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Available Hooks
=============
The following is a list of all hooks present in NodeBB. This list is intended to guide developers who are looking to write plugins for NodeBB. For more information, please consult :doc:`Writing Plugins for NodeBB <create>`.
There are two types of hooks, **filters**, and **actions**. Filters take an input (provided as a single argument), parse it in some way, and return the changed value. Actions take multiple inputs, and execute actions based on the inputs received. Actions do not return anything.
**Important**: This list is by no means exhaustive. Hooks are added on an as-needed basis (or if we can see a potential use case ahead of time), and all requests to add new hooks to NodeBB should be sent to us via the `issue tracker <https://github.com/NodeBB/NodeBB/issues>`_.
Filters
----------
``filter:admin.header_build``
^^^^^^^^^^^^^^^^^^^^^
Allows plugins to create new navigation links in the ACP
``filter:post.save``
^^^^^^^^^^^^^^^^^^^^^
**Argument(s)**: A post's content (markdown text)
Executed whenever a post is created or edited, but before it is saved into the database.
``filter:post.get``
^^^^^^^^^^^^^^^^^^^^^
**Argument(s)**: A post object (javascript Object)
Executed whenever a post is retrieved, but before being sent to the client.
``filter:header.build``
^^^^^^^^^^^^^^^^^^^^^
**Allows plugins to add new navigation links to NodeBB**
``filter:register.build``
^^^^^^^^^^^^^^^^^^^^^
**Argument(s)**:
- `req` the express request object (javascript Object)
- `res` the express response object (javascript Object)
- `data` the data passed to the template (javascript Object)
**Allows plugins to add new elements to the registration form. At the moment, the only one supported is `data.captcha`**
``filter:post.parse``
^^^^^^^^^^^^^^^^^^^^^
**Argument(s)**: A post or signature's raw text (String)
Executed when a post or signature needs to be parsed from raw text to HTML (for output to client). This is useful if you'd like to use a parser to prettify posts, such as `Markdown <http://daringfireball.net/projects/markdown/>`_, or `BBCode <http://www.bbcode.org/>`_.
``filter:posts.custom_profile_info``
^^^^^^^^^^^^^^^^^^^^^
**Allows plugins to add custom profile information in the topic view's author post block**
``filter:register.check``
^^^^^^^^^^^^^^^^^^^^^
**Argument(s)**:
- `req` the express request object (javascript Object)
- `res` the express response object (javascript Object)
- `userData` the user data parsed from the form
**Allows plugins to run checks on information and deny registration if necessary.**
``filter:scripts.get``
^^^^^^^^^^^^^^^^^^^^^
**Allows to add client-side JS to the header and queue up for minification on production**
``filter:uploadImage``
^^^^^^^^^^^^^^^^^^^^^
``filter:uploadFile``
^^^^^^^^^^^^^^^^^^^^^
``filter:widgets.getAreas``
^^^^^^^^^^^^^^^^^^^^^
``filter:widgets.getWidgets``
^^^^^^^^^^^^^^^^^^^^^
``filter:search.query``
^^^^^^^^^^^^^^^^^^^^^
``filter:post.parse``
^^^^^^^^^^^^^^^^^^^^^
``filter:messaging.parse``
^^^^^^^^^^^^^^^^^^^^^
``filter:sounds.get``
^^^^^^^^^^^^^^^^^^^^^
``filter:post.getPosts``
^^^^^^^^^^^^^^^^^^^^^
``filter:post.getFields``
^^^^^^^^^^^^^^^^^^^^^
``filter:auth.init``
^^^^^^^^^^^^^^^^^^^^^
``filter:composer.help``
^^^^^^^^^^^^^^^^^^^^^
``filter:topic.thread_tools``
^^^^^^^^^^^^^^^^^^^^^
``filter:user.create``
^^^^^^^^^^^^^^^^^^^^^
``filter:user.profileLinks``
^^^^^^^^^^^^^^^^^^^^^
``filter:user.verify.code``
^^^^^^^^^^^^^^^^^^^^^
Parameters: confirm_code
Ability to modify the generated verification code (ex. for using a shorter verification code instead for SMS verification)
``filter:user.custom_fields``
^^^^^^^^^^^^^^^^^^^^^
Parameters: userData
Allows you to append custom fields to the newly created user, ex. mobileNumber
``filter:register.complete``
^^^^^^^^^^^^^^^^^^^^^
Parameters: uid, destination
Set the post-registration destination, or do post-register tasks here.
