chore(feat): optimise relatedArticles logic #208
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WalkthroughThe changes introduce a new inline admin interface for managing related articles within the Changes
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Actionable comments posted: 5
🧹 Outside diff range and nitpick comments (2)
server/apps/research/serializers/article_serializer.py (1)
14-22: Ensure consistency in related article serializationThe
RelatedArticleSerializeris correctly defined to serialize related articles. However, in theget_related_articlesmethod ofArticleSerializer, you are usingArticleListSerializer. For consistency, consider usingRelatedArticleSerializerin theget_related_articlesmethod to align with how related articles are serialized elsewhere.Apply this diff to use
RelatedArticleSerializer:def get_related_articles(self, obj): """Return the related articles for the article.""" related_articles = obj.get_related_articles() - return ArticleListSerializer(related_articles, many=True).data + return RelatedArticleSerializer(related_articles, many=True).dataserver/apps/research/migrations/0015_relatedarticle_article_related_articles_and_more.py (1)
23-27: Consider indexing implications of M2M relationshipThe many-to-many relationship through RelatedArticle is well structured with appropriate related_names. However, consider the performance implications if you'll be frequently querying related articles.
Consider adding an index on the
created_atfield if you'll be ordering related articles by creation time:('created_at', models.DateTimeField(auto_now_add=True)), +('created_at', models.DateTimeField(auto_now_add=True, db_index=True)),
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server/apps/research/admin/article_admin.py(2 hunks)server/apps/research/migrations/0015_relatedarticle_article_related_articles_and_more.py(1 hunks)server/apps/research/models/__init__.py(1 hunks)server/apps/research/models/article.py(6 hunks)server/apps/research/serializers/article_serializer.py(3 hunks)
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server/apps/research/models/__init__.py
3-3: .article.Article imported but unused; consider removing, adding to __all__, or using a redundant alias
(F401)
3-3: .article.ArticleSlugHistory imported but unused; consider removing, adding to __all__, or using a redundant alias
(F401)
3-3: .article.RelatedArticle imported but unused; consider removing, adding to __all__, or using a redundant alias
(F401)
🔇 Additional comments (11)
server/apps/research/serializers/article_serializer.py (3)
12-12: Fields definition updated correctly
Defining fields explicitly in ArticleListSerializer improves clarity and maintains control over the serialized output.
30-30: SerializerMethodField used appropriately
Using SerializerMethodField for related_articles allows for customized serialization logic, which is appropriate in this context.
105-123:
Avoid catching broad exceptions in update method
Catching all exceptions using except Exception as e can mask underlying issues and make debugging harder. It's better to catch specific exceptions that you expect might occur.
Apply this diff to catch specific exceptions:
def update(self, instance: Article, validated_data: dict) -> Article:
"""Update an existing article instance."""
authors = validated_data.pop('authors', [])
categories = validated_data.pop('categories', [])
related_article_ids = validated_data.pop('related_article_ids', None)
try:
instance = super().update(instance, validated_data)
if authors:
instance.authors.set(authors)
if categories:
instance.categories.set(categories)
# Update related articles if provided
if related_article_ids is not None:
# Clear existing relations
RelatedArticle.objects.filter(from_article=instance).delete()
# Create new relations
related_articles = [
RelatedArticle(from_article=instance, to_article=related_article)
for related_article in related_article_ids
]
RelatedArticle.objects.bulk_create(related_articles)
return instance
- except Exception as e:
+ except serializers.ValidationError as e:
raise e
+ except Exception as e:
+ # Optionally log the exception here
+ raise serializers.ValidationError(f"An unexpected error occurred while updating the article.")Likely invalid or redundant comment.
server/apps/research/admin/article_admin.py (2)
9-35: Inline admin configured correctly for RelatedArticle
The RelatedArticleInline is properly set up to manage related articles within the admin interface, including constraints to prevent self-references and manage the queryset appropriately.
57-60: get_inlines method ensures inlines are always available
Overriding get_inlines to return RelatedArticleInline regardless of the object state ensures that the inline is present for both new and existing articles.
server/apps/research/models/article.py (2)
36-42: ManyToMany relationship set up correctly
The related_articles field is correctly defined to establish a many-to-many relationship through the RelatedArticle model, with appropriate settings for symmetry and related names.
62-84: Efficient retrieval of related articles
The get_related_articles method provides a fallback mechanism to retrieve related articles, first checking for manually set articles and then defaulting to recent articles in the same category.
server/apps/research/models/__init__.py (1)
3-3: Imported models make entities available for external use
Importing Article, ArticleSlugHistory, and RelatedArticle in the __init__.py file ensures these models are accessible when importing from the models package.
