Flowdock
method

expand

Importance_0
v4.0.2 - Show latest stable - 0 notes - Class: ActiveRecord::PredicateBuilder
  • 1.0.0
  • 1.1.1
  • 1.1.6
  • 1.2.0
  • 1.2.6
  • 2.0.0
  • 2.0.3
  • 2.1.0
  • 2.2.1
  • 2.3.2
  • 2.3.8
  • 3.0.0
  • 3.0.5
  • 3.0.9
  • 3.1.0
  • 3.2.1
  • 3.2.3
  • 3.2.8
  • 3.2.13
  • 4.0.2 (0)
  • What's this?
expand(klass, table, column, value) public

No documentation

This method has no description. You can help the Ruby on Rails community by adding new notes.

Hide source
# File activerecord/lib/active_record/relation/predicate_builder.rb, line 35
    def self.expand(klass, table, column, value)
      queries = []

      # Find the foreign key when using queries such as:
      # Post.where(author: author)
      #
      # For polymorphic relationships, find the foreign key and type:
      # PriceEstimate.where(estimate_of: treasure)
      if klass && value.class < Base && reflection = klass.reflect_on_association(column.to_sym)
        if reflection.polymorphic?
          queries << build(table[reflection.foreign_type], value.class.base_class)
        end

        column = reflection.foreign_key
      end

      queries << build(table[column], value)
      queries
    end
Register or log in to add new notes.