provide fields parameter from request to operation and from operation to resource_klass.find or resource_klass.find_by_key (when fetching data)

Author: senid231

lib/jsonapi/operation.rb

@@ -14,14 +14,15 @@ def apply
   end
 
   class FindOperation < Operation
-    attr_reader :filters, :include_directives, :sort_criteria, :paginator
+    attr_reader :filters, :include_directives, :sort_criteria, :paginator, :fields
 
     def initialize(resource_klass, options = {})
       super(resource_klass, options)
       @filters = options[:filters]
       @include_directives = options[:include_directives]
       @sort_criteria = options.fetch(:sort_criteria, [])
       @paginator = options[:paginator]
+      @fields = options[:fields]
       @transactional = false
     end
 
@@ -52,7 +53,8 @@ def apply
                                               context: @context,
                                               include_directives: @include_directives,
                                               sort_criteria: @sort_criteria,
-                                              paginator: @paginator)
+                                              paginator: @paginator,
+                                              fields: @fields)
 
       options = {}
       if JSONAPI.configuration.top_level_links_include_pagination
@@ -77,12 +79,13 @@ def apply
   end
 
   class ShowOperation < Operation
-    attr_reader :id, :include_directives
+    attr_reader :id, :include_directives, :fields
 
     def initialize(resource_klass, options = {})
       super(resource_klass, options)
       @id = options.fetch(:id)
       @include_directives = options[:include_directives]
+      @fields = options[:fields]
       @transactional = false
     end
 
@@ -91,7 +94,8 @@ def apply
 
       resource_record = @resource_klass.find_by_key(key,
                                                     context: @context,
-                                                    include_directives: @include_directives)
+                                                    include_directives: @include_directives,
+                                                    fields: @fields)
 
       return JSONAPI::ResourceOperationResult.new(:ok, resource_record)
 
@@ -123,18 +127,19 @@ def apply
   end
 
   class ShowRelatedResourceOperation < Operation
-    attr_reader :source_klass, :source_id, :relationship_type
+    attr_reader :source_klass, :source_id, :relationship_type, :fields
 
     def initialize(resource_klass, options = {})
       super(resource_klass, options)
       @source_klass = options.fetch(:source_klass)
       @source_id = options.fetch(:source_id)
       @relationship_type = options.fetch(:relationship_type)
+      @fields = options[:fields]
       @transactional = false
     end
 
     def apply
-      source_resource = @source_klass.find_by_key(@source_id, context: @context)
+      source_resource = @source_klass.find_by_key(@source_id, context: @context, fields: @fields)
 
       related_resource = source_resource.public_send(@relationship_type)
 
@@ -146,7 +151,7 @@ def apply
   end
 
   class ShowRelatedResourcesOperation < Operation
-    attr_reader :source_klass, :source_id, :relationship_type, :filters, :sort_criteria, :paginator
+    attr_reader :source_klass, :source_id, :relationship_type, :filters, :sort_criteria, :paginator, :fields
 
     def initialize(resource_klass, options = {})
       super(resource_klass, options)
@@ -156,6 +161,7 @@ def initialize(resource_klass, options = {})
       @filters = options[:filters]
       @sort_criteria = options[:sort_criteria]
       @paginator = options[:paginator]
+      @fields = options[:fields]
       @transactional = false
     end
 
@@ -170,7 +176,7 @@ def page_count
     end
 
     def source_resource
-      @_source_resource ||= @source_klass.find_by_key(@source_id, context: @context)
+      @_source_resource ||= @source_klass.find_by_key(@source_id, context: @context, fields: @fields)
     end
 
     def records
@@ -200,7 +206,8 @@ def apply
       related_resource = source_resource.public_send(@relationship_type,
                                               filters:  @filters,
                                               sort_criteria: @sort_criteria,
-                                              paginator: @paginator)
+                                              paginator: @paginator,
+                                              fields: @fields)
 
       return JSONAPI::RelatedResourcesOperationResult.new(:ok, source_resource, @relationship_type, related_resource, options)
 
@@ -210,11 +217,12 @@ def apply
   end
 
   class CreateResourceOperation < Operation
-    attr_reader :data
+    attr_reader :data, :fields
 
     def initialize(resource_klass, options = {})
       super(resource_klass, options)
       @data = options.fetch(:data)
+      @fields = options[:fields]
     end
 
     def apply
@@ -247,12 +255,13 @@ def apply
   end
 
   class ReplaceFieldsOperation < Operation
-    attr_reader :data, :resource_id
+    attr_reader :data, :resource_id, :fields
 
     def initialize(resource_klass, options = {})
       super(resource_klass, options)
       @resource_id = options.fetch(:resource_id)
       @data = options.fetch(:data)
+      @fields = options[:fields]
     end
 
     def apply

lib/jsonapi/request.rb

@@ -295,7 +295,8 @@ def add_find_operation
         filters: @filters,
         include_directives: @include_directives,
         sort_criteria: @sort_criteria,
-        paginator: @paginator
+        paginator: @paginator,
+        fields: @fields
       )
     end
 
@@ -304,7 +305,8 @@ def add_show_operation
         @resource_klass,
         context: @context,
         id: @id,
-        include_directives: @include_directives
+        include_directives: @include_directives,
+        fields: @fields
       )
     end
 
@@ -323,7 +325,8 @@ def add_show_related_resource_operation(relationship_type)
         context: @context,
         relationship_type: relationship_type,
         source_klass: @source_klass,
-        source_id: @source_id
+        source_id: @source_id,
+        fields: @fields
       )
     end
 
@@ -336,7 +339,8 @@ def add_show_related_resources_operation(relationship_type)
         source_id: @source_id,
         filters: @source_klass.verify_filters(@filters, @context),
         sort_criteria: @sort_criteria,
-        paginator: @paginator
+        paginator: @paginator,
+        fields: @fields
       )
     end
 
@@ -359,7 +363,8 @@ def parse_add_operation(data)
         @operations.push JSONAPI::CreateResourceOperation.new(
           @resource_klass,
           context: @context,
-          data: data
+          data: data,
+          fields: @fields
         )
       end
     rescue JSONAPI::Exceptions::Error => e
@@ -622,7 +627,8 @@ def parse_single_replace_operation(data, keys, id_key_presence_check_required: t
         @resource_klass,
         context: @context,
         resource_id: key,
-        data: parse_params(data, updatable_fields)
+        data: parse_params(data, updatable_fields),
+        fields: @fields
       )
     end