Q&A

Migrating data between local and development server

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I’ve been working away at a medium-size WordPress site. So far I’ve just been hosting the site on my local machine and showing it to internal consultants over our local network. Things are working well, and now it’s time to show it off to the client. I’ve been using git all along, so pushing it to the dev server was a breeze. I duplicated the local DB and pushed it to the dev server manually, which was fairly easy except that I had to manually change a few URL entries.

Fatal error: Call to undefined function wp_get_current_user()

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I have some strange error or may be I do not have the skills to tackle this issue.
I am building a plugin for Multisite. When is use is_admin(), my plugin works fine but when I use is_super_admin it shows me this error Fatal error: Call to undefined function wp_get_current_user(). I did my search but could not be able to find any solution.

URL rewrites and pagination

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I must say that I am a complete nooby at WordPress custom URL rewrites. I have searched for past many days to find a clear explanation of how to determine and write correct pattern for URL rewrites. I have a custom page template that uses query var passed to it, e.g. http://example.com/pagename?user=username. In this “pagename” refers to the custom page template and “user” refers to the custom query var. I need this to be represented using the URL http://example.com/pagename/username.

Check if current category has subcategories

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I have found the following piece of code in the WP Knowledge Base theme in order to show subcategories of a parent category. The problem is that this only works for the first level of hierarchy, so I wanted to change the if clause in order to check if the current category has children but I have no clue how to do that, any idea?
Thanks