Param is missing or the value is empty: ParameterMissing in ResultsController#update

Question

I have a Result that belongs to a Website. After I create the website I also create the result and redirect to its edit page. Here I want to add some more values.

M

Answer 1

I know, what you met. if you strong params is

def result_params
  params.require(:result).permit(:data)
end

Your parameters should has the format like this

Parameters: {"result"=>{"data"=>"string"}}

and your parameters is just

Parameters: {"data"=>"string"}

so you should remove the "result"

Answer 2

The problem lies here:

params.require(:result).permit(:data)

From require documentation,

require ensures that a parameter is present. If it's present, returns the parameter at the given key, otherwise raises an ActionController::ParameterMissing error.

You are requiring result parameter but it's missing from the params. All your values are inside data param. Removing require should do the trick.

params.permit(:data)

If you want to keep require, wrap data inside result in forms.