From http://guides.rubyonrails.org/asset_pipeline.html:

    /* ...
    *= require_self
    *= require_tree .
    */

&quot;In this example **require_self is used. This will put the CSS contained within the file (if any) at the top of any other CSS in this file unless require_self is specified after another require directive.**&quot;

Shedd&#39;s answer used to be correct but now the meaning has changed ever so slightly;

Again, from http://guides.rubyonrails.org/asset_pipeline.html (bolding my own):

&gt; In this example require_self is used. This puts the CSS contained within the file (if any) **at the precise location of the require_self call**. If require_self is called more than once, only the last call is respected.

So you can have `require_self` at any point, and any CSS you have in the file will be injected into the point you wrote `require_self`

    //= require_self

It loads the file itself, to define the order that the files are loaded.

I&#39;m learning PowerShell and I&#39;m trying to build my own module library.

I&#39;ve written a simple module `XMLHelpers.psm1` and put in my folder `$home/WindowsPowerShell/Modules`. 

When I do:

     import-module full_path_to_XMLHelpers.psm1

It works. But when I do:

    import-module XMLHelpers

It doesn&#39;t work and I get the error:

&gt; Import-Module : The specified module &#39;xmlhelpers&#39; was not loaded because no valid module file was found in any module directory.

I&#39;ve checked that the environment variable `PSModulePath` contains this folder. As it is a network folder, I&#39;ve also tried to move it to a local folder and to modify `PSModulePath` but without success

     $env:PSModulePath=$env:PSModulePath+&quot;;&quot;+&#39;C:\local&#39;

Any idea on what could cause this issue?


Powershell import-module doesn&#39;t find modules

I am using RabbitMQ server.

For publishing messages, I set the &lt;b&gt;immediate&lt;/b&gt; field to &lt;i&gt;true&lt;/i&gt; and tried sending 50,000 messages. Using `rabbitmqctl list_queues`, I saw that the number of messages in the queue was &lt;b&gt;zero&lt;/b&gt;.

Then, I changed the &lt;b&gt;immediate&lt;/b&gt; flag to &lt;i&gt;false&lt;/i&gt; and again tried sending 50,000 messages. Using `rabbitmqctl list_queues`, I saw that a total of 100,000 messages were in queues (till now, no consumer was present).

After that, I started a consumer and it consumed all the 100,000 messages.

Can anybody please help me in understanding about the &lt;b&gt;immediate&lt;/b&gt; bit field and this behavior too? Also, I could not understand the concept of the &lt;b&gt;mandatory&lt;/b&gt; bit field.


RabbitMQ use of immediate and mandatory bits

In rails3.1 `application.css` we could see

    /*
     *= require_self
     *= require_tree .
    */

I know that `require_tree .` is just telling the system to bundle together everything from the stylesheets folder into a single file.

But what does `require_self` tells?


What does require_self mean?

In rails3.1 <code>application.css</code> we could see
<pre><code class="hljs language-arduino">/*
 *= require_self
 *= require_tree .
*/
</code></pre>
I know that <code>require_tree .</code> is just telling the system to bundle together everything from the stylesheets folder into a single file.
But what does <code>require_self</code> tells?

Does anyone know how to add another folder to the asset pipeline in Rails 3.1?

I&#39;d like to serve `app/assets/fonts` the same way `app/assets/images` is served.

- - - - -
**Update: 5-7-2013**

Just to add some clarification for future people who find this question to explicitly add an asset path, in your application.rb file:

    config.assets.paths &lt;&lt; &quot;#{Rails.root}/app/assets/fonts&quot;

However, since the above path is under `app/assets` you don&#39;t have to add it explicitly, you just need to restart your rails app so Sprockets can pick it up.

You will have to explicitly add paths that are outside of `app/assets`,`lib/assets`, or `vendor/assets`, and just remember that while Sprockets picks up new files in folders that were present when your application loaded, in my experience it does not pick up new folders in the asset paths without a restart.

Add a new asset path in Rails 3.1

If I generate a new controller in Rails 3.1, also a javascript file with the name of the controller will added automatically. Firstly, I thought this javascript file will used only, when the related controller is called.

By default there is the instruction `//= require_tree .` in the `application.js`-file, that include every javascript file on it&#39;s tree.

How could I load only the controller specific script?

Rails 3.1 asset pipeline: how to load controller-specific scripts?

Is there a built-in way to determine if an asset exists without resorting to `File.exists?(File.join(Rails.root, &quot;foo&quot;, &quot;bar&quot;, &quot;baz&quot;))` and that looks through the asset paths.

My app goes and fetches images from a remote server on a Resque queue; until we have the image downloaded I want to serve a placeholder image.  Currently I&#39;m using `File.exists`... but this means hard-coding a path, which sucks, or looking through the configured asset paths.  It seems like this should be there already, but I can&#39;t find it in the docs.


Rails 3.1: Determine if asset exists

Can someone tell me if I&#39;m just going about the setup the wrong way?

