Module: Prim::ClassMethods

Includes:
Helpers
Defined in:
lib/prim.rb

Instance Method Summary collapse

Methods included from Helpers

#plural_sym, #singular_sym

Instance Method Details

#has_primary(name, options = {}) ⇒ Object

TODO: allow multiple singular names in one call.



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# File 'lib/prim.rb', line 19

def has_primary name, options = {}
  singular_name    = name.to_sym
  association_name = plural_sym(singular_name)

  self.prim_relationships = self.prim_relationships.try(:dup) || Hash.new
  self.prim_relationships[ singular_name ] = Prim::Relationship.new(association_name, self, options)

  # Store this configuration for global access.
  Prim.configured_primaries << self.prim_relationships[ singular_name ]

  # Create dynamic methods for getting and setting the
  # primary Collection member.
  define_method "primary_#{ singular_name }" do
    prim_collection_for(singular_name).primary
  end

  define_method "primary_#{ singular_name }=" do |instance|
    prim_collection_for(singular_name).primary = instance
  end

  # We alias the association's method chain so the original can be accessed.
  # IS THIS IMPORTANT?!
  define_method "#{ association_name }_with_primaries" do
    prim_collection_for(singular_name).all
  end

  alias_method_chain association_name, :primaries
end