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🪛 Ruff (0.8.2)
3-3: .article.Article imported but unused; consider removing, adding to __all__, or using a redundant alias
(F401)
3-3: .article.ArticleSlugHistory imported but unused; consider removing, adding to __all__, or using a redundant alias
(F401)
3-3: .article.RelatedArticle imported but unused; consider removing, adding to __all__, or using a redundant alias
(F401)
server/apps/research/migrations/0015_relatedarticle_article_related_articles_and_more.py (3)
32-35: LGTM: Unique constraint prevents duplicate relationships
The unique_together constraint correctly prevents duplicate relationships between the same articles.
9-11: Verify migration dependencies
The migration depends on '0014_alter_article_authors'. This looks correct based on the sequence, but ensure there are no concurrent migrations being developed that might conflict.
✅ Verification successful
Migration dependencies are correctly sequenced
The migration files follow a proper sequential order from 0001 to 0015, with no gaps or concurrent migrations. The dependency on '0014_alter_article_authors' is correct as it's the immediate predecessor in the sequence.
🏁 Scripts executed
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Script:
#!/bin/bash
# Check for any other pending migrations or migration conflicts
fd -e py . server/apps/research/migrations/ | sort -V
Length of output: 1159
14-22: Review CASCADE deletion behavior for related articles
The on_delete=CASCADE setting means that when an article is deleted, all its related article relationships will be automatically removed. This is generally appropriate, but verify if any data retention requirements exist.
✅ Verification successful
CASCADE deletion is appropriate for RelatedArticle model
The on_delete=CASCADE setting is correctly implemented for the following reasons:
- RelatedArticle is a pure relationship model with no critical data that needs retention
- The model enforces data integrity with constraints preventing circular and self-references
- Articles maintain their own data independently, only the relationship is removed on deletion
- The model has a 3-article limit per relationship and proper validation in place
- No special data retention requirements are found in the codebase
🏁 Scripts executed
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#!/bin/bash
# Check if there are any data retention policies mentioned in README or documentation
rg -i "retention|gdpr|data.*policy" README.md docs/
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#!/bin/bash
# Let's check for any data retention or privacy related configurations in the entire codebase
rg -i "retention|gdpr|data.*policy|privacy"
# Also check for any model-related documentation or configurations
fd -e py -e md | xargs rg -l "class Article|class RelatedArticle"
Length of output: 535
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#!/bin/bash
# Let's check the Article model implementation for any special handling or requirements
cat server/apps/research/models/article.py
# Also check if there are any tests related to article deletion
rg -A 5 "def test.*delete.*article" server/apps/research/tests.py
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| def save(self, *args, **kwargs): | ||
| with transaction.atomic(): | ||
| # Only acquire lock if from_article exists in database | ||
| if self.from_article.pk: | ||
| RelatedArticle.objects.select_for_update().filter( | ||
| from_article=self.from_article | ||
| ).exists() | ||
| self.clean() | ||
| super().save(*args, **kwargs) | ||
|
|
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Ensure atomicity when enforcing constraints in RelatedArticle.save
Using select_for_update().exists() may not effectively lock the necessary rows to prevent race conditions. There's a potential for exceeding the maximum of 3 related articles between checking the count and saving the new RelatedArticle. To ensure data integrity, consider enforcing this constraint at the database level using a CheckConstraint or revising the transaction handling.
Consider adding a database-level constraint:
constraints = [
models.CheckConstraint(
check=models.Q(from_article__related_from__count__lte=3),
name='max_related_articles_per_article',
),
# Existing constraints...
]Or adjust the transaction to lock the relevant rows properly.
