blob: fe28908cc235ed1a7f7bb0c0fec56770b48ca242 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
|
module ActiveRelation
class Selection < Compound
attr_reader :predicate
def initialize(relation, *predicates)
@predicate = predicates.shift
@relation = predicates.empty?? relation : Selection.new(relation, *predicates)
end
def ==(other)
self.class == other.class and
relation == other.relation and
predicate == other.predicate
end
def descend(&block)
Selection.new(relation.descend(&block), yield(predicate))
end
def selects
relation.selects + [predicate]
end
end
end
|