2
Googleがこれを理解するために私の探求で私を助けていないので、私はこの問題に遭遇し、誰のためにそれを共有することになり考え出し:ルビーNoMethodError:[]のための未定義のメソッド `メッセージ:配列
ときモデルを保存しようとすると、私が手
NoMethodError: undefined method `messages' for []:Array
0: /.../active_record/autosave_association.rb:491:in `_ensure_no_duplicate_errors'
1: /.../active_support/callbacks.rb:413:in `block in make_lambda'
2: /.../active_support/callbacks.rb:246:in `block in halting'
3: /.../active_support/callbacks.rb:511:in `block in invoke_after'
4: /.../active_support/callbacks.rb:511:in `each'
5: /.../active_support/callbacks.rb:511:in `invoke_after'
6: /.../active_support/callbacks.rb:132:in `run_callbacks'
7: /.../active_support/callbacks.rb:825:in `_run_validation_callbacks'
8: /.../active_model/validations/callbacks.rb:110:in `run_validations!'
9: /.../active_model/validations.rb:335:in `valid?'
例モデル:
class Foo < ActiveRecord::Base
def do_stuff
@errors = []
@errors << 'Bad stuff' if self.bar > 4
@errors
end
end
例コード:
foo = Foo.first
foo.do_stuff
foo.save # or foo.valid?, etc.