Class: Mobility::Backend::ActiveRecord::QueryMethods

Inherits:

Module

• Object
• Module
• Mobility::Backend::ActiveRecord::QueryMethods

Defined in:

lib/mobility/backend/active_record/query_methods.rb

Overview

Defines query method overrides to handle translated attributes for ActiveRecord models. For details see backend-specific subclasses.

Direct Known Subclasses

Column::QueryMethods, Hstore::QueryMethods, Jsonb::QueryMethods, KeyValue::QueryMethods, Serialized::QueryMethods, Table::QueryMethods

Instance Method Summary

• #extended(relation) ⇒ Object
• #initialize(attributes, **options) ⇒ QueryMethods constructor

  A new instance of QueryMethods.

Constructor Details

#initialize(attributes, **options) ⇒ QueryMethods

Returns a new instance of QueryMethods.

Parameters:

• attributes (Array<String>) —

  Translated attributes

• options (Hash) —

  Backend options

# File 'lib/mobility/backend/active_record/query_methods.rb', line 13

def initialize(attributes, **options)
  @attributes = attributes
  @attributes_extractor = lambda do |opts|
    opts.is_a?(Hash) && (opts.keys.map(&:to_s) & attributes).presence
  end
end

Instance Method Details

#extended(relation) ⇒ Object

Parameters:

• relation (ActiveRecord::Relation) —

  Relation being extended

# File 'lib/mobility/backend/active_record/query_methods.rb', line 21

def extended(relation)
  model_class = relation.model
  unless model_class.respond_to?(:mobility_where_chain)
    model_class.define_singleton_method(:mobility_where_chain) do
      @mobility_where_chain ||= Class.new(::ActiveRecord::QueryMethods::WhereChain)
    end

    relation.define_singleton_method :where do |opts = :chain, *rest|
      opts == :chain ? mobility_where_chain.new(spawn) : super(opts, *rest)
    end
  end
end