Rails ActionController::ParameterMissing in QuestionsController#update

Question

I am trying to create a boolean toggle button to change a value in my model Question. I am just learning rails so bear with me.

In my view I created a button:

<%= link_to("Answered", question_path(question, :status => true), :method => :put) %>

when I look at the URL for the button it is :

hackerQ.com/questions/8?status=true

This is the Error I am given.

Rails ActionController::ParameterMissing in QuestionsController#update

  # Never trust parameters from the scary internet, only allow the white list through.
    def question_params
      params.require(:question).permit(:topic, :question, :status, :user_id, :teacher_id)
    end
end

My Question is should have have created a new action in my questions controller or added something to my params.require?

Request Parameters: {"_method"=>"put", "authenticity_token"=>"10YI0mmzH/R+otKFmEBJLPiQ0NhDIW+9dnFunMl8SCQ=", "status"=>"true", "id"=>"8"} — Tyler
– Tyler, Commented Jul 29, 2013 at 2:18

AhmedAly · Accepted Answer · 2014-01-25 01:58:58Z

1

Your controller is looking for the :question parameter, but it cannot find it anywhere. You are not referencing :question anywhere, i think you have an error in the question_path() call. Try:

<%= link_to("Answered", question_path(:question, :status => true), :method => :put) %>

answered Jan 25, 2014 at 1:58

AhmedAly

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Comments

7stud · Accepted Answer · 2013-07-30 23:18:52Z

1

Because of the code:

params.require(:question)

your params hash has to have a "question" key, like this:

{"question" => {"status"=>"true"}` ...}

I don't know the proper way to get that. Maybe in link_to do:

link_to("Answered", question_path(question, "question[status]" => true), :method => :put)

Also, link_to creates an <a> tag. Why are you calling that a button? In html, a button and a link are different things.

edited Jul 30, 2013 at 23:18

answered Jul 30, 2013 at 13:15

7stud

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Comments

Gustavo Semião-Lobo · Accepted Answer · 2013-07-29 09:31:50Z

0

No, you should have in your app something like this:

<%= form_for(question, method: :put) do |f| %>
  <% f.hidden_field :status, value: true %>
  <% f.submit "Answered" %>
<% end %>

I don't know if this is the right syntax, but you can't send those parameters over the URL.

answered Jul 29, 2013 at 9:31

Gustavo Semião-Lobo

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1 Comment

Tyler Over a year ago

Gives the Same error as my button. However it does not send the parameters over the net.

Kaka Ruto · Accepted Answer · 2018-02-21 13:37:47Z

0

A good way to debug is to print all the params you are passing to your controller from the view. You can do that by adding the following piece in your html.erb file(view):

<%= params.inspect %>

Or to print the value of the param your controller is expecting, use:

<%= params[:question] %>

where question is the name of the param you are expecting.

That will give you a clear picture of what you are passing or failing to pass.

answered Feb 21, 2018 at 13:37

Kaka Ruto

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