instance method
structurally_compatible?
Ruby on Rails edge
Since v7.0.10Signature
structurally_compatible?(other)Checks whether the given relation is structurally compatible with this relation, to determine if it’s possible to use the #and and #or methods without raising an error. Structurally compatible is defined as: they must be scoping the same model, and they must differ only by #where (if no #group has been defined) or #having (if a #group is present).
Post.where(id: 1).structurally_compatible?(Post.where(author_id: 3))
# => true
Post.joins(:comments).structurally_compatible?(Post.joins(:author))
# => false
Since #and and #or are focused on combining where-like clauses, a multi-value clause that this relation sets and the other one leaves unset is not counted as a difference.
Post.joins(:comments).structurally_compatible?(Post.where(id: 1))
# => true
Parameters
-
otherreq
Source
# File activerecord/lib/active_record/relation/query_methods.rb, line 1382
def structurally_compatible?(other)
structurally_incompatible_values_for(other).empty?
end
Defined in activerecord/lib/active_record/relation/query_methods.rb line 1382
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Defined in ActiveRecord::QueryMethods