Has many through association: undefined method `klass' for nil:NilClass #611
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Yeah, can you re-run the tests with the |
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You're saying that Ideally, we should probably have a check to ensure that your |
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I added the Feel free to close the issue, unless you want to keep it open for adding a different error message. |
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Sounds good, glad I could help. |
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I have this error with code like this one: class Subject < ActiveRecord::Base
has_one :subject_photo_assignment
has_many :photos, through: :subject_photo_assignments
end |
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@1v You have a |
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@mcmire it's working with "s" too, but tests failing. |
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@1v Okay. Have you tried: class Subject < ActiveRecord::Base
has_one :subject_photo_assignment
has_many :photos, through: :subject_photo_assignment # note that this is singular, not plural
end |
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@mcmire yeah that's how I do right now. But Rails accepts plural too. It took me time to figure out because error message not informative. |
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@1v Okay, fair enough. I'll re-open this issue. |
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I also have this error with this "setup": module Hanuman
class Observation < ActiveRecord::Base
belongs_to :survey, touch: true
end
endHanuman::Observation.class_eval do
has_one :user, through: :survey
endmodule Hanuman
RSpec.describe ObservationAnswer, type: :model do
it { is_expected.to have_one(:user).through(:survey) }
end
end |
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I can verify that the reported issue has been fixed in the version Before: Failure/Error: it { should have_many(:words).through(:pag) }
NoMethodError:
undefined method `class_name' for nil:NilClass
Did you mean? class_evalAfter: Failure/Error: it { should have_many(:words).through(:pag) }
Expected Book to have a has_many association called words through pages (Could not find the source association(s) "word" or :words in model Page. Try 'has_many :words, :through => :pages, :source => <name>'. Is it one of book?)Error text differs as i'm using rails |
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Thanks! Closing. |
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Hi!
I have an Subject model which should have many Photos through SubjectPhotoAssignments. When I test this, I get
undefined method 'klass' for nil:NilClass. Here is my setup:Here is the failing test:
What am I doing wrong? Any help is greatly appreciated. Let me know if more context would be helpful.
I'm using v2.7.0
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