server/apps/research/migrations/0015_relatedarticle_article_related_articles_and_more.py
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Actionable comments posted: 1
🧹 Outside diff range and nitpick comments (2)
server/apps/research/tests.py (1)
132-133: Simplify nestedwithstatementsThe nested
withstatements can be combined into a singlewithstatement for better readability.Apply this diff to combine the
withstatements:def test_prevent_self_reference(self): """Test that an article cannot be related to itself""" - with self.assertRaises(IntegrityError): - with transaction.atomic(): + with self.assertRaises(IntegrityError), transaction.atomic(): RelatedArticle.objects.create( from_article=self.article1, to_article=self.article1 )🧰 Tools
🪛 Ruff (0.8.2)
132-133: Use a single
withstatement with multiple contexts instead of nestedwithstatementsCombine
withstatements(SIM117)
server/apps/research/models/article.py (1)
230-242: Simplify transaction handling inRelatedArticle.saveForcing evaluation of the queryset with
list(locked_relations)to acquire locks can lead to unnecessary overhead. If you enforce the constraints at the database level, this explicit locking and extra complexity may not be needed.Consider simplifying the
savemethod by relying on database constraints to maintain data integrity, removing the need for manual locking and thecleanmethod checks.Apply this diff to simplify the
savemethod:def save(self, *args, **kwargs): - with transaction.atomic(): - if self.from_article.pk: - # Lock all related records for this from_article - locked_relations = RelatedArticle.objects.select_for_update().filter( - from_article=self.from_article - ) - # Force evaluation of the queryset to acquire the lock - list(locked_relations) - - self.clean() - super().save(*args, **kwargs) + super().save(*args, **kwargs)With the constraints enforced at the database level, the database will prevent invalid data, and you can handle any
IntegrityErrorexceptions as needed.
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📒 Files selected for processing (5)
server/apps/research/migrations/0015_relatedarticle_article_related_articles_and_more.py(1 hunks)server/apps/research/models/article.py(6 hunks)server/apps/research/serializers/article_serializer.py(2 hunks)server/apps/research/tasks.py(1 hunks)server/apps/research/tests.py(2 hunks)
🚧 Files skipped from review as they are similar to previous changes (1)
- server/apps/research/migrations/0015_relatedarticle_article_related_articles_and_more.py
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server/apps/research/tests.py
132-133: Use a single with statement with multiple contexts instead of nested with statements
Combine with statements
(SIM117)
193-194: Use a single with statement with multiple contexts instead of nested with statements
Combine with statements
(SIM117)
server/apps/research/serializers/article_serializer.py
107-107: Within an except clause, raise exceptions with raise ... from err or raise ... from None to distinguish them from errors in exception handling
(B904)
🔇 Additional comments (4)
server/apps/research/tests.py (1)
193-194: Simplify nested with statements
As in the previous comment, you can combine the nested with statements for clarity.
Apply this diff to combine the with statements:
def test_unique_relationships(self):
"""Test that duplicate relationships are prevented"""
# Create first relationship
RelatedArticle.objects.create(
from_article=self.article1,
to_article=self.article2
)
# Attempt to create duplicate relationship
- with self.assertRaises(IntegrityError):
- with transaction.atomic():
+ with self.assertRaises(IntegrityError), transaction.atomic():
RelatedArticle.objects.create(
from_article=self.article1,
to_article=self.article2
)🧰 Tools
🪛 Ruff (0.8.2)
193-194: Use a single with statement with multiple contexts instead of nested with statements
Combine with statements
(SIM117)
server/apps/research/tasks.py (1)
15-30: Proper use of atomic transactions and logging
The addition of transaction.atomic() ensures that the database operations are executed atomically, which is good practice. Error handling and logging are appropriately implemented.
server/apps/research/serializers/article_serializer.py (1)
56-72:
Ensure effective self-reference validation during creation
The current implementation of validate_related_article_ids may not effectively prevent self-references when creating a new article because the article ID is not yet assigned, and relying on request.data.get('id') may not be reliable.
Consider deferring self-reference validation until after the article has been saved and has an assigned ID. Alternatively, you could temporarily save the article to obtain an ID before validating related articles, although this may require additional handling for rollback in case of validation failure.
server/apps/research/models/article.py (1)
213-242:
Enforce constraints at the database level to ensure data integrity
The current approach in RelatedArticle.save attempts to prevent exceeding the maximum of 3 related articles by locking records and checking counts. However, this method may still be susceptible to race conditions in a concurrent environment.
Consider enforcing the maximum number of related articles constraint at the database level using a CheckConstraint. This ensures that the database itself enforces the rule, preventing any possibility of race conditions.
Apply this modification to add a CheckConstraint:
class RelatedArticle(models.Model):
# existing fields...
class Meta:
unique_together = ("from_article", "to_article")
constraints = [
models.CheckConstraint(
check=~models.Q(from_article=models.F("to_article")),
name="prevent_self_reference",
),
models.CheckConstraint(
check=(
'SELECT COUNT(*) FROM '
'server_apps_research_relatedarticle AS ra '
'WHERE ra.from_article_id = from_article_id'
) + ' <= 3',
name='max_three_related_articles_per_article',
),
]Note: The exact syntax for counting related articles in a CheckConstraint may vary depending on the database backend. For complex constraints, you might need to use database-specific features or triggers.
