uploads - Read For Learn

Prevent image upload unless exact size

Haven’t tested it, but this should work: // check for file upload size // { if( !current_user_can( ‘administrator’) ) add_filter( ‘wp_handle_upload_prefilter’, ‘mdu_validate_image_size’ ); } add_filter(‘wp_handle_upload_prefilter’,’mdu_validate_image_size’); function mdu_validate_image_size( $file ) { if ( mime_content_type($file) == ‘application/zip’ ) { mdu_validate_zip_image_size($file); return $file; } $image = getimagesize($file[‘tmp_name’]); $minimum = array( ‘width’ => ‘800’, ‘height’ => ‘450’ ); $maximum … Read more

Saving the pre-sanitized filename of an attachment as the Title or Caption

Unfortunately wp_handle_upload_prefilter hook does not recognize an attachment ID yet. It’s too early and runs the pre-sanitized file name (before moving the attachment and storing it as a post) The Logic What you can do is use that hook wp_handle_upload_prefilter but instead, store a transient with a short life that contains the pre-sanitized file name. … Read more

Thickbox hacking – removing fields

Tricky but once you understand how WordPress sets the sizes and the fields then the rest is easy: function thickbox_fields($form_fields, $post){ unset( $form_fields[‘post_title’], //disables “Title” field and so forth… $form_fields[‘url’], $form_fields[‘image_alt’], $form_fields[‘post_excerpt’], $form_fields[‘post_content’], $form_fields[‘align’], $form_fields[‘image-size’] ); //create the size input for full only and set display to none $size=”full”; $css_id = “image-size-{$size}-{$post->ID}”; $html = “<div … Read more

Set custom upload path for custom post type only?

You can add a filter to upload_dir. Here is a simple class I wrote to do this for a project. Use the protected $filter_path variable to define the alternate uploads directory (*will be relative to wp-content/uploads) class UGC_Attachment { protected $upload_dir; protected $upload_url; protected $filter_path=”/relative_path_from_wp-content/uploads”; function __construct() { $dir = wp_upload_dir(); $this->upload_dir = $dir[‘basedir’] . … Read more

hook into completed image upload filter

WordPress’ media handling strikes me as scattered and inconsistent. I say that only to say that I can’t promise this will work in all cases. However, I think I’d use the add_attachment hook from wp_insert_attachment. You will get a post ID, so you will have to … retrieve the image src with wp_get_attachment_imge_src, probably, retrieve … Read more

Why are double-periods (“..”) invalid in a WordPress image filename?

Looks like this is a defect. Ish. As @s_ha_dum mentioned, this is to prevent a directory traversal attack. However, WordPress’ Media Library will happily let you upload a file with two or more periods in a row, even if ms-files.php will refuse to serve it up. So, nothing is technically “broken”, but this certainly isn’t … Read more

What’s the database relationship between a post and its attachments

The post that an attachment is related to is determined by the post_parent column on the wp_posts table (depending on your database prefix). Set it to the post_ID of the parent post.

How to upload images manually to wordpress?

I haven’t tested this in multi-site but can’t see any reason that it wouldn’t work. The Add from Server plugin searches for images that you manually upload to WordPress and adds them to the media manager. You can find it here: http://wordpress.org/extend/plugins/add-from-server/ Tested on the latest WordPress.

How can I have network sites not use year/month folders by default?

You could just change the option after the blog is created: add_action(‘wpmu_new_blog’, function($blog_id){ switch_to_blog($blog_id); update_option(‘uploads_use_yearmonth_folders’, false); restore_current_blog(); }); Drop this code into a .php file inside wp-content/mu-plugins

Organize uploaded media files

Thans but I’ve found the solution, what it need to do is to edit the site (Network -> Sites -> Edit -> Settings ) and change the following parameters: Uploads Use Yearmonth Folders 0 Upload Path wp-content/blogs.dir/1/uploads Fileupload Url http://www.mydomain.com/myblog/uploads

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