Posted 6 years ago #
With the new image uploader/browser is the database aware of the fact that I've placed an image in a post?
I want to know because I've just re-uploaded all my images through the WP2 image uploader and then manually changed the links in all my posts.
If it is the case the database is aware then I'll re-post the images to each article using the browser instead.
Posted 6 years ago #
In WordPress 2, images (or other files) uploaded through the upload tool in the post editor are added to the database* under the posts table and assigned a post status of 'attachment'. When editing a particular post uploads at that time will be "attached" to that post (they are assigned as the 'post_parent' of an attachment), but it's not some sort of requirement that the image be attached to the post it's displayed with.
* Images are not *actually* added to the database; just a few important bits of data about them.
Posted 6 years ago #
Okay, thanks. Do you know what purpose 'post_parent' serves, if any at this point? More broadly, will anything break if posted images do not have a post_parent?
And, more specifically, if I change my URI from mydomain.com/blog to mydomain.com/ will anything get broken, since my images are linked manually.
Posted 6 years ago #
Offhand I know of little internally which cares about the post_parent on an attachment except the post admin and rewrite (permalink) rules.
Images/files show under Browse for the post they're attached to instead of Browse All, so there's a bit of organization value to it.
With rewrite rules when using anything other than the default permalink you can do this:
Post:
http://guff.szub.net/2006/01/29/woof
Attachment:
http://guff.szub.net/2006/01/29/woof/fire-dog
Though at this point I'm not sure how useful it is. :)
As for the rest, an image correctly linked to in a post should display. If the directory structure remains the same (i.e. wp-content/uploads or whatever), moving your blog up a directory should not affect the internal stuff on the attachment, but the link or image reference to it in a post will be affected if your image director(y|ies) move along with it. This would be the case with or without an "attachment" feature.
Posted 6 years ago #
Thanks for the comprehensive response Kafkaesqui.
Posted 6 years ago #
Okay, I get the above.
My problem is that I have a db entry for an image, a physical image and a physical thumbnail with the exact same rights and naming convention as my other images. But it still shows a line through 'No Thumbnail' when I try to add it to the post. It shows up when editing the post_parent and all.
I found out that an image of 523K does get resized correctly but my other image (700+ K) fails. If I resize it to a somewhat more modest scale it works fine.
Is the image thumbnail also database aware?
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