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

Inherits:
QueryMethods show all
Defined in:
lib/mobility/backend/active_record/key_value/query_methods.rb

Instance Method Summary collapse

Constructor Details

#initialize(attributes, **options) ⇒ QueryMethods

Returns a new instance of QueryMethods.



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# File 'lib/mobility/backend/active_record/key_value/query_methods.rb', line 4

def initialize(attributes, **options)
  super
  association_name, translations_class = options[:association_name], options[:class_name]
  @association_name    = association_name
  attributes_extractor = @attributes_extractor

  define_method :"join_#{association_name}" do |*attributes, **options|
    attributes.inject(self) do |relation, attribute|
      t = translations_class.arel_table.alias(:"#{attribute}_#{association_name}")
      m = arel_table
      join_type = options[:outer_join] ? Arel::Nodes::OuterJoin : Arel::Nodes::InnerJoin
      relation.joins(m.join(t, join_type).
                     on(t[:key].eq(attribute).
                        and(t[:locale].eq(Mobility.locale).
                            and(t[:translatable_type].eq(name).
                                and(t[:translatable_id].eq(m[:id]))))).join_sources)
    end
  end

  define_method :where! do |opts, *rest|
    if i18n_keys = attributes_extractor.call(opts)
      opts = opts.with_indifferent_access
      i18n_nulls = i18n_keys.select { |key| opts[key].nil? }
      i18n_keys.each { |attr| opts["#{attr}_#{association_name}"] = { value: opts.delete(attr) }}
      super(opts, *rest).
        send("join_#{association_name}", *(i18n_keys - i18n_nulls)).
        send("join_#{association_name}", *i18n_nulls, outer_join: true)
    else
      super(opts, *rest)
    end
  end

  attributes.each do |attribute|
    define_method :"find_by_#{attribute}" do |value|
      find_by(attribute.to_sym => value)
    end
  end
end

Instance Method Details

#extended(relation) ⇒ Object 



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# File 'lib/mobility/backend/active_record/key_value/query_methods.rb', line 43

def extended(relation)
  super
  association_name     = @association_name
  attributes_extractor = @attributes_extractor

  mod = Module.new do
    define_method :not do |opts, *rest|
      if i18n_keys = attributes_extractor.call(opts)
        opts = opts.with_indifferent_access
        i18n_keys.each { |attr| opts["#{attr}_#{association_name}"] = { value: opts.delete(attr) }}
        super(opts, *rest).send(:"join_#{association_name}", *i18n_keys)
      else
        super(opts, *rest)
      end
    end
  end
  relation.model.mobility_where_chain.prepend(mod)
end