merge(other)
Instance Public methods
Merges in the conditions from other, if other is
an ActiveRecord::Relation. Returns an array representing the
intersection of the resulting records with other, if
other is an array.
1 2 3 4 5 6 7 | Post.where(published: true).joins(:comments).merge( Comment.where(spam: false) )# Performs a single join query with both where conditions.recent_posts = Post.order('created_at DESC').first(5)Post.where(published: true).merge(recent_posts)# 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:
1 2 | Post.where(published: true).merge(-> { joins(:comments) })# => Post.where(published: true).joins(:comments) |
This is mainly intended for sharing common conditions between multiple associations.
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