48 lines
2.3 KiB
Markdown
48 lines
2.3 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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slug: create-omega-subtheme-less-css-preprocessor-using-omega-tools-and-drush
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tags:
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- drupal-7
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- omega
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- theming
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- less
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- drupal-planet
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- drupal
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use: [posts]
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---
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{% block excerpt %}
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In this tutorial I'll be showing how to create an [Omega](http://drupal.org/project/omega) subtheme using the [Omega Tools](http://drupal.org/project/omega_tools) module, and have it working 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 Tools and [LESS](http://drupal.org/project/less "LESS module on drupal.org") modules, and then to enable both modules. I'm doing this using Drush, but you can of course do this via the admin interface at admin/modules.
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{% endblock %}
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{% block content %}
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```language-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 creates my Omega subtheme programatically. Using this command, I'm creating a new subtheme, enabling it and setting it as the default theme on my site.
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```language-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. The first thing that I'm going to do is rename `global.css` to `global.less`.
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```language-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 file. I did this using `$ nano oliverdavies.info`, pressing `Ctrl+W` to search, then `Ctrl+R` to replace, entering `global.css` as the search phrase, and then `global.less` as the replacement text. After making any changes to oliverdavies.info, I need to clear Drupal's caches for the changes to be applied.
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```language-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 reloading the page.
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If your changes aren't applied, then confirm that your global.less file is enabled within your theme's configuration. I did this by going to admin/appearance/settings/oliverdavies, clicking on the Toggle styles tab within *Layout configuration* and finding global.less at the bottom of *Enable optional stylesheets*.
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{% endblock %}
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