diff options
Diffstat (limited to 'activerecord/lib/active_record/relation/spawn_methods.rb')
| -rw-r--r-- | activerecord/lib/active_record/relation/spawn_methods.rb | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/activerecord/lib/active_record/relation/spawn_methods.rb b/activerecord/lib/active_record/relation/spawn_methods.rb index d21f02cd5f..5394c1b28b 100644 --- a/activerecord/lib/active_record/relation/spawn_methods.rb +++ b/activerecord/lib/active_record/relation/spawn_methods.rb @@ -1,4 +1,3 @@ -require 'active_support/core_ext/object/blank' require 'active_support/core_ext/hash/except' require 'active_support/core_ext/hash/slice' require 'active_record/relation/merger' @@ -24,6 +23,13 @@ module ActiveRecord # # Returns the intersection of all published posts with the 5 most recently created posts. # # (This is just an example. You'd probably want to do this with a single query!) # + # Procs will be evaluated by merge: + # + # Post.where(published: true).merge(-> { joins(:comments) }) + # # => Post.where(published: true).joins(:comments) + # + # This is mainly intended for sharing common conditions between multiple associations. + # def merge(other) if other.is_a?(Array) to_a & other @@ -36,8 +42,12 @@ module ActiveRecord # Like #merge, but applies changes in place. def merge!(other) - klass = other.is_a?(Hash) ? Relation::HashMerger : Relation::Merger - klass.new(self, other).merge + if !other.is_a?(Relation) && other.respond_to?(:to_proc) + instance_exec(&other) + else + klass = other.is_a?(Hash) ? Relation::HashMerger : Relation::Merger + klass.new(self, other).merge + end end # Removes from the query the condition(s) specified in +skips+. |