Sha256: f1562c25b126695ddbe77e4849f448b4e2f706bb64ae0809376a2ce7af25f5ea
Contents?: true
Size: 1.31 KB
Versions: 23
Compression:
Stored size: 1.31 KB
Contents
# frozen_string_literal: true
module Mobility
module Backend
=begin
Adds {#for} method to backend to return ORM-specific backend.
@example KeyValue backend for AR model
class Post < ActiveRecord::Base
# ...
end
Mobility::Backends::KeyValue.for(Post)
#=> Mobility::Backends::ActiveRecord::KeyValue
=end
module OrmDelegator
# @param [Class] model_class Class of model
# @return [Class] Class of backend to use for model
def for(model_class)
namespace = name.split('::')
if Loaded::ActiveRecord && model_class < ::ActiveRecord::Base
require_backend("active_record", namespace.last.underscore)
const_get(namespace.insert(-2, "ActiveRecord").join("::"))
elsif Loaded::Sequel && model_class < ::Sequel::Model
require_backend("sequel", namespace.last.underscore)
const_get(namespace.insert(-2, "Sequel").join("::"))
else
raise ArgumentError, "#{namespace.last} backend can only be used by ActiveRecord or Sequel models"
end
end
private
def require_backend(orm, backend)
begin
orm_backend = "mobility/backends/#{orm}/#{backend}"
require orm_backend
rescue LoadError => e
raise unless e.message =~ /#{orm_backend}/
end
end
end
end
end
Version data entries
23 entries across 23 versions & 1 rubygems