Basic AMS::Serializer#as_json

test/fixtures/poro.rb

@@ -0,0 +1,59 @@
+# frozen_string_literal: true
+class PlainModel
+  class << self
+    attr_accessor :attribute_names, :association_names
+
+    def attributes(*names)
+      self.attribute_names |= names.map(&:to_sym)
+      # Silence redefinition of methods warnings
+      silence_warnings do
+        attr_accessor(*names)
+      end
+    end
+
+    def associations(*names)
+      self.association_names |= names.map(&:to_sym)
+      # Silence redefinition of methods warnings
+      silence_warnings do
+        attr_accessor(*names)
+      end
+    end
+
+    def silence_warnings
+      original_verbose = $VERBOSE
+      $VERBOSE = nil
+      yield
+    ensure
+      $VERBOSE = original_verbose
+    end
+  end
+  self.attribute_names = []
+  self.association_names = []
+
+  def initialize(fields = {})
+    fields ||= {} # protect against nil
+    fields.each do |key, value|
+      send("#{key}=", value)
+    end
+  end
+
+  def attributes
+    self.class.attribute_names.each_with_object({}) do |attribute_name, result|
+      result[attribute_name] = public_send(attribute_name).freeze
+    end.freeze
+  end
+
+  def associations
+    association_names.each_with_object({}) do |association_name, result|
+      result[association_name] = public_send(association_name).freeze
+    end.freeze
+  end
+end
+
+class ParentModel< PlainModel
+  attributes :id, :name, :description
+  associations :child_models
+end
+class ChildModel < PlainModel
+  attributes :id, :name
+end