Module: Sequel::Plugins::ManyThroughMany::ClassMethods

Defined in:
lib/sequel/plugins/many_through_many.rb

Instance Method Summary collapse

Instance Method Details

#many_through_many(name, through, opts = OPTS, &block) ⇒ Object

Create a many_through_many association. Arguments:

  • name - Same as associate, the name of the association.
  • through - The tables and keys to join between the current table and the associated table. Must be an array, with elements that are either 3 element arrays, or hashes with keys :table, :left, and :right. The required entries in the array/hash are: :table (first array element) :: The name of the table to join. :left (middle array element) :: The key joining the table to the previous table. Can use an array of symbols for a composite key association. :right (last array element) :: The key joining the table to the next table. Can use an array of symbols for a composite key association. If a hash is provided, the following keys are respected when using eager_graph: :block :: A proc to use as the block argument to join. :conditions :: Extra conditions to add to the JOIN ON clause. Must be a hash or array of two pairs. :join_type :: The join type to use for the join, defaults to :left_outer. :only_conditions :: Conditions to use for the join instead of the ones specified by the keys.
  • opts - The options for the associaion. Takes the same options as many_to_many.


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# File 'lib/sequel/plugins/many_through_many.rb', line 160

def many_through_many(name, through, opts=OPTS, &block)
  associate(:many_through_many, name, opts.merge(through.is_a?(Hash) ? through : {:through=>through}), &block)
end