Add render_api and rename get_field_config to field_config_for.

lib/rest_framework/filters/model_query_filter.rb

@@ -22,7 +22,7 @@ def _get_filter_params
         field, sub_field = match[1..2]
         next false unless field.in?(fields)
 
-        sub_fields = @controller.class.get_field_config(field)[:sub_fields] || []
+        sub_fields = @controller.class.field_config_for(field)[:sub_fields] || []
         if sub_field.in?(sub_fields)
           includes << field.to_sym
           next true

lib/rest_framework/mixins/base_controller_mixin.rb

@@ -341,7 +341,9 @@ def api_response(payload, **kwargs)
     end
   end
 
-  # Provide a generic `OPTIONS` response with metadata such as available actions.
+  # TODO: Might make this the default render method in the future.
+  alias_method :render_api, :api_response
+
   def options
     return api_response(self.options_metadata)
   end

lib/rest_framework/mixins/model_controller_mixin.rb

@@ -117,10 +117,10 @@ def get_fields(input_fields: nil)
     end
 
     # Get a field's config, including defaults.
-    def get_field_config(f)
+    def field_config_for(f)
       f = f.to_sym
-      @_get_field_config ||= {}
-      return @_get_field_config[f] if @_get_field_config[f]
+      @_field_config_for ||= {}
+      return @_field_config_for[f] if @_field_config_for[f]
 
       config = self.field_config&.dig(f) || {}
 
@@ -147,7 +147,7 @@ def get_field_config(f)
         }.to_h.compact.presence
       end
 
-      return @_get_field_config[f] = config.compact
+      return @_field_config_for[f] = config.compact
     end
 
     # Get metadata about the resource's fields.
@@ -305,7 +305,7 @@ def fields_metadata
         end
 
         # Serialize any field config.
-        metadata[:config] = self.get_field_config(f).presence
+        metadata[:config] = self.field_config_for(f).presence
 
         next [f, metadata.compact]
       }.to_h
@@ -450,7 +450,7 @@ def get_allowed_parameters
 
       if self.permit_nested_attributes_assignment
         hash_variations["#{f}_attributes"] = (
-          self.class.get_field_config(f)[:sub_fields] + ["_destroy"]
+          self.class.field_config_for(f)[:sub_fields] + ["_destroy"]
         )
       end
 

lib/rest_framework/serializers/native_serializer.rb

@@ -195,7 +195,7 @@ def _get_controller_serializer_config(fields)
     attachment_reflections = @model.attachment_reflections
 
     fields.each do |f|
-      field_config = @controller.class.get_field_config(f)
+      field_config = @controller.class.field_config_for(f)
       next if field_config[:write_only]
 
       if f.in?(column_names)