``filter:widget.render``
^^^^^^^^^^^^^^^^^^^^^
Actions
----------
``action:app.load``
^^^^^^^^^^^^^^^^^^^^^
**Argument(s)**: None
Executed when NodeBB is loaded, used to kickstart scripts in plugins (i.e. cron jobs, etc)
``action:page.load``
^^^^^^^^^^^^^^^^^^^^^
**Argument(s)**: An object containing the following properties:
* ``template`` - The template loaded
* ``url`` - Path to the page (relative to the site's base url)
``action:plugin.activate``
^^^^^^^^^^^^^^^^^^^^^
**Argument(s)**: A String containing the plugin's ``id`` (e.g. ``nodebb-plugin-markdown``)
Executed whenever a plugin is activated via the admin panel.
**Important**: Be sure to check the ``id`` that is sent in with this hook, otherwise your plugin will fire its registered hook method, even if your plugin was not the one that was activated.
``action:plugin.deactivate``
^^^^^^^^^^^^^^^^^^^^^
**Argument(s)**: A String containing the plugin's ``id`` (e.g. ``nodebb-plugin-markdown``)
Executed whenever a plugin is deactivated via the admin panel.
**Important**: Be sure to check the ``id`` that is sent in with this hook, otherwise your plugin will fire its registered hook method, even if your plugin was not the one that was deactivated.
``action:post.save``
^^^^^^^^^^^^^^^^^^^^^
**Argument(s)**: A post object (javascript Object)
Executed whenever a post is created or edited, after it is saved into the database.
``action:email.send``
^^^^^^^^^^^^^^^^^^^^^
``action:post.setField``
^^^^^^^^^^^^^^^^^^^^^
``action:topic.edit``
^^^^^^^^^^^^^^^^^^^^^
``action:post.edit``
^^^^^^^^^^^^^^^^^^^^^
``action:post.delete``
^^^^^^^^^^^^^^^^^^^^^
``action:post.restore``
^^^^^^^^^^^^^^^^^^^^^
``action:notification.pushed``
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
**Argument(s)**: A notification object (javascript Object)
Executed whenever a notification is pushed to a user.
``action:config.set``
^^^^^^^^^^^^^^^^^^^^^
``action:topic.save``
^^^^^^^^^^^^^^^^^^^^^
``action:user.create``
^^^^^^^^^^^^^^^^^^^^^
``action:topic.delete``
^^^^^^^^^^^^^^^^^^^^^
``action:user.verify``
^^^^^^^^^^^^^^^^^^^^^
Parameters: uid; a hash of confirmation data (ex. confirm_link, confirm_code)
Useful for overriding the verification system. Currently if this hook is set, the email verification system is disabled outright.
``action:user.set``
^^^^^^^^^^^^^^^^^^^^^
Parameters: field (str), value, type ('set', 'increment', or 'decrement')
Useful for things like awarding badges or achievements after a user has reached some value (ex. 100 posts)
``action:settings.set``
^^^^^^^^^^^^^^^^^^^^^
Parameters: hash (str), object (obj)
Useful if your plugins want to cache settings instead of pulling from DB everytime a method is called. Listen to this and refresh accordingly.
Client Side Hooks
--------------------
``filter:categories.new_topic``
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
``action:popstate``
^^^^^^^^^^^^^^^^^^^
``action:ajaxify.start``
^^^^^^^^^^^^^^^^^^^
``action:ajaxify.loadingTemplates``
^^^^^^^^^^^^^^^^^^^
``action:ajaxify.loadingData``
^^^^^^^^^^^^^^^^^^^
``action:ajaxify.contentLoaded``
^^^^^^^^^^^^^^^^^^^
``action:ajaxify.end``
^^^^^^^^^^^^^^^^^^^
``action:reconnected``
^^^^^^^^^^^^^^^^^^^
``action:connected``
^^^^^^^^^^^^^^^^^^^
``action:disconnected``
^^^^^^^^^^^^^^^^^^^
``action:categories.loading``
^^^^^^^^^^^^^^^^^^^
``action:categories.loaded``
^^^^^^^^^^^^^^^^^^^
``action:categories.new_topic.loaded``
^^^^^^^^^^^^^^^^^^^
``action:topic.loading``
^^^^^^^^^^^^^^^^^^^
``action:topic.loaded``
^^^^^^^^^^^^^^^^^^^
``action:composer.loaded``
^^^^^^^^^^^^^^^^^^^
``action:widgets.loaded``
^^^^^^^^^^^^^^^^^^^