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1. shinji251184
   Member
   Posted 5 months ago #

   This plugin is perfect to create new admin screens ;)
   There's a example of how to add a "builk action" (delete...) but I need to add a custom filter and I had some problem because I don't know how to put the code.

   Here is what I wrote. :
   

   function get_bulk_actions() {
     $actions = array(
     // I don't need to delete post in my case
     //'delete'    => 'Delete'
     );
   
     // Display date
     // For this example, I use a fonction in class-wp-liste-table.php
     // that display months (I use my own function to display months but this one works for the example)
     $this->months_dropdown('post');
     submit_button( __( 'Filter' ), 'secondary', false, false, array( 'id' => 'post-query-submit' ) );
   
     return $actions;
   }

   This code displays a drop-down list with months with a submit button.
   But when I submit, I have some url parameters (get) that shouldn't have to be there.

   admin.php?page=tt_list_test&_wpnonce=f008999aef&_wp_http_referer=%2Fwp-admin%2Fadmin.php%3Fpage%3Dtt_list_test

   _wpnonce & _wp_http_referer shouldn't have to be url parameters.

   And if I sort a column and change the month, it loses the order

   Order :
   /admin.php?page=tt_list_test&orderby=nom&order=desc
   =>
   Change date :
   /admin.php?page=tt_list_test&_wpnonce=f008999aef&_wp_http_referer=%2Fwp-admin%2Fadmin.php%3Fpage%3Dtt_list_test%26orderby%3Dnom%26order%3Ddesc&m=201111&paged=1

   Thank for your help.

   http://wordpress.org/extend/plugins/custom-list-table-example/

2. duck__boy
   Member
   Posted 4 months ago #

   I think that you need to add $this->months_dropdown() in the extra_tablenav() function.

3. shinji251184
   Member
   Posted 4 months ago #

   I tried what you say, but the problem was that in extra_tablenav, input are generated twice (and so the $_GET parameters, maybe I did it wrong) and I use a custom function to generate month (every months, not only months when posts are published).

   Here's a solution (I'm not sure if the code is in the right place) :

   function get_bulk_actions() {
       // function to generate month
       $this->month_select();
       return $actions;
   }

   So my <select> appears inside the <form> in the right place.

   And I wrote this code at the beginning of the plugin, under require(ABSPATH . '/wp-load.php');, to avoid url parameters trouble :

   require(ABSPATH . 'wp-includes/pluggable.php');
   
   if ( ! empty($_REQUEST['_wp_http_referer']) && $_REQUEST['page']=='tt_list_test') {
   $url_page_admin = stripslashes($_SERVER['REQUEST_URI']);
   wp_redirect( remove_query_arg( array('_wp_http_referer', '_wpnonce'), stripslashes($_SERVER['REQUEST_URI']) ) );
   exit;
   }

   And finaly, I add some input type="hidden" and put order and orderby value, that disapear with redirection :

   if ( ! empty( $_REQUEST['orderby'] ) )
                   echo '<input type="hidden" name="orderby" value="' . esc_attr( $_REQUEST['orderby'] ) . '" />';
               if ( ! empty( $_REQUEST['order'] ) )
                   echo '<input type="hidden" name="order" value="' . esc_attr( $_REQUEST['order'] ) . '" />';

4. Alex-A
   Member
   Posted 3 months ago #

   Hi There,

   I just had a 'WTF is going on session' for a couple of hours dealing with the same issue. I also had the same problem that my custom filter was generated twice when i used it.

   But! i've found the solution!! So i thought i would share it.

   First thing is that you DO need to use extra_tablenav() for adding extra custom filters.

   Now the reason WHY in that place the input is called twice, is because the extra_tablenav() generates the input twice ( at the top of the table and bottom ), so if you only provide one form or select field, the same parameter get called twice ( top / bottom ).

   And when putting out a request every input is collected and put out.

   To deal with that you have to provide a different input name for top and bottom, OR only put your filter at the top.

   Do this so, by using the extra_tablenav() on the following way:

   function extra_tablenav($which) {
   	if ( $which == "top" ){
   // GENERATE FILTER FOR TOP
   }
   	if ( $which == "bottom" ){
   // FILTER FOR BOTTOM
   }
   }

   But like i said, you also could only use one of them ( top bottom )

   Hope it helps someone!

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