如何将发布请求发送到 Rails 操作

Question

I'm new to rails so I don't know if that is the best practice. I'm trying to send user input from index view to the index action using ajax then update the view with user input. I'm not trying to save this input in the database.

The @url always return nil.

NOTE: I try to create a custom action with no luck because it requires a template.

Thanks in advance :)

The index action

def index
    @url = params[:option]
  end

The index view

<input type="text" id="exampleFormControlInput1">

<p id="resp-result"><%= @url %></p>


<script type="text/javascript">
        $(".button").click(function(event){
             var userinput = document.getElementById("form").value;
             console.log(userinput);
            event.preventDefault();
            $.ajax({
                url:"/responses/",
                type: "POST",
                data: {option: userinput},
                dataType: "text",
                success:function(result){
                  alert("success" + result);

                },
                error:function(result){
                   alert("error" + result);
                }
            });
        });
</script>

Answer 1

Yuna you will need to output response in json. lets assume that your ajax script can send data to ruby on rails backend properly.

Try this

at ajax not this

  url:"/responses/",

but

  url:"/responses.json",

you can then get result as per

alert("success" + result.myurl);

you can myurl as part of the json response

Finally try this

def index
    respond_to do |format|
        #@url = params[:option]
        @url='nancy more url'
        format.json do
          render json: {myurl: @url}.to_json
        end
    end
end