rails coffeescript - how to include a javascript file (in development)?

Question

I have the following coffeescript file that I wish to include:

app/assets/javascripts/groups.js.coffee

I have an application file - app/assets/javascripts/application.js that has:

//= require_tree .

My views/layouts/application.html.haml file includes:

= javascript_include_tag :defaults
= javascript_include_tag "jquery-ui-1.8.22.custom.min.js"

My page does not seem to have the groups.js file

It does get the jquery-ui-1.8.22.custom.min.js but I'm not sure where from.

I tried putting = javascript_include_tag "groups.js" in
views/layouts/application.html.haml and restarted the server and that does then have a groups.js referenced in the header but clicking on that actual file (in the browser show view) shows this:

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8" />
  <title>Action Controller: Exception caught</title>
  <style>
    body { background-color: #fff; color: #333; }

    body, p, ol, ul, td {
      font-family: helvetica, verdana, arial, sans-serif;
      font-size:   13px;
      line-height: 18px;
    }

    pre {
      background-color: #eee;
      padding: 10px;
      font-size: 11px;
    }

    a { color: #000; }
    a:visited { color: #666; }
    a:hover { color: #fff; background-color:#000; }
  </style>
</head>
<body>

<h1>Routing Error</h1>
<p><pre>No route matches [GET] &quot;/javascripts/groups.js&quot;</pre></p>



</body>
</html>

and I also tried putting //= require_tree . in
app/assets/javascript/application.js but just got an error messages that the file wasn't found (javascript/groups.js)

I also tried rake assets:precompile but that gives a strange error about Please install the pg adapter: gem install activerecord-pg-adapter but trying that gives ERROR: Could not find a valid gem activerecord-pg-adapter (>= 0) in any repository

I have no idea what that is about as the application is working full both locally and on remote, using the database with no problem, so it's probably a separate issue. I mention it in case you suggest rake assets:precompile is needed, however to have the assets used in development this should not be an issue (I think).

Originally the app was rails 2.3.8 but now it 3.1.8 - hmm, this be may key if assets came in 3.2+

Add =javascript_include_tag "application" and check by restarting the server if it works for you — kiddorails
– kiddorails, Commented Oct 21, 2013 at 20:12
Thank you, I tried that and still got the Action Controller: Exception caught error — Michael Durrant
– Michael Durrant, Commented Oct 21, 2013 at 20:14
Then guess the coffeescript file is not being compiled afterall. Why don't you create a simple group.js file in app/assets/javascripts with anything (say alert("FOO")) and then check if that file is available. — kiddorails
– kiddorails, Commented Oct 21, 2013 at 20:16
Upgraded to rails 2.3.8 didn't help though. the groups.js file is very simple (only 5 lines long). — Michael Durrant
– Michael Durrant, Commented Oct 21, 2013 at 20:26
Can we discuss this at : chat.stackoverflow.com/rooms/5676/ruby-on-rails ? — kiddorails
– kiddorails, Commented Oct 21, 2013 at 20:28

Drew · Accepted Answer · 2013-10-21 20:42:27Z

4

You might want to make sure that:

config.assets.enabled = true

is present in application.rb.

Also, the following link might be helpful: http://pivotallabs.com/giving-rails-2-the-asset-pipeline!

edited Oct 21, 2013 at 20:42

answered Oct 21, 2013 at 20:13

Drew

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15 Comments

Michael Durrant Over a year ago

This app was originally developed in rails 2.3.8 so I put there is some setting that I need to change that would be pre-set on a new app

Drew Over a year ago

@MichaelDurrant ahh gotcha. Would you maybe be willing to post the dev env config?

Drew Over a year ago

@MichaelDurrant also, which version of rails are you using now?

Michael Durrant Over a year ago

rails 3.1.8 and I think that is the problem. I've changed it to rails 3.2.8 and trying that

Drew Over a year ago

Is config.assets.enabled = true present in application.rb under the config directory?

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