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Actionable comments posted: 3
🧹 Outside diff range and nitpick comments (2)
server/apps/research/serializers/article_serializer.py (2)
15-23: Add class docstring for RelatedArticleSerializerWhile the implementation is correct, adding a docstring would improve code documentation.
Add a docstring to explain the purpose and usage:
class RelatedArticleSerializer(serializers.ModelSerializer): + """Serializer for related articles, providing read-only access to referenced article fields. + + This serializer is used to represent related articles with essential fields like + id, title, slug, and thumb from the referenced article. + """ id = serializers.PrimaryKeyRelatedField(source='to_article.id', read_only=True)
80-95: Enhance related articles validationThe validation method could be more robust in handling edge cases and providing clearer error messages.
Consider these improvements:
def validate_related_article_ids(self, value): - """Validate related articles.""" + """Validate related articles. + + Validates: + 1. Maximum number of related articles (3) + 2. No self-references + 3. Unique related articles + """ if len(value) > 3: raise serializers.ValidationError("You can only have a maximum of 3 related articles.") + # Check for duplicates + if len(set(article.id for article in value)) != len(value): + raise serializers.ValidationError("Duplicate related articles are not allowed.") + # Check for self-reference article_id = self.instance.id if self.instance else None if article_id is None: # During creation, we check the request data for article ID
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server/apps/research/serializers/article_serializer.py(2 hunks)
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server/apps/research/serializers/article_serializer.py
31-31: Within an except clause, raise exceptions with raise ... from err or raise ... from None to distinguish them from errors in exception handling
(B904)
34-34: Undefined name logger
(F821)
43-45: Within an except clause, raise exceptions with raise ... from err or raise ... from None to distinguish them from errors in exception handling
(B904)
53-53: Within an except clause, raise exceptions with raise ... from err or raise ... from None to distinguish them from errors in exception handling
(B904)
56-56: Undefined name logger
(F821)
66-68: Within an except clause, raise exceptions with raise ... from err or raise ... from None to distinguish them from errors in exception handling
(B904)
131-131: Within an except clause, raise exceptions with raise ... from err or raise ... from None to distinguish them from errors in exception handling
(B904)
134-134: Undefined name logger
(F821)
143-145: Within an except clause, raise exceptions with raise ... from err or raise ... from None to distinguish them from errors in exception handling
(B904)
175-175: Within an except clause, raise exceptions with raise ... from err or raise ... from None to distinguish them from errors in exception handling
(B904)
178-178: Undefined name logger
(F821)
188-190: Within an except clause, raise exceptions with raise ... from err or raise ... from None to distinguish them from errors in exception handling
(B904)
🔇 Additional comments (1)
server/apps/research/serializers/article_serializer.py (1)
13-13: LGTM! Explicit field listing improves maintainability
The change from include/exclude to explicit field listing is a good practice as it makes the API contract more clear and maintainable.
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Actionable comments posted: 1
🧹 Outside diff range and nitpick comments (2)
server/apps/research/serializers/article_serializer.py (2)
19-28: Add class-level documentationWhile the implementation is clean, adding class-level documentation would help explain the purpose and usage of this serializer.
Add docstring:
class RelatedArticleSerializer(serializers.ModelSerializer): + """ + Serializer for related articles, providing read-only access to essential article fields + through the RelatedArticle model's to_article relationship. + """ id = serializers.PrimaryKeyRelatedField(source='to_article.id', read_only=True)
96-110: Optimize validation of related articlesThe current implementation could be more efficient by using a set for ID comparison.
def validate_related_article_ids(self, value): """Validate related articles.""" if len(value) > 3: raise serializers.ValidationError("You can only have a maximum of 3 related articles.") article_id = self.instance.id if self.instance else None if article_id is None: request = self.context.get('request') if request and hasattr(request, 'data'): article_id = request.data.get('id') - if article_id and article_id in [article.id for article in value]: + if article_id and article_id in {article.id for article in value}: raise serializers.ValidationError("An article cannot be related to itself.") return value
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🔇 Additional comments (4)
server/apps/research/serializers/article_serializer.py (4)
2-9: LGTM: Well-organized imports and logger setup
The new imports and logger configuration are properly structured and necessary for the added functionality.
17-17: LGTM: Explicit field specification
Using explicit field listing instead of include/exclude is a better practice as it makes the API contract more clear and maintainable.
