Class: RESTFramework::NativeModelSerializer

Inherits:
BaseSerializer show all
Defined in:
lib/rest_framework/serializers.rb

Overview

This serializer uses ‘.as_json` to serialize objects. Despite the name, `.as_json` is an `ActiveModel` method which converts objects to Ruby primitives (with the top-level being either an array or a hash).

Instance Attribute Summary

Attributes inherited from BaseSerializer

#errors

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(many: nil, model: nil, **kwargs) ⇒ NativeModelSerializer

Returns a new instance of NativeModelSerializer.



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# File 'lib/rest_framework/serializers.rb', line 20

def initialize(many: nil, model: nil, **kwargs)
  super(**kwargs)

  if many.nil?
    @many = @object.respond_to?(:count) ? @object.count : nil
  else
    @many = many
  end

  @model = model || (@controller ? @controller.send(:get_model) : nil)
end

Class Method Details

.[](key) ⇒ Object

Allow a serializer class to be used as a hash directly in a nested serializer config.



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# File 'lib/rest_framework/serializers.rb', line 102

def self.[](key)
  unless instance_variable_defined?(:@_nested_config)
    @_nested_config = self.new.get_serializer_config
  end
  return @_nested_config[key]
end

.[]=(key, value) ⇒ Object 



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# File 'lib/rest_framework/serializers.rb', line 108

def self.[]=(key, value)
  unless instance_variable_defined?(:@_nested_config)
    @_nested_config = self.new.get_serializer_config
  end
  return @_nested_config[key] = value
end

Instance Method Details

#[](key) ⇒ Object

Allow a serializer instance to be used as a hash directly in a nested serializer config.



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# File 'lib/rest_framework/serializers.rb', line 88

def [](key)
  unless instance_variable_defined?(:@_nested_config)
    @_nested_config = self.get_serializer_config
  end
  return @_nested_config[key]
end

#[]=(key, value) ⇒ Object 



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# File 'lib/rest_framework/serializers.rb', line 94

def []=(key, value)
  unless instance_variable_defined?(:@_nested_config)
    @_nested_config = self.get_serializer_config
  end
  return @_nested_config[key] = value
end

#get_action ⇒ Object

Get controller action, if possible.



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# File 'lib/rest_framework/serializers.rb', line 33

def get_action
  return @controller&.action_name&.to_sym
end

#get_local_serializer_config ⇒ Object

Get a locally defined configuration, if one is defined.



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# File 'lib/rest_framework/serializers.rb', line 38

def get_local_serializer_config
  action = self.get_action

  if action && self.action_config
    # Index action should use :list serializer config if :index is not provided.
    action = :list if action == :index && !self.action_config.key?(:index)

    return self.action_config[action] if self.action_config[action]
  end

  # No action_config, so try singular/plural config.
  return self.plural_config if @many && self.plural_config
  return self.singular_config if !@many && self.singular_config

  # Lastly, try returning the default config.
  return self.config
end

#get_serializer_config ⇒ Object

Get a configuration passable to ‘as_json` for the object.



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# File 'lib/rest_framework/serializers.rb', line 57

def get_serializer_config
  # Return a locally defined serializer config if one is defined.
  if local_config = self.get_local_serializer_config
    return local_config
  end

  # Return a serializer config if one is defined.
  if serializer_config = @controller.send(:get_native_serializer_config)
    return serializer_config
  end

  # If the config wasn't determined, build a serializer config from model fields.
  fields = @controller.try(:get_fields) if @controller
  unless fields.blank?
    columns, methods = fields.partition { |f| f.to_s.in?(@model.column_names) }
    return {only: columns, methods: methods}
  end

  return {}
end

#serialize ⇒ Object

Convert the object (record or recordset) to Ruby primitives.



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# File 'lib/rest_framework/serializers.rb', line 79

def serialize
  if @object
    @many = @object.respond_to?(:each) if @many.nil?
    return @object.as_json(self.get_serializer_config)
  end
  return nil
end