63 lines
2.2 KiB
Markdown
63 lines
2.2 KiB
Markdown
---
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title: Create an Omega Subtheme with LESS CSS Preprocessor using Omega Tools and Drush
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date: 2012-04-16
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excerpt: How to create an Omega subtheme on the command line using Drush.
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tags:
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- drupal
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- drupal-7
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- drupal-planet
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- less
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- omega
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- theming
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---
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In this tutorial I'll be showing how to create an
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[Omega](http://drupal.org/project/omega) subtheme using the
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[Omega Tools](http://drupal.org/project/omega_tools) module, and have it working
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with the [LESS CSS preprocessor](http://lesscss.org).
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The first thing that I need to do is download the Omega theme and the Omega
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Tools and [LESS](http://drupal.org/project/less 'LESS module on drupal.org')
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modules, and then to enable both modules. I'm doing this using Drush, but you
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can of course do this via the admin interface at admin/modules.
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```bash
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$ drush dl less omega omega_tools;
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$ drush en -y less omega_tools
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```
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With the Omega Tools module enabled I get the drush omega-subtheme command that
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creates my Omega subtheme programatically. Using this command, I'm creating a
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new subtheme, enabling it and setting it as the default theme on my site.
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```bash
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$ drush omega-subtheme "Oliver Davies" --machine_name="oliverdavies" --enable --set-default
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```
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By default, four stylesheets are created within the subtheme's css directory.
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The first thing that I'm going to do is rename `global.css` to `global.less`.
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```bash
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$ mv css/global.css css/global.less
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```
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Now I need to find all references to global.css within my oliverdavies.info
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file. I did this using `$ nano oliverdavies.info`, pressing `Ctrl+W` to search,
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then `Ctrl+R` to replace, entering `global.css` as the search phrase, and then
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`global.less` as the replacement text. After making any changes to
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oliverdavies.info, I need to clear Drupal's caches for the changes to be
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applied.
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```bash
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$ drush cc all
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```
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I tested my changes by making some quick additions to my global.less file and
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reloading the page.
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If your changes aren't applied, then confirm that your global.less file is
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enabled within your theme's configuration. I did this by going to
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admin/appearance/settings/oliverdavies, clicking on the Toggle styles tab within
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_Layout configuration_ and finding global.less at the bottom of _Enable optional
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stylesheets_.
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