Having trouble executing the JavaScript file after rendering it through Rails

Question

Having trouble executing the JavaScript file after rendering it through Rails

Having an issue with my Ruby (1.9.3p194 (2012-04-20 revision 35410) [x86_64-linux]) on Rails (3.2.6) application: I am trying to execute a js file, but it only prints without executing.

View:

291             <%= form_for :change_top_ten, remote: true, url: {controller: :users, action: :change_top_ten, format: :js} do |f| %>
292                 <%= f.select :status, options_for_select(@categories_and_interests, selected: "tutti"), {class: :'deafult-select'}, onchange: "this.form.submit();" %>
293             <% end %>

Controller:

1658   def change_top_ten
1659     @filter = params[:change_top_ten][:status]
1660   end

change_top_ten.js.erb

  1 alert('here');

server log:

Started POST "/change_top_ten.js" for 10.0.2.2 at 2015-10-29 10:30:10 +0000
Processing by UsersController#change_top_ten as JS
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"+v0oW+p0fy9IxpfbaKTj7g9yZSzffK+SQG52Mx3vjwQ=", "change_top_ten"=>{"status"=>"prof_2"}}
  User Load (56.4ms)  SELECT "users".* FROM "users" WHERE "users"."has_confirmed" = 't' AND "users"."id" = ? LIMIT 1  [["id", 13]]
  Rendered users/change_top_ten.js.erb (0.1ms)
Completed 200 OK in 154.7ms (Views: 34.9ms | ActiveRecord: 66.0ms)

The JavaScript file is being rendered as an html page: blank page with "alert('here');" printed on it.

EDIT: Adding this in response to the first comment:

application.js

  1 // This is a manifest file that'll be compiled into application.js, which will include all the files
  2 // listed below.
  3 //
  4 // Any JavaScript/Coffee file within this directory, lib/assets/javascripts, vendor/assets/javascripts,
  5 // or vendor/assets/javascripts of plugins, if any, can be referenced here using a relative path.
  6 //
  7 // It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the
  8 // the compiled file.
  9 //
 10 // WARNING: THE FIRST BLANK LINE MARKS THE END OF WHAT'S TO BE PROCESSED, ANY BLANK LINE SHOULD
 11 // GO AFTER THE REQUIRES BELOW.
 12 //
 13 //# require angular
 14 //= require jquery
 15 //= require jquery_ujs
 16 //= require jquery.countdown
 17 //= require jquery.remotipart
 18 //# require_tree .

Jquery is imported because there are other calls similar to the one mentioned here and they work fine.

javascript ruby-on-rails ruby

Answer 1

Answer №1

It appears that the issue with your ajax query is related to how the response is being interpreted as javascript. To remedy this, consider incorporating the following code snippet into your application.js file or a location where it can run prior to rendering your form.

$.ajax({
    url: this.href,
    dataType: "script",
    beforeSend: function(xhr) {xhr.setRequestHeader("Accept", text/javascript");}
});

By specifying the data type of all ajax requests as 'script', you should ensure that the response is treated as javascript and evaluated accordingly.

Answer 2

It appears that the issue with your ajax query is related to how the response is being interpreted as javascript. To remedy this, consider incorporating the following code snippet into your application.js file or a location where it can run prior to rendering your form.

$.ajax({
    url: this.href,
    dataType: "script",
    beforeSend: function(xhr) {xhr.setRequestHeader("Accept", text/javascript");}
});

By specifying the data type of all ajax requests as 'script', you should ensure that the response is treated as javascript and evaluated accordingly.

Answer 3

Answer №2

To incorporate the respond_to js in your method, you can simply add the following code:

def update_top_list
  @filter = params[:update_top_list][:status]
  respond_to do |format|
    format.js
  end
end

This will trigger the execution of your update_top_list.js.erb file. I trust this information proves useful to you.

Answer 4

To incorporate the respond_to js in your method, you can simply add the following code:

def update_top_list
  @filter = params[:update_top_list][:status]
  respond_to do |format|
    format.js
  end
end

This will trigger the execution of your update_top_list.js.erb file. I trust this information proves useful to you.

Answer 5

Answer №3

I encountered an issue and managed to find a temporary workaround. The culprit turned out to be this snippet of code:

onchange: "this.form.submit();"

Once I removed it and replaced it with the following code:

<%= f.submit :Save, class: :'btn', type: :submit %>

The JavaScript file now runs as intended.

Is there a way for me to trigger form submission using the onchange method while still ensuring that my JavaScript script executes properly?

Answer 6

I encountered an issue and managed to find a temporary workaround. The culprit turned out to be this snippet of code:

onchange: "this.form.submit();"

Once I removed it and replaced it with the following code:

<%= f.submit :Save, class: :'btn', type: :submit %>

The JavaScript file now runs as intended.

Is there a way for me to trigger form submission using the onchange method while still ensuring that my JavaScript script executes properly?

Answer 7

Answer №4

To achieve the desired functionality of submitting a form when a select input is changed, you will need to add some JavaScript code to your application.js file. This code will listen for the onChange event of the select control and trigger the form submission.

Here is an example of what the code could look like:

$('select').on('change', function() {
    $('form').submit();
});

This code snippet will submit any form on the page whenever a select input is changed. To make it more specific, you can target a particular select input and form by adjusting the selectors in the JavaScript code.

Answer 8

To achieve the desired functionality of submitting a form when a select input is changed, you will need to add some JavaScript code to your application.js file. This code will listen for the onChange event of the select control and trigger the form submission.

Here is an example of what the code could look like:

$('select').on('change', function() {
    $('form').submit();
});

This code snippet will submit any form on the page whenever a select input is changed. To make it more specific, you can target a particular select input and form by adjusting the selectors in the JavaScript code.

Answer 9

Answer №5

Ensure that the javascript code is enclosed within opening and closing script tags, like so:

<script type="text/javascript>
    // enter your javascript code here
</script>

Answer 10

Ensure that the javascript code is enclosed within opening and closing script tags, like so:

<script type="text/javascript>
    // enter your javascript code here
</script>

Having trouble executing the JavaScript file after rendering it through Rails

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

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