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Automatically build missing values for valid fields.
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Allow update value for fields that do not have inserted record in
appropriate value table.
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@CrAsH1101
CrAsH1101 committed Jan 20, 2022
1 parent 49830c8 commit 8317cd1
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86 changes: 83 additions & 3 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -23,13 +23,29 @@ now set value
```ruby
user = User.create
user.build_dynabute_value( name: 'age', value: 35 ).save
# => <Dynabute::Values::IntegerValue:0x007faba5279540 id: 1, field_id: 1, dynabutable_id: 1, dynabutable_type: "User", value: 35>
user.set_dynabute_value( name: 'age', value: 40 )
# => #<Dynabute::Values::StringValue:0x0000 ... dynabutable_type: "User", value: 40>
user.set_dynabute_value( name: 'skinny', value: true )
# => #<Dynabute::Values::StringValue:0x0000 ... dynabutable_type: "User", value: true>
user.save
# => true
# or update single value
user.set_dynabute_value( name: 'age', value: 35 ).save
# => true
```

check the value
```ruby
user.dynabute_value( name: 'age' ).value
user.get_dynabute_value(name: 'age')
# => 35
```

or check entire value object
```ruby
value_obj = user.dynabute_value( name: 'age' )
# => #<Dynabute::Values::StringValue:0x0000 ... dynabutable_type: "User", value: 35>
value_obj.value
# => 35
```

