Sha256: d2b9088808a48120840e77f7c8fe487987f45e1bc168be4dd11441735a5b5817
Contents?: true
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Versions: 7
Compression:
Stored size: 1.14 KB
Contents
require "active_record"
class QueryBase
RelationRequired = Class.new(StandardError)
def initialize(*args)
@options = args.extract_options!
@relation = args.first || base_relation
if relation.nil?
raise(
RelationRequired,
"Queries require a base relation defined. Use .queries method to define relation."
)
elsif !relation.is_a?(ActiveRecord::Relation)
raise(
RelationRequired,
"Queries accept only ActiveRecord::Relation as input"
)
end
end
def self.call(*args)
new(*args).query
end
def self.queries(subject)
self.base_relation = subject
end
def base_relation
return nil if self.class.base_relation.nil?
if self.class.base_relation.is_a?(ActiveRecord::Relation)
self.class.base_relation
elsif self.class.base_relation < ActiveRecord::Base
self.class.base_relation.all
end
end
private
class << self
attr_accessor :base_relation
end
attr_reader :relation, :options
def query
raise(
NotImplementedError,
"You need to implement #query method which returns ActiveRecord::Relation object"
)
end
end
Version data entries
7 entries across 7 versions & 1 rubygems