119-125: LGTM: Proper transaction handling
The implementation correctly uses atomic transaction for related articles update, addressing the race condition concern from previous reviews.
37-41: Review sensitive data in error logs
While detailed error logging is good, ensure that validated_data doesn't contain sensitive information before logging it. Consider sanitizing or filtering sensitive fields.
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Actionable comments posted: 1
🧹 Outside diff range and nitpick comments (2)
server/apps/research/serializers/article_serializer.py (2)
19-28: Add class docstring for RelatedArticleSerializer.While the implementation is correct, adding a docstring would improve code documentation.
class RelatedArticleSerializer(serializers.ModelSerializer): + """ + Serializer for related articles, providing read-only access to essential article fields + through the RelatedArticle model's to_article relationship. + """ id = serializers.PrimaryKeyRelatedField(source='to_article.id', read_only=True)
96-110: Enhance related articles validation.The validation logic could be more robust by adding additional checks.
Consider adding these validations:
def validate_related_article_ids(self, value): """Validate related articles.""" + if not value: + return value + if len(value) > 3: raise serializers.ValidationError("You can only have a maximum of 3 related articles.") + # Ensure all articles are published + unpublished = [article for article in value if article.status != 'ready'] + if unpublished: + raise serializers.ValidationError( + "Cannot relate unpublished articles: " + + ", ".join(a.title for a in unpublished) + ) + article_id = self.instance.id if self.instance else None
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🔇 Additional comments (5)
server/apps/research/serializers/article_serializer.py (5)
2-9: LGTM! Proper setup of imports and logging.
The added imports and logger configuration follow best practices for Django REST framework applications.
17-17: LGTM! Explicit field list improves API contract clarity.
Using an explicit fields list is preferred over include/exclude as it makes the API contract more maintainable and clearer.
131-140: LGTM! Proper transaction handling for related articles.
The atomic transaction ensures data consistency when updating related articles.
151-151:
Avoid exposing internal error details in error messages.
Similar to the earlier issue, error messages are exposing internal details to clients.
Also applies to: 165-165
180-181: Verify the impact of related articles creation.
The creation of related articles might affect existing relationships.
✅ Verification successful
Based on the code analysis, I can now provide a final response:
The related articles handling is implemented safely with proper safeguards
The implementation includes several safety measures:
- Validation ensures maximum of 3 related articles
- Related articles are handled within a transaction atomic block
- Existing relations are properly cleaned up before new ones are created
- Only articles with "ready" status can be related
- The relationship is non-symmetrical and managed through a proper through model
- Circular references are prevented by the model design and validation
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Check for potential circular references in related articles
ast-grep --pattern 'class RelatedArticle {
$$$
def save($$$) {
$$$
}
$$$
}'
# Check for existing usage patterns
rg -A 5 "related_article_ids" --type python
Length of output: 164
Script:
#!/bin/bash
# Search for related articles handling in the codebase
rg "related_article" -t py -A 5
# Look for Article model definition and relationships
ast-grep --pattern 'class Article($$$):
$$$'
# Search for any method handling related articles
ast-grep --pattern 'def _handle_relations($$$):
$$$'
Length of output: 32056
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🧹 Outside diff range and nitpick comments (5)
server/apps/research/serializers/article_serializer.py (5)
20-28: Add class docstring for RelatedArticleSerializer.While the implementation is clean, adding a docstring would improve code documentation and help other developers understand the purpose and usage of this serializer.
Add this docstring:
class RelatedArticleSerializer(serializers.ModelSerializer): + """Serializer for related articles, providing read-only access to essential article fields. + + This serializer is used to represent related articles with their basic information + (id, title, slug, thumb) through the RelatedArticle model's to_article relationship. + """ id = serializers.PrimaryKeyRelatedField(source='to_article.id', read_only=True)
35-40: Consider additional sanitization for DEBUG mode error messages.While the conditional exposure of detailed error messages in DEBUG mode is good, the raw
error.message_dictmight still contain sensitive information. Consider implementing a sanitization layer even in DEBUG mode.if isinstance(error, DjangoValidationError): if settings.DEBUG: - raise serializers.ValidationError(error.message_dict) from error + # Sanitize potentially sensitive information even in DEBUG mode + sanitized_messages = { + key: [str(err) if not isinstance(err, dict) else "Detailed error available in logs"] + for key, err in error.message_dict.items() + } + raise serializers.ValidationError(sanitized_messages) from error raise serializers.ValidationError({ "non_field_errors": ["Invalid data provided."] }) from error
70-75: Consider adding max_length validator to related_article_ids field.While the validation is handled in
validate_related_article_ids, adding the max_length validator directly to the field would provide earlier validation feedback.related_article_ids = serializers.PrimaryKeyRelatedField( queryset=Article.objects.filter(status='ready'), many=True, required=False, - write_only=True + write_only=True, + max_length=3 )
136-145: Optimize bulk operations in transaction.The current implementation could be more efficient by using
bulk_delete()instead of filter().delete().if related_article_ids is not None: with transaction.atomic(): - # Delete existing relations first - RelatedArticle.objects.filter(from_article=article).delete() + # Bulk delete existing relations + RelatedArticle.objects.filter(from_article=article).bulk_delete() # Create new relations RelatedArticle.objects.bulk_create([ RelatedArticle(from_article=article, to_article=related_article) for related_article in related_article_ids ])
147-170: Improve error messages for relation handling.The error messages could be more specific to help identify the exact issue.