Expand All @@ -39,6 +55,59 @@ user.dynabute_age_value.value
# => 35
```

set values for fields which can contain more then one value
```ruby
user = User.create
user.set_dynabute_value( name: 'personalities', value: 'good' )
# => #<Dynabute::Values::StringValue:0x0000 ... dynabutable_type: "User", value: "good">
user.set_dynabute_value( name: 'personalities', value: 'bad' )
# => #<Dynabute::Values::StringValue:0x0000 ... dynabutable_type: "User", value: "bad">
user.set_dynabute_value( name: 'personalities', value: 'ugly' )
# => #<Dynabute::Values::StringValue:0x0000 ... dynabutable_type: "User", value: "ugly">
user.save
# => true
```

get values for fields which can contain more then one value
```ruby
user = User.first
user.get_dynabute_value( name: 'personalities' )
# => ["good", "bad", "ugly"]
user.dynabute_value( name: 'personalities' )
# => [#<Dynabute::Values::StringValue:0x0000 ... dynabutable_type: "User", value: "good">,
# #<Dynabute::Values::StringValue:0x0000 ... dynabutable_type: "User", value: "bad">,
# #<Dynabute::Values::StringValue:0x0000 ... dynabutable_type: "User", value: "ugly">]
```

update specific value for field with `has_many` option
```ruby
user = User.first
values_obj = user.dynabute_value( name: 'personalities' )
# => [#<Dynabute::Values::StringValue:0x0000 ... dynabutable_type: "User", value: "good">,
# #<Dynabute::Values::StringValue:0x0000 ... dynabutable_type: "User", value: "bad">,
# #<Dynabute::Values::StringValue:0x0000 ... dynabutable_type: "User", value: "ugly">]
good_value_obj = values_obj.first
# => #<Dynabute::Values::StringValue:0x0000 ... dynabutable_type: "User", value: "good">
bad_value_obj = values_obj.last
# => #<Dynabute::Values::StringValue:0x0000 ... dynabutable_type: "User", value: "ugly">
user.set_dynabute_value( name: 'personalities', value: 'very ugly', value_id: good_value_obj.id )
# => #<Dynabute::Values::StringValue:0x0000 ... dynabutable_type: "User", value: "very good">
user.set_dynabute_value( name: 'personalities', value: 'very ugly', value_id: bad_value_obj.id )
# => #<Dynabute::Values::StringValue:0x0000 ... dynabutable_type: "User", value: "very ugly">
user.save
# => true
# in case all changes are not required to be saved within db transaction,
# each value can be saved separately.
good_value_obj.value = 'very very good'
# => "very very good"
good_value_obj.save
```

nested attributes of glory
```ruby
personality_field_id = User.dynabutes.find_by( name: 'personalities' ).id
Expand Down Expand Up @@ -102,6 +171,17 @@ $ rake db:migrate
```
## Contributing
#### Rspec: set test environment
```bash
$ bundle install
$ cd spec/dummy/
$ RAILS_ENV=test bundle exec rake db:create
$ RAILS_ENV=test bundle exec rake db:migrate
$ cd ../../
$ bundle exec rspec
```
yea?
## License
Expand Down
80 changes: 69 additions & 11 deletions lib/dynabute/dynabutable.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@

module Dynabute
module Dynabutable
class ValueNotFound < StandardError; end
extend ActiveSupport::Concern

included do
Expand Down Expand Up @@ -36,18 +37,72 @@ def dynabute_values
end

def dynabute_value(name: nil, field_id: nil, field: nil)
field = find_field(name, field_id, field)

if field.has_many
send(Util.value_relation_name(field.value_type)).select{|v| v.field_id == field.id }
field_obj = find_field(name, field_id, field)
field_values = send(Util.value_relation_name(field_obj.value_type))
field_value = if field_obj.has_many
field_values.select{ |v| v.field_id == field_obj.id }
else
send(Util.value_relation_name(field.value_type)).detect{|v| v.field_id == field.id }
field_values.detect{ |v| v.field_id == field_obj.id }
end
field_value
end

def build_dynabute_value(name: nil, field_id: nil, field: nil, **rest)
field = find_field(name, field_id, field)
send(Util.value_relation_name(field.value_type)).build(field_id: field.id, **rest)
field_obj = find_field(name, field_id, field)
send(Util.value_relation_name(field_obj.value_type)).build(field_id: field_obj.id, **rest)
end

# Returns value attribute for specified field.
# If field can have multiple values for single target model object,
# an array of values is returned, unless specific value_id is provided.
def get_dynabute_value(name: nil, field_id: nil, field: nil, value_id: nil)
field_obj = find_field(name, field_id, field)
value_obj = dynabute_value(field: field_obj)
return unless value_obj
if field_obj.has_many && value_id
value_obj = value_obj.detect{|v| v.id == value_id}
end
value_obj.is_a?(Array) ? value_obj.map(&:value) : value_obj.value
end

# Sets the value in the target model object nested attribute structure.
# If field can have multiple values for single target model object,
# a new value will be added, unless specific value_id os provided.
#
# This method does not store changes in the database. "save" method should
# be called on target model to store all changes, or individually on every
# value record returned by this method.
def set_dynabute_value(name: nil, field_id: nil, field: nil, value: nil, value_id: nil)
field_obj = find_field(name, field_id, field)
value_obj = dynabute_value(field: field_obj)
if field_obj.has_many
if value_id
value_obj = value_obj.detect{|v| v.id == value_id} if value_obj
fail ValueNotFound unless value_obj
else
value_obj = build_dynabute_value(field: field_obj)
end
else
value_obj ||= build_dynabute_value(field: field_obj)
end
value_obj.value = value
value_obj
end

# Removes value from database and keeps dynabute relations up-to-date.
# If field can have multiple values for single target model object,
# all values will be removed, unless specific value_id os provided.
#
# This method stores changes in the database
def remove_dynabute_value(name: nil, field_id: nil, field: nil, value_id: nil)
field_obj = find_field(name, field_id, field)
value_obj = dynabute_value(field: field_obj)
if value_obj && field_obj.has_many && value_id
value_obj = value_obj.detect{|v| v.id == value_id}
end
if value_obj
send(Util.value_relation_name(field_obj.value_type)).destroy(value_obj)
end
end

def method_missing(*args)
Expand All @@ -64,10 +119,13 @@ def method_missing(*args)

private
def find_field(name, id, field)
name_or_id = {name: name, id: id}.compact
return nil if name_or_id.blank? && field.blank?
field_obj = field || Dynabute::Field.find_by(name_or_id.merge(target_model: self.class.to_s))
fail Dynabute::FieldNotFound.new(name_or_id, field) if field_obj.nil?
field_obj = field
if field_obj.blank?
name_or_id = {name: name, id: id}.compact
return nil if name_or_id.blank?
field_obj = Dynabute::Field.find_by(name_or_id.merge(target_model: self.class.to_s))
fail Dynabute::FieldNotFound.new(name_or_id, field) if field_obj.nil?
end
field_obj
end

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