{"id":4158518,"date":"2013-09-24T16:41:38","date_gmt":"2013-09-24T16:41:38","guid":{"rendered":"https:\/\/wordpress.org\/support\/topic\/filters-example\/"},"modified":"2016-08-21T05:27:30","modified_gmt":"2016-08-21T05:27:30","slug":"filters-example","status":"closed","type":"topic","link":"https:\/\/wordpress.org\/support\/topic\/filters-example\/","title":{"rendered":"Filters example"},"content":{"rendered":"<p>I&#8217;ve already seen <a href=\"https:\/\/github.com\/mboynes\/super-cpt\/wiki\/Actions-and-Filters\">this page<\/a> about your filters and actions  but there aren&#8217;t any examples. Could you give me any directions on how to use this filter (scpt_plugin_{$this-&gt;type}_meta_save_{$field}) for example? <\/p>\n<p>I&#8217;m trying to use like this:<\/p>\n<pre><code>$superCustomCPT = new Super_Custom_Post_Type(&#039;mycustomcpt&#039;);\n$superProductCPT = new Super_Custom_Post_Type(&#039;product&#039;);\n        $superProductCPT-&gt;add_meta_box(array(\n            &#039;id&#039; =&gt; &#039;attribute_groups&#039;,\n            &#039;title&#039; =&gt; &#039;My title&#039;,\n            &#039;fields&#039; =&gt; array(\n                &#039;prod_attribute_groups&#039; =&gt; array( &#039;type&#039; =&gt; &#039;checkbox&#039;, &#039;label&#039; =&gt; false, &#039;data&#039; =&gt; &#039;mycustomcpt&#039;, &#039;multiple&#039; =&gt; &#039;multiple&#039; )\n            )\n        ));\n\nfunction test($test){\n            _log(&#039;asdasd&#039;);\n            _log(print_r($test,true));\n        }\n        add_filter(&#039;scpt_plugin_product_meta_save_attribute_groups&#039;,&#039;test&#039;);<\/code><\/pre>\n<p>But this error is showing up: Undefined index: &#8216;attribute_groups&#8217;<\/p>\n<p>https:\/\/wordpress.org\/plugins\/super-cpt\/<\/p>\n","protected":false},"template":"","class_list":["post-4158518","topic","type-topic","status-closed","hentry"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic\/4158518","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic"}],"about":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic\/4158518\/revisions"}],"wp:attachment":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/media?parent=4158518"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}