How to show hierarchy in Drupal’s Solr Search Api Facets?

  • Go to admin/config/search/search_api/index/*your solr server*/workflow.
  • Check the box ‘Index Hierarchy’.
  • Select the taxonomy fields where you would like to apply the hierarchy.

Is Drupal’s l() function causing ‘operator not support for strings’?


Previously I was confronted with an error while simply using the Drupal l() function. In this l() function I was trying to give the HTML a-tag a specific class attribute value. The following code was in my module:

l(‘some url text’, ‘the-path-for-the-current-active-page’, array(‘attributes’ => array(‘class’ => ‘custom-class’)))

When calling the page containing the link from above, I received the ‘operator not supported for strings’ error. It seemed that the l() function that at default tried to set the class attribute ‘active’, was causing the error. By removing the parameter for setting the class attribute, the problem got solved. My link now looks like:

l(‘some url text’, ‘the-path-for-the-current-active-page’)

This doesn’t cause any errors anymore.

Why is the mtime added in my Drupal module’s .info file?


Since the Drupal Core update of version 7.34 all modules being updated contain an mtime text rule in the .info file.

This is caused by the Drupal core system.module file.

// Add the info file modification time, so it becomes available for
// contributed modules to use for ordering module lists.
$module->info[‘mtime’] = filemtime(dirname($module->uri) . ‘/’ . $module->name . ‘.info’);

How to remove branches in git that are no longer remote?


git fetch -p

This does the magic, and unmerged local branches will not be removed.

Creating aliasses in Linux


An alias in Linux gives you the possibility to shorten your command’s syntax.

For example, if you need to enter following code in your terminal to compile less code to css:

node less-watch-compiler.js less css

You can shorten this so you only need to enter the following code in your terminal:

less-watch-compiler less css

How do we do that? Simple, just follow the steps below:

  • Open /etc/profile in an editor
    • sudo nano /etc/profile
  • Add the following rule to your /etc/profile file
    • alias your-short-command-name=”the/command/directory/command parameter1 parameter2 …”
  • Exit and save your /etc/profile file
  • Execute “source /etc/profile”
  • That’s it

Based on the above example, I’ve added the next rule to /etc/profile:

alias less-watch-compiler=”node /Location/to/the/tool/Dead-Simple-LESS-Watch-Compiler/less-watch-compiler.js”

If everyone started to work together, money would just become unnecessary!


Money is by far the worst invention ever and everyone depends on it. Why? We now need money to evolve but is that really necessary?

Evolution is something that has always happened instinctively and eventually it’s the stronger one that survives. But how do you become stronger? Not by gathering money but by gathering strengths. And knowing that knowledge is a strength, why not leave money beside and let companies globally work together without exchanging that unnecessary object.

How to get the full taxonomy term level path in the url with autopath in Drupal 7.


If you want to show all levels of the taxonomy term in the path, you can simply enter the following to your taxonomy url pattern in admin/config/search/path/patterns