Created
February 9, 2010 03:48
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def belongs_to(association_id, options = {}) | |
association_column = options[:foreign_key] ||= association_id.to_s + "_id" # | |
reflection = create_belongs_to_reflection(association_id, options) | |
if reflection.options[:polymorphic] | |
association_accessor_methods(reflection, BelongsToPolymorphicAssociation) | |
else | |
association_accessor_methods(reflection, BelongsToAssociation) | |
association_constructor_method(:build, reflection, BelongsToAssociation) | |
association_constructor_method(:create, reflection, BelongsToAssociation) | |
end | |
# This is the part i added | |
if options[:counter_cache] | |
define_method("#{association_column}=") do |*params| | |
new_associated_id = params.first unless params.empty? | |
current_associated_id = self.send("#{association_column}") | |
reflection.class_name.constantize.update_counters current_associated_id, reflection.counter_cache_column.to_sym => -1 | |
reflection.class_name.constantize.update_counters new_associated_id, reflection.counter_cache_column.to_sym => +1 | |
self.attributes[association_column.to_sym] = new_associated_id | |
end | |
add_counter_cache_callbacks(reflection) | |
end | |
add_touch_callbacks(reflection, options[:touch]) if options[:touch] | |
configure_dependency_for_belongs_to(reflection) | |
end |
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