Add controller DSL for deserialization.

Author: beauby

lib/jsonapi/rails/action_controller.rb

@@ -0,0 +1,62 @@
+require 'jsonapi/deserializable'
+require 'jsonapi/parser'
+
+module JSONAPI
+  module Rails
+    module ActionController
+      def self.included(base)
+        base.class_eval do
+          extend ClassMethods
+          prepend InstanceMethods
+        end
+      end
+
+      module ClassMethods
+        def deserializable_resource(key, klass = nil, &block)
+          if klass.nil?
+            klass = Class.new(JSONAPI::Deserializable::Resource, &block)
+          end
+          @deserializable_key = key
+          @deserializable_class = klass
+          @deserializable_parser = JSONAPI::Parser::Resource
+        end
+
+        def deserializable_relationship(key, klass = nil, &block)
+          if klass.nil?
+            klass = Class.new(JSONAPI::Deserializable::Relationship, &block)
+          end
+          @deserializable_key = key
+          @deserializable_class = klass
+          @deserializable_parser = JSONAPI::Parser::Relationship
+        end
+
+        def deserializable_class
+          @deserializable_class
+        end
+
+        def deserializable_key
+          @deserializable_key
+        end
+
+        def deserializable_parser
+          @deserializable_parser
+        end
+      end
+
+      module InstanceMethods
+        def params
+          params = super
+          key = self.class.deserializable_key
+          return params if body.key?(key)
+          parser = self.class.deserializable_parser
+          return params unless parser
+
+          parser.parse!(body)
+          deserializable_class = self.class.deserializable_class
+
+          params.merge!(key => deserializable_class.call(params))
+        end
+      end
+    end
+  end
+end

lib/jsonapi/rails/parser.rb

@@ -1,13 +1,10 @@
-require 'jsonapi/parser'
-
 module JSONAPI
   module Rails
     module_function
 
     def parser
       lambda do |body|
         data = JSON.parse(body)
-        JSONAPI.parse_resource!(body)
         data = { _json: data } unless data.is_a?(Hash)
         data.with_indifferent_access
       end

lib/jsonapi/rails/railtie.rb

@@ -1,6 +1,7 @@
 require 'rails/railtie'
 require 'action_controller'
 require 'action_controller/railtie'
+require 'active_support'
 
 require 'jsonapi/rails/parser'
 require 'jsonapi/rails/render'
@@ -36,3 +37,7 @@ class Railtie < ::Rails::Railtie
     end
   end
 end
+
+ActiveSupport.on_load(:action_controller) do
+  include JSONAPI::Rails::ActionController
+end