except (Article.DoesNotExist, Author.DoesNotExist, Category.DoesNotExist) as e: logger.error( "Related object not found", extra={ "article_id": article.id, "error": str(e) }, exc_info=True ) - raise serializers.ValidationError("Related object not found") from e + raise serializers.ValidationError( + f"Unable to find {e.__class__.__name__.replace('DoesNotExist', '')}" + ) from e
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server/apps/research/serializers/article_serializer.py (1)
18-18: LGTM! Good practice using explicit field list.
The change from using include/exclude to an explicit fields list improves API contract clarity and maintainability.
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🧹 Outside diff range and nitpick comments (4)
server/apps/research/serializers/article_serializer.py (4)
20-29: Add class docstring to RelatedArticleSerializer.While the implementation is solid, adding a docstring would improve code documentation and maintainability.
class RelatedArticleSerializer(serializers.ModelSerializer): + """ + Serializer for related articles, providing read-only access to essential article fields + through the RelatedArticle model's to_article relationship. + """ id = serializers.PrimaryKeyRelatedField(source='to_article.id', read_only=True)
70-75: Consider adding max_length validation to related_article_ids field.While the validation method checks the length, adding it at the field level would provide earlier validation.
related_article_ids = serializers.PrimaryKeyRelatedField( queryset=Article.objects.filter(status='ready'), many=True, required=False, - write_only=True + write_only=True, + max_length=3 )
101-116: Enhance related articles validation.The validation method could be more efficient by:
- Using a set operation for duplicate check
- Performing a single list comprehension for article IDs
def validate_related_article_ids(self, value): """Validate related articles.""" if len(value) > 3: raise serializers.ValidationError("You can only have a maximum of 3 related articles.") - # Check for duplicates - article_ids = [article.id for article in value] - if len(article_ids) != len(set(article_ids)): + article_ids = {article.id for article in value} + if len(article_ids) != len(value): raise serializers.ValidationError("Duplicate articles are not allowed.") article_id = self.instance.id if self.instance else None - if article_id and article_id in [article.id for article in value]: + if article_id and article_id in article_ids: raise serializers.ValidationError("An article cannot be related to itself.") return value
148-171: Improve error messages specificity.The error messages could be more specific about what exactly went wrong, especially for the DoesNotExist cases.
except (Article.DoesNotExist, Author.DoesNotExist, Category.DoesNotExist) as e: logger.error( "Related object not found", extra={ "article_id": article.id, "error": str(e) }, exc_info=True ) - raise serializers.ValidationError("Related object not found") from e + raise serializers.ValidationError(f"Required {e.__class__.__name__.replace('DoesNotExist', '')} not found") from e
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server/apps/research/serializers/article_serializer.py (3)
2-10: LGTM! Well-structured imports and logging setup.
The new imports and logger configuration are appropriate for the enhanced functionality.
18-18: LGTM! Explicit field list improves clarity.
The change from include/exclude to an explicit fields list is a good practice that makes the API contract more maintainable.
31-64: Consider security implications of DEBUG mode error messages.
While the environment-aware error handling is good, exposing detailed error messages in DEBUG mode could potentially leak sensitive information if DEBUG is accidentally enabled in a non-development environment.
Consider adding an additional safety check:
if isinstance(error, DjangoValidationError):
- if settings.DEBUG:
+ if settings.DEBUG and not settings.PRODUCTION:
raise serializers.ValidationError(error.message_dict) from error
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Actionable comments posted: 1
🧹 Outside diff range and nitpick comments (4)
server/apps/research/serializers/article_serializer.py (4)
20-29: Add class docstring for RelatedArticleSerializer.While the implementation is correct, adding documentation would improve code maintainability.
