What is the best way to transfer an id from JavaScript to Rails while utilizing ajax?

Question

What is the best way to transfer an id from JavaScript to Rails while utilizing ajax?

Is there a way to call a rail route and pass in an ID from javascript?

I have recently started using rails routes within my application, even in js.

The current code I am using is:

# app/assets/javascript/verifying_link.js
$.ajax({
  url: "/verify_link/"+id+"&table_row="+row,

However, I would like to switch to using:

# app/assets/javascript/verifying_link.js.erb

But I am unsure how to pass the id from javascript. Is there a way to do this?

I attempted the following:

url: "<%= Rails.application.routes.url_helpers.verify_link_path(id) %>" + "&table_row="+row,

Unfortunately, this resulted in an error:-

undefined local variable or method `id' for#<#<Class:0x00000001ca3220>:0x007f6228c792f0>
(in /...linker/app/assets/javascript/verifying_link.js.erb)

javascript ruby-on-rails ruby ajax routes

Answer 1

Answer №1

Place it within the link

Use it as data

--

Route

If you've already tried, you can pass it in the route itself:

# app/assets/javascript/verifying_link.js
$(document).on("click", ".element", function(){
   $.ajax({
     url: "/verify_link/"+id+"&table_row="+row
   });
});

To achieve this, include the id from your HTML.

Your ajax will be triggered by an event associated with an HTML element that now has data or id attributes (HTML5):

#app/views/controller/view.html.erb
<%= link_to "Your Link", path_to_link, id: @item.id %>

#app/assets/javascript/verifying_link.js
$(document).on("click", ".element", function(){
   var id = $(this).attr("id");

   $.ajax({
      url: "/verify_link/"+id,
   });
});

Ensure to pass the data from HTML to JS for this to function correctly

Data

Alternatively (works only on collection routes), you can send the id in the data tag. This won't help include the id in your JS, but it's still significant:

#app/assets/javascript/verifying_link.js
$(document).on("click", ".element", function(){
   var id = $(this).attr("id");
   $.ajax({
      url: "/verify_link",
      data: { id: id }
   });
});

The difference here is that if you need to include other data, you can add it in the data attribute. Also, ensure your routes match what you're sending as data (for instance, member routes should have the id appended to the URL)

Answer 2

Place it within the link

Use it as data

--

Route

If you've already tried, you can pass it in the route itself:

# app/assets/javascript/verifying_link.js
$(document).on("click", ".element", function(){
   $.ajax({
     url: "/verify_link/"+id+"&table_row="+row
   });
});

To achieve this, include the id from your HTML.

Your ajax will be triggered by an event associated with an HTML element that now has data or id attributes (HTML5):

#app/views/controller/view.html.erb
<%= link_to "Your Link", path_to_link, id: @item.id %>

#app/assets/javascript/verifying_link.js
$(document).on("click", ".element", function(){
   var id = $(this).attr("id");

   $.ajax({
      url: "/verify_link/"+id,
   });
});

Ensure to pass the data from HTML to JS for this to function correctly

Data

Alternatively (works only on collection routes), you can send the id in the data tag. This won't help include the id in your JS, but it's still significant:

#app/assets/javascript/verifying_link.js
$(document).on("click", ".element", function(){
   var id = $(this).attr("id");
   $.ajax({
      url: "/verify_link",
      data: { id: id }
   });
});

The difference here is that if you need to include other data, you can add it in the data attribute. Also, ensure your routes match what you're sending as data (for instance, member routes should have the id appended to the URL)

Answer 3

Answer №2

To access Rails values in JavaScript files, you have a few options. One way is to pass the value through the URL or create a hidden block within your view. This allows you to then retrieve and use these values in your JavaScript code.

Answer 4

To access Rails values in JavaScript files, you have a few options. One way is to pass the value through the URL or create a hidden block within your view. This allows you to then retrieve and use these values in your JavaScript code.

What is the best way to transfer an id from JavaScript to Rails while utilizing ajax?

Answer №1

Answer №2

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