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TGM Plugin Activation is a PHP library that allows you to easily require or recommend plugins for your WordPress themes (and plugins). It allows your users to install and even automatically activate plugins in singular or bulk fashion using native WordPress classes, functions and interfaces. You can reference pre-packaged plugins, plugins from t…

Merge pull request #244 from NateWr/deprecated_screen_icon_function

* Remove call to deprecated function screen_icon()
latest commit e61b32fc8b
Thomas Griffin authored

TGM Plugin Activation

Contributors: Thomas Griffin (@jthomasgriffin /, Gary Jones (Github: @GaryJones / Twitter: GaryJ)
Version: 2.4.0
Requires at least: 3.0.0
Tested up to: 3.9-beta1


TGM Plugin Activation is a PHP library that allows you to easily require or recommend plugins for your WordPress themes (and plugins). It allows your users to install and even automatically activate plugins in singular or bulk fashion using native WordPress classes, functions and interfaces. You can reference pre-packaged plugins, plugins from the WordPress Plugin Repository or even plugins hosted elsewhere on the internet.


  1. Drop the class file somewhere in your theme hierarchy.
  2. Add a require_once call within functions.php (or other theme file) referencing the class file.
  3. Create a function, hooked to tgmpa_register, that registers the plugin and configurations.

For steps 2 and 3, it is recommended you view, copy and paste the contents of example.php and amend to suit. The example.php file is a model for how you should include the class in your theme.

Some important things to note:

  1. With the require_once call, make sure to amend the path to the correct location within your theme.
  2. For plugins pulled from the .org repo, the source argument is optional. Otherwise it is required and should point to the absolute path for the plugin zips within your theme, or to a URL for zips elsewhere online.
  3. The $config variable holds an array of arguments that can be used to customize aspects of the class. If you define an absolute default path for packaged plugins, you do not need to specify the directory path for your pre-packaged plugin within the 'source' argument. You will only need to specify the zip file name.


See for current issues and for reporting bugs and enhancements.



  • All textdomain strings now made to tgmpa and remove all notices dealing with textdomain and translation issues.
  • The _get_plugin_basename_from_slug method now checks for exact slug matches to prevent issues with plugins that start with the same slug.
  • Commenting style now adjusted so it is easier to comment large chunks of code if necessary.
  • Plugins from an external source now properly say Private Repository in the list table output.
  • add_submenu_page has been changed to add_theme_page for better theme check compatibility.
  • Removed the use for parent_menu_slug and parent_menu_url for $config options (see above).
  • Nag messages can now be forced on via a new dismissable config property. When set to false, nag cannot be dismissed.
  • New config dismiss_msg used in conjunction with dismissable. If dismissable is false, then if dismiss_msg is not empty, it will be output at the top of the nag message.
  • Better contextual message for activating plugins - changed to "Activate installed plugin(s)" to "Begin activating plugin(s)".
  • Added cache flushing on theme switch to prevent stale entries from remaining in the list table if coming back to a theme with TGMPA.
  • TGMPA is now a singleton to prevent extra settings overrides.
  • Fixed bug with duplicating plugins if multiple themes/plugins that used TGMPA were active at the same time.
  • Added contextual message updates depending on WordPress version.
  • Better nag message handling. If the nag has been dimissed, don't even attempt to build message (performance enhancement).
  • Ensure class can only be instantiated once (instantion moved inside the class_exists check for TGMPA).
  • Change instances of admin_url to network_admin_url to add better support for MultiSite (falls back gracefully for non-MultiSite installs).
  • Updated much of the code to match WP Coding Standards (braces, yoda conditionals, etc.).
  • Myriads of other bug fixes and enhancements


  • Fixed API error when clicking on the plugin install row action link for an externally hosted plugin


  • Fixed nag message not working when nag_type string was not set (props @jeffsebring)


  • Fixed undefined index notice when checking for required plugins (props @jeffsebring)
  • Fixed bug where, during a bulk install, if the plugin was defined in the source as pre-packaged but also existed in the repo, it would erroneously pull the plugin from the repo instead (props @wpsmith)
  • Added ability to set nag type for the admin notice via 'nag_type' string (props @wpsmith)