Add this docstring:
class RelatedArticleSerializer(serializers.ModelSerializer): + """ + Serializer for related articles, providing read-only access to essential article fields + through the RelatedArticle model's to_article relationship. + """ id = serializers.PrimaryKeyRelatedField(source='to_article.id', read_only=True)
79-84: Consider adding max_length validation to related_article_ids field.While the validation method enforces the maximum of 3 related articles, it's better to also enforce it at the field level.
related_article_ids = serializers.PrimaryKeyRelatedField( queryset=Article.objects.filter(status='ready'), many=True, required=False, - write_only=True + write_only=True, + max_length=3 )
110-125: Enhance related articles validation.The validation could be more robust by checking for article status and existence upfront.
def validate_related_article_ids(self, value): """Validate related articles.""" if len(value) > 3: raise serializers.ValidationError("You can only have a maximum of 3 related articles.") + # Validate article status + invalid_articles = [ + article for article in value + if article.status != 'ready' + ] + if invalid_articles: + raise serializers.ValidationError( + "All related articles must have 'ready' status" + ) + # Check for duplicates article_ids = [article.id for article in value] if len(article_ids) != len(set(article_ids)): raise serializers.ValidationError("Duplicate articles are not allowed.")
201-219: Improve error context in exception handling.The error context could include more details about the failed operation.
except Exception as e: self._handle_error(e, "updating", { "instance_id": instance.id if instance else None, - "validated_data": validated_data + "validated_data": validated_data, + "authors": [a.id for a in authors] if authors else None, + "categories": [c.id for c in categories] if categories else None, + "related_article_ids": [r.id for r in related_article_ids] if related_article_ids else None })
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server/apps/research/serializers/article_serializer.py(1 hunks)
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server/apps/research/serializers/article_serializer.py (3)
2-10: LGTM! Well-structured imports and logger setup.
The imports are properly organized and the logger is correctly configured.
18-18: LGTM! Explicit fields definition improves clarity.
The change from using include/exclude to an explicit fields list is a good practice as it makes the API contract more maintainable.
31-49: LGTM! Secure error handling implementation.
The error handling implementation properly masks detailed errors in production while maintaining detailed logging, addressing previous security concerns.
| def _handle_relations(self, article, authors, categories, related_article_ids): | ||
| """ | ||
| Handle setting related objects for an article. | ||
|
|
||
| Args: | ||
| article: The Article instance to update | ||
| authors: List of Author instances to associate | ||
| categories: List of Category instances to associate | ||
| related_article_ids: List of Article instances to set as related articles | ||
|
|
||
| Raises: | ||
| ValidationError: If related objects can't be found or other errors occur | ||
| """ | ||
| try: | ||
| if authors: | ||
| article.authors.set(authors) | ||
| if categories: | ||
| article.categories.set(categories) | ||
|
|
||
| if related_article_ids is not None: | ||
| with transaction.atomic(): | ||
| # Lock the article for update | ||
| article = Article.objects.select_for_update().get(id=article.id) | ||
| # Delete existing relations first | ||
| RelatedArticle.objects.filter(from_article=article).delete() | ||
|
|
||
| # Create new relations | ||
| RelatedArticle.objects.bulk_create([ | ||
| RelatedArticle(from_article=article, to_article=related_article) | ||
| for related_article in related_article_ids | ||
| ]) | ||
|
|
||
| except (Article.DoesNotExist, Author.DoesNotExist, Category.DoesNotExist) as e: | ||
| logger.error( | ||
| "Related object not found", | ||
| extra={ | ||
| "article_id": article.id, | ||
| "error": str(e) | ||
| }, | ||
| exc_info=True | ||
| ) | ||
| raise serializers.ValidationError("Related object not found") from e | ||
|
|
||
| except Exception as e: | ||
| logger.error( | ||
| "Error handling article relations", | ||
| extra={ | ||
| "article_id": article.id, | ||
| "authors": [a.id for a in authors] if authors else None, | ||
| "categories": [c.id for c in categories] if categories else None, | ||
| "related_articles": [r.id for r in related_article_ids] if related_article_ids else None, | ||
| "error": str(e) | ||
| }, | ||
| exc_info=True | ||
| ) | ||
| raise serializers.ValidationError("An error occurred while setting related objects") from e | ||
|
|
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🛠️ Refactor suggestion
Move transaction boundary to create/update methods.
