vb.org Archive - plugin question- how to override code in a hook location

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plugin question- how to override code in a hook location

So I'm now to using plugins in place of direct php file edits. I have code I want to put into a hook location but I need to execute my code and NOT execute the existing code... for example I make a pligin in: example_hook_location
My code is:

PHP Code:


		
			
$x = 5;

But the existing code in the php file where the hook is:

PHP Code:


		
			
$x = 6;

When I add my code via the plugin the result is basically:

PHP Code:


		
			
$x = 5;

$x = 6;

Which leaves x with the same value of '6' as if my code never ran to begin with. How do I get around this? It seems like this would be a common issue when using plugins.

--------------- Added [DATE]1277949347[/DATE] at [TIME]1277949347[/TIME] ---------------

In more detail what I want to do is "If" something is true use my custom code for a query, otherwise (if false) use the existing code... One of the hook locations I want to do this with is:
forumdisplay_query_threadscount

I'd be much obliged for pointers on how to do this, I read an article on plugins but it was very old and couldn't find much dealing with my issue in the search.

I know this is probably something you've looked at already, but are you able to define the variable at a later hook to override the previous variable?

If not, why not just add another hook in the location? This seems the easiest method...

You would mist likely have to replicate the query from the file in your plugin and use your variable with that. No way to do what you are asking that I am aware of, unless you could do it in a later hook.

Or just add:

PHP Code:


		
			
($hook = vBulletinHook::fetch_hook('hook_name')) ? eval($hook) : false;

into the file, then add:

Code:

<hook>hook_name</hook>

into hooks_vbulletin.xml (includes/xml) under whichever category it fits best, probably forumdisplay.

Code:

<hooktype type="forumdisplay">

                <hook>forumdisplay_start</hook>

                <hook>forumdisplay_moderator</hook>

                <hook>forumdisplay_loggedinuser</hook>

                <hook>forumdisplay_announcement_query</hook>

                <hook>forumdisplay_announcement</hook>

                <hook>forumdisplay_sort</hook>

                <hook>forumdisplay_query_threadscount</hook>

                <hook>forumdisplay_query_threadid</hook>

                <hook>forumdisplay_query</hook>

                <hook>forumdisplay_complete</hook>

        </hooktype>

(insert under bold)

That kind of defeats the purpose of using plugin hooks. Why not just do the code in the file? You would have to re-do it on an upgrade anyway.

Because by putting in a plugin hook all he is doing is creating a way of accessing the variable, he can disable/enable the plugin at his will.

And he still needs to re-do the files on every upgrade. 6 to 1, a half dozen to the other.

Thanks for the ideas... I guess it's not worth doing if I have to make another hook location because the code edits aren't that hard, I just thought maybe I could make the edits via hooks so i could release a product file instead of manual changes for a mod I made.

Oh well... at least (i think) I've figured out how hooks work for future mods.

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