method

structurally_compatible?

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What's this?

structurally_compatible?(other) public

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.where("id = 1"))
# => false

Show source

# File activerecord/lib/active_record/relation/query_methods.rb, line 796
    def structurally_compatible?(other)
      structurally_incompatible_values_for(other).empty?
    end

structurally_compatible?

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