Where do I have to put JQuery in Ruby On Rails?
Question
I am implementing in Ruby on Rails.What I want to do works with Jquery. What i want to do is just: I have a file_field_tag, to let the user upload a file, when the user selects a file, the submit button has been enabled. So the user can't click on the button as long as he didn't select a file.
This is the JQuery which I've written
$(document).ready(
function(){
$('input:file').change(
function(){
if ($(this).val()) {
$('input:submit').attr('disabled',false);
// or, as has been pointed out elsewhere:
// $('input:submit').removeAttr('disabled');
}
}
);
});
and my view looks like:
<h2>Import projects and users</h2>
<% form_tag({:action => 'match'}, {:multipart => true, :id => 'file_form_id'}) do %>
<fieldset title="File">
<legend>File</legend>
<table>
<tr>
<td>
<label for="dump_file">
Select a CSV File :
</label>
</td>
<td >
<%= file_field_tag 'file', :size => 500 %></p>
</td>
</tr>
</table>
<%= submit_tag 'Submit', :disabled => true -%>
<% end -%>
I think that this is correct. But where do i have to put this javascript? I really don't know where to put it. I've read to put it in application.js, but when I do this, nothing happens. The button stays disabled. Somebody who knows what I am missing?
2 answers
solution1
0 2011-11-24 13:13:55
looks like you removed those require lines:
// This is a manifest file that'll be compiled into including all the files listed below.
// Add new JavaScript/Coffee code in separate files in this directory and they'll automatically
// be included in the compiled file accessible from http://example.com/assets/application.js
// It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the
// the compiled file.
//
//= require jquery
//= require jquery_ujs
//= require_tree .
solution2
0 2011-11-26 00:44:17
The javascript you wrote goes in /public/javascripts/application.js. You also need a copy of jquery.js or jquery.min.js in /public/javascripts/ or you need to include one of the publicly available versions. Make sure jquery is loaded in your <head> before your application.js.
Example:
<%= javascript_include_tag 'https://ajax.googleapis.com/ajax/libs/jquery/1.7.0/jquery.min.js', 'application' %>
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