Really stupid newbie question:
I'm writing a very simple plugin to add a meta box to the Edit Post panel, based on the example code at
http://codex.wordpress.org/Function_Reference/add_meta_box
I need to get the post ID inside the function that draws the contents of the meta box, ( named 'myplugin_inner_custom_box()' in the example) so I can have checkboxes checked or not-checked based on saved custom meta values for the post.
Anyone any tips?
Cheers,
a|x
OK, got it, thanks:
global $post;
$post_id = $post->ID;a|x
Posted 1 year ago #
Note this part on the codex page..
$callback_args
(array) (optional) Arguments to pass into your callback function. The callback will receive the $post object and whatever parameters are passed through this variable.Default: null
So bearing that in mind, update this..
function myplugin_inner_custom_box() {to..
function myplugin_inner_custom_box( $post ) {..and $post will contain what you'd assume it does.. ;)
Great, thanks Mark!
a|x
I must say I'm still a bit confused about what variables are available at any given point.
a|x
Posted 1 year ago #
It depends what your callback function is hooked onto, every hook in WordPress passes along differing data to the callback functions, some pass on 1 variable(string/array/object), others as many as 4 or 5, it's down to the given hook(there's no universal answer).
Thanks Mark. Sorry if this is a stupid questions, but is there a single place where all the hooks and filters and their variables are documented? Or is it just a case of digging around in the sourcecode?
a|x
Since I'm not sure if Mark is around - quick answer... Some are documented but I personally find it much easier to dive into the source code which usually includes some very basic documentation.
Thanks. TextWrangler's Multi-File find is my friend :D
a|x
Posted 1 year ago #
There's a list of action and filter hooks on the following pages.
http://codex.wordpress.org/Plugin_API/Action_Reference
http://codex.wordpress.org/Plugin_API/Filter_Reference
And a general overview of hooks, actions/filter, and what not, can be found here.
http://codex.wordpress.org/Plugin_API
I also answered a filter/action related question recently which may help broaden your understanding(bearing in mind i'm not the greatest teacher, it may help all the same).
http://wordpress.org/support/topic/add_action-function-values
I'm always around, just briefly sometimes.. ;)
Thanks for all your help guys. I've actually produced a couple of WP plugins in the past, but (like many I suppose), I tend to jump in at the deepend with these coding projects, and I'm still a bit shaky on some of the basics. I'm sure I've been doing some really stupid things, so your advice and encouragement is much appreciated.
Cheers,
a|x
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