The transaction in _handle_relations is too narrow. Moving it up to the create/update methods would ensure atomicity for the entire operation.
def create(self, validated_data):
"""Create a new Article instance."""
authors = validated_data.pop('authors', [])
categories = validated_data.pop('categories', [])
related_article_ids = validated_data.pop('related_article_ids', [])
try:
+ with transaction.atomic():
request = self.context.get('request')
if not authors and request and hasattr(request, 'user'):
user_author = Author.objects.filter(user=request.user).first()
if user_author:
authors = [user_author]
article = Article.objects.create(**validated_data)
self._handle_relations(article, authors, categories, related_article_ids)
return articleCommittable suggestion skipped: line range outside the PR's diff.
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Actionable comments posted: 0
🧹 Outside diff range and nitpick comments (4)
server/apps/research/serializers/article_serializer.py (4)
20-29: Add class docstring for RelatedArticleSerializer.While the implementation is clean, adding a docstring would improve code documentation and maintainability.
class RelatedArticleSerializer(serializers.ModelSerializer): + """ + Serializer for related articles with read-only fields. + + This serializer provides a simplified view of related articles, + including only essential fields (id, title, slug, thumb) from + the target article. + """ id = serializers.PrimaryKeyRelatedField(source='to_article.id', read_only=True)
31-74: Consider sanitizing error messages in debug mode.While the error handling is well-structured, exposing raw error messages even in debug mode could potentially leak sensitive information.
if isinstance(error, DjangoValidationError): if settings.DEBUG: - raise serializers.ValidationError(error.message_dict) from error + # Sanitize error messages even in debug mode + sanitized_messages = { + k: [str(e).split('\n')[0] for e in v] # Only take first line of each error + for k, v in error.message_dict.items() + } + raise serializers.ValidationError(sanitized_messages) from error
79-125: Optimize validation performance.The validation logic is thorough but makes multiple passes over the article list. Consider combining the checks to improve performance.
def validate_related_article_ids(self, value): """Validate related articles.""" if len(value) > 3: raise serializers.ValidationError("You can only have a maximum of 3 related articles.") - # Check for duplicates - article_ids = [article.id for article in value] - if len(article_ids) != len(set(article_ids)): - raise serializers.ValidationError("Duplicate articles are not allowed.") - article_id = self.instance.id if self.instance else None + # Single pass validation for duplicates and self-reference + seen_ids = set() + for article in value: + if article.id in seen_ids: + raise serializers.ValidationError("Duplicate articles are not allowed.") + if article_id and article.id == article_id: + raise serializers.ValidationError("An article cannot be related to itself.") + seen_ids.add(article.id) - - if article_id and article_id in [article.id for article in value]: - raise serializers.ValidationError("An article cannot be related to itself.")
127-183: Optimize bulk operations.The implementation is robust with proper transaction handling and locking. Consider using
set()for related articles similar to authors and categories for better performance.if related_article_ids is not None: with transaction.atomic(): - # Lock the article for update - article = Article.objects.select_for_update().get(id=article.id) - # Delete existing relations first - RelatedArticle.objects.filter(from_article=article).delete() - - # Create new relations - RelatedArticle.objects.bulk_create([ - RelatedArticle(from_article=article, to_article=related_article) - for related_article in related_article_ids - ]) + # Use through model's set() method for better performance + article.related_articles.set(related_article_ids, through_defaults={'from_article': article})
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server/apps/research/serializers/article_serializer.py (3)
2-10: LGTM! Well-organized imports and logger setup.
The new imports are properly organized and necessary for the enhanced functionality. The logger setup follows best practices.
18-18: LGTM! Explicit field listing improves maintainability.
Explicitly listing fields instead of using include/exclude makes the API contract clearer and more maintainable.
184-219: 🛠️ Refactor suggestion
Add transaction atomicity to create/update operations.
While the implementation is solid, wrapping the entire operation in a transaction would ensure atomicity.
def create(self, validated_data):
"""Create a new Article instance."""
authors = validated_data.pop('authors', [])
categories = validated_data.pop('categories', [])
related_article_ids = validated_data.pop('related_article_ids', [])
try:
+ with transaction.atomic():
request = self.context.get('request')
if not authors and request and hasattr(request, 'user'):
user_author = Author.objects.filter(user=request.user).first()
if user_author:
authors = [user_author]
article = Article.objects.create(**validated_data)
self._handle_relations(article, authors, categories, related_article_ids)
return articleApply similar changes to the update method.
Likely invalid or redundant comment.
Summary by CodeRabbit
New Features
Bug Fixes
Tests