[wp-hackers] Plugin to update all posts in a category

Callum Macdonald lists.automattic.com at callum-macdonald.com
Mon Feb 26 07:43:24 GMT 2007


Hi Aaron,

Thanks for the speedy response, wp_dropdown_categories appears to be 
exactly what I'm after.

Cheers,


Callum.

Aaron Brazell wrote:
>
>
> On Feb 25, 2007, at 11:20 PM, Callum Macdonald wrote:
>
>> G'day,
>>
>> I'm working on a plugin to update the custom fields of an entire 
>> category of posts in one go.
>>
>> For example, I have a category called photos to which I add all posts 
>> that have photos. If I wanted to add a new tag to these posts (stored 
>> in a custom field) then I'd go to my plugin page, select the 
>> category, and choose the option, "add a tag to this category".
>>
>> I'm having a few challenges that I'd appreciate any pointers on.
>>
>> 1) I'd like to list the categories as a drop down menu, so one can be 
>> selected, with the category id as the value. I''m looking at the 
>> wp_list_categories function, but I don't think that's what I want.
>
> wp_dropdown_categories() perhaps?
>
>>
>> 2) I want to get a list of all the post ids from a single category. 
>> Again I'm looking at template tags, but I'm sure there must be a 
>> better way.
>
> get_posts('category=x') ... where x is the cat_ID?
>
>>
>> 3) I plan to use a foreach loop to circle through each post and then 
>> use the update_post_meta() function. Any feedback on this approach 
>> would be great.
>
> No feedback. It seems reasonable enough to me... Good luck!
>
>
>
> Aaron
>
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