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In my plugin I have in admin menu function Media Organizations List. Here I get a list of all Organizations. There are 3 organizations types

  • affiliate
  • direct
  • bureau

The total list will get long. Therefor I need a custom hook to filter the 3 organization types to get a better view.

I have read several documents but not understand exact what to do.

Is there someone of you who can help me making this custom hook? It would be very helpful.

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First, register the filter hooks with the handy apply_filters tool:

function wpse_238394_org_types() {
    return apply_filters(
        "my_org_types",
        array( "affiliate", "direct", "bureau" )
    );
}

Now, wpse_238394_org_types() will return the default 3 types being not filtered yet, so we one more custom type:

add_filter("my_org_types", function($types) { 
    $types[] = "custom_type";
    return $types;
});

Now if you debug wpse_238394_org_types() it should be including the custom_type item along the defaults.

Hope that helps. Please also take a look at the docs https://developer.wordpress.org/plugins/hooks/creating-custom-hooks/ as jdm2112 suggested.

  • Thanks. Have add function wpse_238394_org_types() { into class List_Table_banner_affiliates extends WP_List_Table { But where to save add_filter("my_org_types", function($types) { ?? – Hermants Sep 7 '16 at 13:39
  • add_filter part can be used in a plugin, or in the child theme's functions file.. Just anywhere in your plugin e.g in the class init method. – Samuel Elh Sep 7 '16 at 13:42
  • add_filter part is added in my plugin. How do I get to see these filter options on my my-plugin/includes/affliates.php file? – Hermants Sep 7 '16 at 14:47
  • Whenever you call for the types use the function wpse_238394_org_types().. var_dump( wpse_238394_org_types() ) – Samuel Elh Sep 7 '16 at 17:03
  • I've got array(4) { [0]=> string(9) "affiliate" [1]=> string(6) "direct" [2]=> string(6) "bureau" [3]=> string(11) "custom_type" } ; Thats a start. But how to get this as filter at the top of the listing including that they indeed filter the listing as needed. Sorry but I am not familiar with this at all. And the docs do not give me a good help at all. – Hermants Sep 7 '16 at 17:15

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