Fixing "PG::UntranslatableCharacter" error when storing some Pender d…

…ata annotations.

PostgreSQL doesn't support null characters in a JSON column, so these characters need to be removed before storing.

Fixes CV2-3582.

app/models/annotations/dynamic.rb

@@ -98,6 +98,7 @@ def create_field(name, value)
     f.skip_check_ability = true
     f.disable_es_callbacks = self.disable_es_callbacks || value.blank?
     f.field_name = name
+    value.gsub!('\u0000', '') if value.is_a?(String) # Avoid PG::UntranslatableCharacter exception
     f.value = value
     f.annotation_id = self.id
     f

test/models/media_test.rb

@@ -593,4 +593,14 @@ def setup
     l = create_valid_media
     assert_equal '', l.picture
   end
+
+  test "should sanitize link data before storing" do
+    pender_url = CheckConfig.get('pender_url_private') + '/api/medias'
+    url = random_url
+    response = { type: 'media', data: { url: url, type: 'item', title: "Foo \u0000 bar" } }
+    WebMock.stub_request(:get, pender_url).with({ query: { url: url } }).to_return(body: response.to_json)
+    assert_difference 'Link.count' do
+      create_media url: url
+    end
+  end
 end