无法从 Controller 呈现页面以在 Rails 中查看

Question

I am getting 404 This page is missing. I need to pass controller results to view.I have added respective controller and views.I am getting values in controller but not passing those values to views.I didn't get any errors as well.Can anyone help on this?

Below the code I am trying

Controller

class CompareResultsController < ApplicationController

    def compare_results

        executionId1=params['executionId1']
        executionId2=params['executionId2']
         @execution_results1 = ExecutionResult.where(:execution_id => executionId1).pluck(:parametersname,:actual_value)
    
         @execution_results2 = ExecutionResult.where(:execution_id => executionId2).pluck(:parametersname,:actual_value)
    
         puts @execution_results1
    
         puts @execution_results2
    
   
     end

     
    end

JS Code

function compareExecutionResults() {
    
        var checkBoxValue=[]
        $("input[type='checkbox']:checked").each(function(){
            checkBoxValue.push($(this).val());
        });
        var executionId1=checkBoxValue[0];
        var executionId2=checkBoxValue[1];
        
          $.ajax({
            type: "POST",
            contentType: "application/json",
            url: "/compare_results/compare_results",
            data: JSON.stringify({
                executionId1: executionId1,
                executionId2: executionId2
                 }),
               success: function (result) {
              if (result === 'false') {
                  alert('Description  not Updated  !!!');
                  return false;
               } else {
                  alert('Comparing Values !!!');
                  window.location.href = "/compare_results/compare_results";

                }
              }
           }); 
         }

routes

  post "/compare_results/compare_results", to: "compare_results#compare_results"

HTML:

<table>
  <tr>
    <th>Sr.no</th>
    <th>Param Name</th>
    <th>Value</th>
    <th>Param Name</th>
    <th>Value</th>
    <th>Matched</th>
  </tr>
  <% @execution_results.each do |result, index| %>
    <tr>
      <td><%= index + 1 %></td>
      <td><%= result.name %></td>
      <td><%= result.value %></td>
      <td><%= @execution_results2[index].name %></td>
      <td><%= @execution_results2[index].value %></td>
      <td><%= compare_function(result, @execution_results2[index]) %></td>
    </tr>
  <% end %>
</table>

Html View

Views--compare_results--compare_results.html.erb file

Answer 1

You need to make sure that the compare_results method of the controller is exposed in the config/routes.rb file as it is not a standard resource.

Sth like this might help:

post '/compare_results/compare_results', to: 'compare_results#compare_results'

Answer 2

Most probably you are not giving correct path, to check if this is the problem run the following command in terminal, if your rails version is greater than 5 then rails routes , or if its less than 5 then rake routes .

By doing this you will be able to see what URL are being served by your app. Now check if there is a URL(path) matching with the controller action. After that make sure that you have used correct path.

Note: By path I mean which you may have given in link_to to visit this page.