{"id":3136,"date":"2023-11-22T03:51:43","date_gmt":"2023-11-22T09:51:43","guid":{"rendered":"https:\/\/www.teamdesk.net\/blog\/?p=3136"},"modified":"2023-11-22T04:27:09","modified_gmt":"2023-11-22T10:27:09","slug":"file-type-validation-for-attachment-columns","status":"publish","type":"post","link":"https:\/\/www.teamdesk.net\/blog\/whats-new\/file-type-validation-for-attachment-columns\/","title":{"rendered":"File type validation for attachment columns"},"content":{"rendered":"\n<p>Today we added a simple yet effective option to enforce file type validation for <a href=\"https:\/\/www.teamdesk.net\/help\/columns\/editing-existing-columns\/file-attachment-columns\/\" target=\"_blank\" rel=\"noreferrer noopener\">attachment columns<\/a>. It&#8217;s quite useful for scenarios where column is expected to store certain file type (or class of types). <\/p>\n\n\n\n<p>For example, you may have the column intended to store the photo, thus you may want to restrict user&#8217;s selection to JPEG or PNG files only. Or column to store signed user agreements accepting PDF documents only. <\/p>\n\n\n\n<p>New option accepts the comma-separated list of file extensions that are valid for selection. <\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.teamdesk.net\/blog\/wp-content\/uploads\/2023\/11\/image-6.png\"><img loading=\"lazy\" decoding=\"async\" width=\"720\" height=\"99\" src=\"https:\/\/www.teamdesk.net\/blog\/wp-content\/uploads\/2023\/11\/image-6.png\" alt=\"File type validation options\" class=\"wp-image-3137\" srcset=\"https:\/\/www.teamdesk.net\/blog\/wp-content\/uploads\/2023\/11\/image-6.png 720w, https:\/\/www.teamdesk.net\/blog\/wp-content\/uploads\/2023\/11\/image-6-300x41.png 300w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/a><\/figure>\n\n\n\n<p>As long as <em>Valid File Types<\/em> list is specified, the browser restricts the selection to listed file types.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.teamdesk.net\/blog\/wp-content\/uploads\/2023\/11\/image-9.png\"><img loading=\"lazy\" decoding=\"async\" width=\"779\" height=\"443\" src=\"https:\/\/www.teamdesk.net\/blog\/wp-content\/uploads\/2023\/11\/image-9.png\" alt=\"File selection dialog with restricted set of file types\" class=\"wp-image-3140\" srcset=\"https:\/\/www.teamdesk.net\/blog\/wp-content\/uploads\/2023\/11\/image-9.png 779w, https:\/\/www.teamdesk.net\/blog\/wp-content\/uploads\/2023\/11\/image-9-300x171.png 300w, https:\/\/www.teamdesk.net\/blog\/wp-content\/uploads\/2023\/11\/image-9-768x437.png 768w\" sizes=\"auto, (max-width: 779px) 100vw, 779px\" \/><\/a><\/figure>\n\n\n\n<p>As some operating systems and browsers provide <a href=\"https:\/\/en.wikipedia.org\/wiki\/File_dialog\" target=\"_blank\" rel=\"noreferrer noopener\">the way to override<\/a> initial type selection, we perform an additional validation after the file is selected. In <em>Validation Message<\/em> property you can specify the text to display to the user when invalid file is selected. If not provided, we end up with generic message. <\/p>\n\n\n\n<p>Have a nice day!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Today we added a simple yet effective option to enforce file type validation for attachment columns. It&#8217;s quite useful for scenarios where column is expected to store certain file type or class of types, say spreadsheet files. <\/p>\n","protected":false},"author":4,"featured_media":3148,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[311,22],"class_list":["post-3136","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-whats-new","tag-file-type","tag-validation"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>File type validation for attachment columns - TeamDesk Blog<\/title>\n<meta name=\"description\" content=\"Today we added a file type validation for attachment columns. It&#039;s useful when column is expected to have only files of certain type.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.teamdesk.net\/blog\/whats-new\/file-type-validation-for-attachment-columns\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"File type validation for attachment columns - TeamDesk Blog\" \/>\n<meta property=\"og:description\" content=\"Today we added a file type validation for attachment columns. It&#039;s useful when column is expected to have only files of certain type.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.teamdesk.net\/blog\/whats-new\/file-type-validation-for-attachment-columns\/\" \/>\n<meta property=\"og:site_name\" content=\"TeamDesk Blog\" \/>\n<meta property=\"article:published_time\" content=\"2023-11-22T09:51:43+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-11-22T10:27:09+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.teamdesk.net\/blog\/wp-content\/uploads\/2023\/11\/file-type-validation-1.png\" \/>\n\t<meta property=\"og:image:width\" content=\"512\" \/>\n\t<meta property=\"og:image:height\" content=\"512\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Kirill Bondar\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Kirill Bondar\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.teamdesk.net\\\/blog\\\/whats-new\\\/file-type-validation-for-attachment-columns\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.teamdesk.net\\\/blog\\\/whats-new\\\/file-type-validation-for-attachment-columns\\\/\"},\"author\":{\"name\":\"Kirill Bondar\",\"@id\":\"https:\\\/\\\/www.teamdesk.net\\\/blog\\\/#\\\/schema\\\/person\\\/22c4c05bd657513c8b00122fa364c8d2\"},\"headline\":\"File type validation for attachment columns\",\"datePublished\":\"2023-11-22T09:51:43+00:00\",\"dateModified\":\"2023-11-22T10:27:09+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.teamdesk.net\\\/blog\\\/whats-new\\\/file-type-validation-for-attachment-columns\\\/\"},\"wordCount\":165,\"commentCount\":2,\"image\":{\"@id\":\"https:\\\/\\\/www.teamdesk.net\\\/blog\\\/whats-new\\\/file-type-validation-for-attachment-columns\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.teamdesk.net\\\/blog\\\/wp-content\\\/uploads\\\/2023\\\/11\\\/file-type-validation-1.png\",\"keywords\":[\"file type\",\"validation\"],\"articleSection\":[\"What's New\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.teamdesk.net\\\/blog\\\/whats-new\\\/file-type-validation-for-attachment-columns\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.teamdesk.net\\\/blog\\\/whats-new\\\/file-type-validation-for-attachment-columns\\\/\",\"url\":\"https:\\\/\\\/www.teamdesk.net\\\/blog\\\/whats-new\\\/file-type-validation-for-attachment-columns\\\/\",\"name\":\"File type validation for attachment columns - TeamDesk Blog\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.teamdesk.net\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.teamdesk.net\\\/blog\\\/whats-new\\\/file-type-validation-for-attachment-columns\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.teamdesk.net\\\/blog\\\/whats-new\\\/file-type-validation-for-attachment-columns\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.teamdesk.net\\\/blog\\\/wp-content\\\/uploads\\\/2023\\\/11\\\/file-type-validation-1.png\",\"datePublished\":\"2023-11-22T09:51:43+00:00\",\"dateModified\":\"2023-11-22T10:27:09+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/www.teamdesk.net\\\/blog\\\/#\\\/schema\\\/person\\\/22c4c05bd657513c8b00122fa364c8d2\"},\"description\":\"Today we added a file type validation for attachment columns. 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