Rails 500错误，显示PUT请求的空白页

Question

I have setup custom error pages in my rails app.

application.rb

config.exceptions_app = self.routes

routes.rb

  get '404', to: 'application#page_not_found'
  get '422', to: 'application#server_error'
  get '500', to: 'application#server_error'

application_controller.rb

  def page_not_found
    respond_to do |format|
      format.html { render template: 'errors/not_found_error', layout: 'layouts/application', status: 404 }
      format.all  { render nothing: true, status: 404 }
    end
  end

  def server_error
    respond_to do |format|
      format.html { render template: 'errors/internal_server_error', layout: 'layouts/error', status: 500 }
      format.all  { render nothing: true, status: 500}
    end
  end 

My custom 500 error page shows up fine when I do a GET request that throws the error but when I submit a form that triggers a NoMethodError, so a PUT request, I just get a blank page.

Any ideas why the 500 error page displays correctly for a GET request but not for a PUT request?

I tried changing the server_error method to

  def server_error
    render template: 'errors/internal_server_error', layout: 'layouts/error', status: 500 
  end 

but this didn't seem to help.

Let me know if I can provide more code, I'm not sure how to troubleshoot this.

Answer 1

use match and via on your routes.rb to route all types of HTTP requests to custom error actions

  # error routes
  match '/404' => 'application#page_not_found', :via => :all
  match '/422' => 'application#unprocessable_entity', :via => :all
  match '/500' => 'application#server_error', :via => :all