I have the following models that have has_many.through associations:

    class Listing &lt; ActiveRecord::Base
      attr_accessible ... 

      has_many :listing_features
      has_many :features, :through =&gt; :listing_features
  
      validates_presence_of ...
      ...  
    end


    class Feature &lt; ActiveRecord::Base
      attr_accessible ...
  
      validates_presence_of ...
      validates_uniqueness_of ...
  
      has_many :listing_features
      has_many :listings, :through =&gt; :listing_features
    end


    class ListingFeature &lt; ActiveRecord::Base
      attr_accessible :feature_id, :listing_id

      belongs_to :feature  
      belongs_to :listing
    end


I&#39;m using Rails 3.1.rc4, FactoryGirl 2.0.2, factory_girl_rails 1.1.0, and rspec.  Here is my basic rspec rspec sanity check for the `:listing` factory:

    it &quot;creates a valid listing from factory&quot; do
      Factory(:listing).should be_valid
    end

Here is Factory(:listing)

    FactoryGirl.define do
      factory :listing do
        headline    &#39;headline&#39;
        home_desc   &#39;this is the home description&#39;
        association :user, :factory =&gt; :user
        association :layout, :factory =&gt; :layout
        association :features, :factory =&gt; :feature
      end
    end
    

The `:listing_feature` and `:feature` factories are similarly setup.  
If the `association :features` line is commented out, then all my tests pass.  
When it is 

    association :features, :factory =&gt; :feature

the error message is 
`undefined method &#39;each&#39; for #&lt;Feature&gt;`  which I thought made sense to me because because `listing.features` returns an array.  So I changed it to 

    association :features, [:factory =&gt; :feature]

and the error I get now is `ArgumentError: Not registered: features`  Is it just not sensible to be generating factory objects this way, or what am I missing?  Thanks very much for any and all input!

How to set up factory in FactoryBot with has_many association

I created a new Rails project using `rails 3.1.0.rc4` on my local machine but when I try to start the server I get:
Could not find a JavaScript runtime. See [here][1] for a list of available runtimes. (`ExecJS::RuntimeUnavailable`)

Note: This is not about Heroku.


  [1]: https://github.com/sstephenson/execjs

Rails - Could not find a JavaScript runtime?

I’m in the process of building my first solo Rails app using Rails 3.1.rc5. My problem is that I want to have my site render the various CSS files conditionally. I’m using Blueprint CSS and I’m trying to have sprockets/rails render `screen.css` most of the time, `print.css` only when printing, and `ie.css` only when the site is accessed from Internet Explorer.

Unfortunately, the default `*= require_tree` command in the `application.css` manifest includes everything in the `assets/stylesheets` directory and results in an unpleasant CSS jumble. My current workaround is a sort of brute-force method where I specify everything individually:

In application.css:

    *= require_self
    *= require home.css
    ...
    *= require blueprint/screen.css

In my stylesheets partial (haml):

    &lt;!--[if lt IE 9]
    &lt;script src=&quot;http://html5shiv.googlecode.com/svn/trunk/html5.js&quot;&gt;&lt;/script&gt;
    ![endif]--&gt;
    = stylesheet_link_tag &quot;application&quot;
    = stylesheet_link_tag &#39;blueprint/print&#39;, media: &#39;print&#39;
    &lt;!--[if lt IE8]]
    = stylesheet_link_tag &#39;blueprint/ie&#39;
    ![endif]--&gt;
    = javascript_include_tag &quot;application&quot;

This works but it’s not especially pretty. I’ve done a few hours of searching to even get this far but I’m hoping that there’s some easier way to do it that I’ve just missed. If I could even selectively render certain directories (without including subdirectories) it would make the whole process a lot less rigid.

Thanks!

    

Using Rails 3.1 assets pipeline to conditionally use certain css

I&#39;m sharing a configuration yml file client side, that I need to also load on the server side, I&#39;ve placed it inside app/assets/javascripts/configuration.yml

I can use #{asset_path &#39;configuration.yml&#39;} inside a view to get the path, but I can&#39;t inside a controller. I could access directly using &quot;#{Rails.root}/app/assets/javascripts/configuration.yml&quot; but when deploying the filename gets the digest string appended. 

How can I get the same path from a controller?

Access Asset Path from Rails Controller

I&#39;ve been transitioning an app to Rails 3.1 (and now on to 3.2) and watched the [Railscast on the asset pipeline][1]. I moved all of my third-party jquery plugin files to the /vendor/assets/javascripts/ directory. In my /app/assets/javascripts/application.js I have the following:

    //= require jquery
    //= require jquery_ujs
    //= require_tree .
    //= require_self

I realized the `require_tree .` call only loads the tree for the /app/assets/javascripts/ directory. (Is that correct?) What&#39;s the best way to include *all* the &quot;vendor&quot; javascripts? (I&#39;m not worried about ordering at this point.) Of course I could require them line by line in /app/assets/javascripts/application.js. My other thought was to create /vendor/assets/javascripts/vendor_javascripts.js with the following:

    //= require_tree .

And then in /app/assets/javascripts/application.js add the following:

    //= require vendor_javascripts

This seems a little clunky though. Is there a better way to automatically include all the &quot;vendor&quot; (and/or &quot;lib&quot;) javascripts? 

PS. I saw [this about index.js files][2], but I would potentially end up with multiple files named index.js, right? Oh, and I tried restarting my server throughout.


  [1]: http://railscasts.com/episodes/279-understanding-the-asset-pipeline
  [2]: http://guides.rubyonrails.org/asset_pipeline.html#using-index-files

Content Type	Original Author	Original Content on Stackoverflow
Question	kriysna	View Question on Stackoverflow
Solution 1 - Ruby on-Rails-3.1	shedd	View Answer on Stackoverflow
Solution 2 - Ruby on-Rails-3.1	Toby	View Answer on Stackoverflow
Solution 3 - Ruby on-Rails-3.1	rafamvc	View Answer on Stackoverflow

What does require_self mean?

Ruby on-Rails-3.1 Problem Overview

Ruby on-Rails-3.1 Solutions

Solution 1 - Ruby on-Rails-3.1

Solution 2 - Ruby on-Rails-3.1

Solution 3 - Ruby on-Rails-3.1

RabbitMQ use of immediate and mandatory bits

Powershell import-module doesn't find modules

Attributions