Automatically activate plugins after installation

[GaryJones]

Although discussed often, there wasn't a ticket that addressed the automatic activation of a plugin after we'd installed it.

I'm tempted not to check for current_user_can( 'activate_plugins' ) when doing it - this would allow administrators to remove access to the plugins page (or that capability at least), and still allow users on a multisite to install and have activated the required plugins for that theme.

[thomasgriffin]

I'm all for it. Would be nice if we can pull it into the current UI of the Plugin_Installer_Skin class and plugins_api. So after the "Plugin installed successfully" message we could have a "Plugin activated successfully" message.

[thomasgriffin]

Ok, the issue here with activate_plugin is that the plugin is not returning a valid header. I believe this has to do with the plugins cache, but placing wp_cache_flush() before activating the plugin (but after installing it) still is not allowing the plugin to automatically be activated after it is installed.

[thomasgriffin]

Breakthrough!!

[thomasgriffin]

You are going to like the new updates I'm going to push tomorrow :) It is a huge victory for this class - it truly makes it automatic. ;-)

[GaryJones]

Re-opening, so that a few more improvements can be made to the solution - see the notes on the commit.

[thomasgriffin]

I knew there were going to be issues. :) I finally made the breakthrough as I was about to go to bed, so I wanted to go ahead and push something so I wouldn't forget. I'll go in today and make those fixes.