  • Changed license to reflect GPL v2 or later (to be compatible with the WordPress repo)


  • Fixed bug (100%) with not loading class properly


  • Fixed bug with not finding class (reverted back to Plugin_Upgrader)


  • Improved sorting of plugins by sorting them by required/recommended (while still maintaining alphabetical order within each group)
  • Improved output of strings in nag messages
  • Added 2 new strings: install_link and activate_link to customize the text for the nag action links
  • Added new class: TGM_Plugin_Installer to prepare for must-use plugin support


  • Fixed bug that allowed users to click on the Install Plugins page when all the plugin installations and activations were already complete


  • Fixed bug that caused WordPress core upgrades to fail (WordPress doesn't check for including WP_Upgrader on core upgrades)


  • Fixed erroneous links for plugins linked to the WordPress Repo
  • Improved UI of plugins by listing them in WordPress' default table layout
  • Improved support for installing plugins if security credentials require FTP information
  • Improved support for MultiSite
  • Added 3 new classes (all extensions of existing WordPress classes): TGMPA_List_Table for outputting required/recommended plugins in a familiar table format, TGM_Bulk_Installer for bulk installing plugins and TGM_Bulk_Installer_Skin for skinning the bulk install process
  • Added extra defensive measures to prevent duplication of classes
  • Added ability to bulk install and bulk activate plugins
  • Added new config options: 'parent_menu_slug', 'parent_menu_url', 'is_automatic', and 'message'
  • Added new string: 'complete' (displayed when all plugins have been successfully installed and activated)
  • Added support for singular/plural strings throughout the library
  • Added permission checks to action links
  • Added new filter tgmpa_default_screen_icon to set the default icon for the plugin table page
  • Added new optional plugin parameters: 'version', 'force_activation', 'force_deactivation' and 'external_url'
  • Removed 'button' string (deprecated with use of plugins table)


  • Fixed nag not re-appearing if user switched themes and then re-activated the previous theme (UX improvement)


  • Fixed duplicate nag message on admin options pages
  • Fixed FTP nonce error when FTP credentials aren't defined in wp-config.php
  • Improved handling of failed FTP connections with WP_Filesystem
  • Improved string labeling for semantics
  • Improved nag messages so that they are now consolidated into one message
  • Improved plugin sorting by listing them alphabetically
  • Improved plugin messages after installation and activation
  • Added automatic activation of plugins after installation (users no longer need to click the "Activate this plugin" link)
  • Added links to repo plugins for their plugin details and information (done via thickbox)
  • Added option to dismiss nag message
  • Added tgmpa_notice_action_links filter hook to filter nag message action links
  • Added new methods: admin_init(), thickbox(), dismiss(), populate_file_path(), _get_plugin_data_from_name() and is_tgmpa_page()


  • Improved nag messages by adding a strings argument to filter default messages
  • Improved nag message output by using the Settings API
  • Improved internals by adding API for developers to use (code in class no longer has to be touched)
  • Improved API function name (now tgmpa) for semantics
  • Improved example.php with instructions for setup
  • Added internal style sheet for styling
  • Added ability to define custom text domain for localization
  • Added new properties $default_path and $strings
  • Added new methods register(), config(), _get_plugin_basename_from_slug() and actions()
  • Removed unnecessary is_wp_error() check


  • Improved property $args to accept arrays of arguments for each plugin needed
  • Improved add_submenu_page to add_theme_page
  • Improved admin notices to display different messages based on status of plugin (not installed, installed but not activated)
  • Improved block-level documentation
  • Improved handling of plugin installation and activation with plugins_api, Plugin_Upgrader and Plugin_Skin_Installer
  • Added support for multiple plugins of each instance (pre-packaged and repo)
  • Added new property $domain to hold textdomain for internationalization
  • Added CSS for slight UI enhancements
  • Added extra conditional checks current_user_can( 'install_plugins' ) and current_user_can( 'activate_plugins' ) for security
  • Removed menu display if all included plugins were successfully installed and activated
  • Removed unnecessary conditional check before class is defined


  • Initial release into the wild
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