[wp-hackers] Write a custom field to a new post via JS??

[scribu]

One of the problems is that the wp_postmeta table can't store negative ids.
That's why you're getting an id of 0.

Can't think of a good solution. Perhaps using add_option() instead, like
autosave does.


On Wed, Jan 6, 2010 at 10:02 PM, Matthew Gerring <mgerring at emrl.com> wrote:

> I found the temporary ID thing yesterday, and now I have my plugin set up
> so that it tries to use add_post_meta with the temporary post ID, but all it
> does is write the meta to the database once the post is published with an ID
> of 0. It works perfectly as long as the post has been assigned an ID.
>
> I looked through the write_post source, and I see what it's doing but I
> don't see it correcting the temporary IDs in post_meta. From admin-ajax.php
> it looks like when you add a custom field, WP creates the real ID and passes
> it back to the original post, but I'm not sure how to duplicate that
> functionality in my plugin.
>
> It would be better if I could just hook into the add-meta action in
> admin-ajax.php, but no matter how I construct the request it always returns
> -1.
>
> My code is here: http://wordpress.pastebin.com/m728fcfcf. It passes the
> temporary ID to the server just fine, and returns it back as successful, but
> WordPress doesn't find the postmeta when I go to save the post.
>
> Anyway. Hoping someone can help.
>
> Thanks,
> Matthew
>
> On Jan 5, 2010, at 3:12 PM, scribu wrote:
>
> > New posts are assigned a temporary id. See how it's used in the
> > wp_write_post() function:
> >
> >
> http://xref.yoast.com/trunk/nav.html?wp-admin/includes/post.php.source.html#l439
> >
> > Hope that helps.
> >
> >
> > On Tue, Jan 5, 2010 at 11:32 PM, Matthew Gerring <mgerring at emrl.com>
> wrote:
> >
> >> Hello all. I have a serious brain twister I hope you all can help me
> solve.
> >>
> >> I have an interface in the WordPress "add new post" screen, accessed via
> >> the media buttons. Basically what it's supposed to do is write an array
> to a
> >> custom field.
> >>
> >> It works fine if you're editing a post- I can pass the array to PHP
> along
> >> with the post ID and use add_post_meta(). But I don't know how to do the
> >> same thing if you're creating a new post, since there's no post ID to
> add a
> >> custom field to.
> >>
> >> Can anyone tell me how I would write metadata to a post that hasn't been
> >> published yet?
> >>
> >> -Matthew
> >>
> >>
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> >
> >
> >
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