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When upgrading to Rails 4.2.3 I get "NameError: uninitialized constant ActionController::Respon...

Controller action respond_to format error ActionController::UnknownFormat...

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Dispatch Rails Controller Action Outside of HTTP context (not in a unit test)...

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Rails 4.2 ActionController:BadRequest custom error message...

Unable to load data on dashboard via ajax...

Ruby: Form not submit - ActionController::Parameters permitted: false...

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ActionController::ParameterMissing: param is missing or the value is empty:...

Rails: passing params hash to model...

rescue_from ::AbstractController::ActionNotFound not working...

Accessing value(s) of ActionController Parameters hash...

Rails: .require() without actually requiring it?...

MVC - Call function without change pages...