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Contents
module Panda
module Associations
def self.included(base)
base.extend(ClassMethods)
end
module ClassMethods
def has_one(relation_name)
# for example creates : @video ||= VideoScope.new(self)
define_method relation_name do
param_id = "#{relation_name}_id"
if instance_var = instance_variable_get("@#{relation_name}")
instance_var
else
@associations ||= []
@associations << relation_name
instance_variable_set("@#{relation_name}",
Panda::const_get(relation_name.to_s.capitalize).find(send(param_id.to_sym)))
end
end
end
def has_many(relation_name)
# for example creates : @encodings ||= EncodingScope.new(self)
define_method relation_name do
model_name = "#{relation_name.to_s[0..-2].capitalize}"
if instance_var = instance_variable_get("@#{relation_name}")
instance_var
else
@associations ||= []
@associations << relation_name
instance_variable_set("@#{relation_name}",
Panda::const_get("#{model_name}Scope").new(self))
end
end
end
alias :belongs_to :has_one
end
private
def reset_associations
if @associations
@associations.each do |a|
instance_variable_set("@#{a}",nil)
end
end
end
end
end
Version data entries
15 entries across 15 versions & 2 rubygems