Merge pull request #723 from Steveb-p/patch-1

Add missing allow_plain_identifiers option to conf reference

Author: dunglas

core/configuration.md

@@ -24,6 +24,9 @@ api_platform:
     # Specify a path name generator to use.
     path_segment_name_generator: 'api_platform.path_segment_name_generator.underscore'
 
+    # Allow using plain IDs for JSON format
+    allow_plain_identifiers: false
+
     eager_loading:
         # To enable or disable eager loading.
         enabled: true