module Globalize::ActiveRecord::TranslatedAttributesQuery

Public Instance Methods

calculate(*args) click to toggle source
Calls superclass method
# File lib/globalize/active_record/translated_attributes_query.rb, line 72
def calculate(*args)
  column_name = args[1]
  if respond_to?(:translated_attribute_names) && translated_column?(column_name)
    args[1] = translated_column_name(column_name)
    join_translations.calculate(*args)
  else
    super
  end
end
exists?(conditions = :none) click to toggle source
Calls superclass method
# File lib/globalize/active_record/translated_attributes_query.rb, line 64
def exists?(conditions = :none)
  if parsed = parse_translated_conditions(conditions)
    with_translations_in_fallbacks.exists?(parsed)
  else
    super
  end
end
group(*columns) click to toggle source
Calls superclass method
# File lib/globalize/active_record/translated_attributes_query.rb, line 48
def group(*columns)
  if respond_to?(:translated_attribute_names) && parsed = parse_translated_columns(columns)
    join_translations super(parsed)
  else
    super
  end
end
having(opts, *rest) click to toggle source
Calls superclass method
# File lib/globalize/active_record/translated_attributes_query.rb, line 24
def having(opts, *rest)
  if parsed = parse_translated_conditions(opts)
    join_translations(super(parsed, *rest))
  else
    super
  end
end
join_translations(relation = self) click to toggle source
# File lib/globalize/active_record/translated_attributes_query.rb, line 119
def join_translations(relation = self)
  if relation.joins_values.include?(:translations)
    relation
  else
    relation.with_translations_in_fallbacks
  end
end
order(opts, *rest) click to toggle source
Calls superclass method
# File lib/globalize/active_record/translated_attributes_query.rb, line 32
def order(opts, *rest)
  if respond_to?(:translated_attribute_names) && parsed = parse_translated_order(opts)
    join_translations super(parsed)
  else
    super
  end
end
parse_translated_conditions(opts) click to toggle source
# File lib/globalize/active_record/translated_attributes_query.rb, line 94
def parse_translated_conditions(opts)
  if opts.is_a?(Hash) && respond_to?(:translated_attribute_names) && (keys = opts.symbolize_keys.keys & translated_attribute_names).present?
    opts = opts.dup
    keys.each { |key| opts[translated_column_name(key)] = opts.delete(key) || opts.delete(key.to_s) }
    opts
  end
end
pluck(*column_names) click to toggle source
Calls superclass method
# File lib/globalize/active_record/translated_attributes_query.rb, line 82
def pluck(*column_names)
  if respond_to?(:translated_attribute_names) && parsed = parse_translated_columns(column_names)
    join_translations.pluck(*parsed)
  else
    super
  end
end
reorder(opts, *rest) click to toggle source
Calls superclass method
# File lib/globalize/active_record/translated_attributes_query.rb, line 40
def reorder(opts, *rest)
  if respond_to?(:translated_attribute_names) && parsed = parse_translated_order(opts)
    join_translations super(parsed)
  else
    super
  end
end
select(*columns) click to toggle source
Calls superclass method
# File lib/globalize/active_record/translated_attributes_query.rb, line 56
def select(*columns)
  if respond_to?(:translated_attribute_names) && parsed = parse_translated_columns(columns)
    join_translations super(parsed)
  else
    super
  end
end
where(opts = :chain, *rest) click to toggle source
Calls superclass method
# File lib/globalize/active_record/translated_attributes_query.rb, line 14
def where(opts = :chain, *rest)
  if opts == :chain
    WhereChain.new(spawn)
  elsif parsed = parse_translated_conditions(opts)
    join_translations(super(parsed, *rest))
  else
    super
  end
end
where_values_hash(*args) click to toggle source
Calls superclass method
# File lib/globalize/active_record/translated_attributes_query.rb, line 103
def where_values_hash(*args)
  return super unless respond_to?(:translations_table_name)
  equalities = respond_to?(:with_default_scope) ? with_default_scope.where_values : where_values
  equalities = equalities.grep(Arel::Nodes::Equality).find_all { |node|
    node.left.relation.name == translations_table_name
  }

  binds = Hash[bind_values.find_all(&:first).map { |column, v| [column.name, v] }]

  super.merge(Hash[equalities.map { |where|
    name = where.left.name
    [name, binds.fetch(name.to_s) { right = where.right; right.is_a?(Arel::Nodes::Casted) ? right.val : right }]
  }])
end
with_translations_in_fallbacks() click to toggle source
# File lib/globalize/active_record/translated_attributes_query.rb, line 90
def with_translations_in_fallbacks
  with_translations(Globalize.fallbacks)
end

Private Instance Methods

arel_translated_order_node(column, direction) click to toggle source
# File lib/globalize/active_record/translated_attributes_query.rb, line 129
def arel_translated_order_node(column, direction)
  unless translated_column?(column)
    return self.arel_table[column].send(direction)
  end

  full_column = translated_column_name(column)

  # Inject `full_column` to the select values to avoid
  # PG::InvalidColumnReference errors with distinct queries on Postgres
  if select_values.empty?
    self.select_values = [self.arel_table[Arel.star], full_column]
  else
    self.select_values << full_column
  end

  translation_class.arel_table[column].send(direction)
end
parse_translated_columns(columns) click to toggle source
# File lib/globalize/active_record/translated_attributes_query.rb, line 170
def parse_translated_columns(columns)
  if columns.is_a?(Array) && (columns.flatten & translated_attribute_names).present?
    columns.flatten.map { |column| translated_column?(column) ? translated_column_name(column) : column }
  end
end
parse_translated_order(opts) click to toggle source
# File lib/globalize/active_record/translated_attributes_query.rb, line 147
def parse_translated_order(opts)
  case opts
  when Hash
    # Do not process nothing unless there is at least a translated column
    # so that the `order` statement will be processed by the original
    # ActiveRecord method
    return nil unless opts.find { |col, dir| translated_column?(col) }

    # Build order arel nodes for translateds and untranslateds statements
    ordering = opts.map do |column, direction|
      arel_translated_order_node(column, direction)
    end

    order(ordering).order_values
  when Symbol
    parse_translated_order({ opts => :asc })
  when Array
    parse_translated_order(Hash[opts.collect { |opt| [opt, :asc] } ])
  else # failsafe returns nothing
    nil
  end
end
translated_column?(column) click to toggle source
# File lib/globalize/active_record/translated_attributes_query.rb, line 176
def translated_column?(column)
  translated_attribute_names.include?(column)
end