Title: Filter Last modified: August 21, 2016 --- # Filter * Resolved [Andrew Leonard](https://wordpress.org/support/users/andrewleonard/) * (@andrewleonard) * [11 years, 11 months ago](https://wordpress.org/support/topic/filter-8/) * You showed me how to write a filter to wrap code around the table cells What I want to do is take a value from row1 and update row 3 with it This is the code I came up with but it does not work – do you know why? * ``` //***Custom TablePress Table 60**/ add_filter( 'tablepress_cell_content', 'Table60', 10, 4 ); function Table60( $tablepress_cell_content, $table_id, $row_number, $column_number ) { if ($table_id==60) { if ($row_number!=1) { if ($column_number==1) { global $fernname; $temp1=strip_tags($tablepress_cell_content); $fernname=str_replace(" ","_",$temp1); } if ($column_number==3) { $tablepress_cell_content=$fernname; } } } return $tablepress_cell_content; } ``` * _[Moderator Note: Please post code & markup between backticks or use the code button. Your posted code may now have been damaged by the forum’s parser.]_ * [https://wordpress.org/plugins/tablepress/](https://wordpress.org/plugins/tablepress/) Viewing 8 replies - 1 through 8 (of 8 total) * Plugin Author [Tobias Bäthge](https://wordpress.org/support/users/tobiasbg/) * (@tobiasbg) * [11 years, 11 months ago](https://wordpress.org/support/topic/filter-8/#post-5046078) * Hi Andrew, * thanks for your question, and sorry for the trouble. * You’ll just have to add `global $fernname;` in the second if-condition (for the 3) as well (or move it to the top of the function). * Regards, Tobias * Thread Starter [Andrew Leonard](https://wordpress.org/support/users/andrewleonard/) * (@andrewleonard) * [11 years, 11 months ago](https://wordpress.org/support/topic/filter-8/#post-5046088) * Ahhhh I nearly got there… Thanks It works now * Thread Starter [Andrew Leonard](https://wordpress.org/support/users/andrewleonard/) * (@andrewleonard) * [11 years, 11 months ago](https://wordpress.org/support/topic/filter-8/#post-5046094) * Ugh It is not working quite as I expected! You can see here: [http://ebps.org.uk/ferns-2/indentification/hectad-page-v2/](http://ebps.org.uk/ferns-2/indentification/hectad-page-v2/) I was expecting it to store the contents of column 1 and put it into column 3 of the same row, but it seems to be putting the contents of column one from the next row into column 3? * Plugin Author [Tobias Bäthge](https://wordpress.org/support/users/tobiasbg/) * (@tobiasbg) * [11 years, 11 months ago](https://wordpress.org/support/topic/filter-8/#post-5046102) * Hi, * ah, yes… The reason or this is how the table is rendered. The rendering basically starts in the last row (because TablePress needs to check for keywords like `# rowspan#` and `#colspan#` from the bottom up. * The best approach here should therefore be to use a different filter hook, like` tablepress_table_render_data`, and loop through the table array there. * Regards, Tobias * Thread Starter [Andrew Leonard](https://wordpress.org/support/users/andrewleonard/) * (@andrewleonard) * [11 years, 11 months ago](https://wordpress.org/support/topic/filter-8/#post-5046110) * where would I find the instructions for how to use this filter? * Plugin Author [Tobias Bäthge](https://wordpress.org/support/users/tobiasbg/) * (@tobiasbg) * [11 years, 11 months ago](https://wordpress.org/support/topic/filter-8/#post-5046113) * Hi, * that filter is defined in the class-render.php file, see [https://github.com/TobiasBg/TablePress/blob/master/classes/class-render.php#L251](https://github.com/TobiasBg/TablePress/blob/master/classes/class-render.php#L251) * You would register a function to that hook in the same way as with the `tablepress_cell_content`, like * ``` add_filter( 'tablepress_table_render_data', 'andrew_filter_table', 10, 3 ); function andrew_filter_table( $table, $orig_table, $render_options ) { ... return $table; } ``` * Regards, Tobias * Thread Starter [Andrew Leonard](https://wordpress.org/support/users/andrewleonard/) * (@andrewleonard) * [11 years, 11 months ago](https://wordpress.org/support/topic/filter-8/#post-5046121) * I will look tomorrow For tonight I “swapped” column 3 to column 1 and column 1 to column 2 This way it looks at column 2 before column 1 and it works OK! * Plugin Author [Tobias Bäthge](https://wordpress.org/support/users/tobiasbg/) * (@tobiasbg) * [11 years, 11 months ago](https://wordpress.org/support/topic/filter-8/#post-5046198) * Hi, * that’s also a nice trick. 🙂 If there’s something else here where I can help, just let me know. * Best wishes, Tobias Viewing 8 replies - 1 through 8 (of 8 total) The topic ‘Filter’ is closed to new replies. * ![](https://ps.w.org/tablepress/assets/icon.svg?rev=3192944) * [TablePress - Tables in WordPress made easy](https://wordpress.org/plugins/tablepress/) * [Frequently Asked Questions](https://wordpress.org/plugins/tablepress/#faq) * [Support Threads](https://wordpress.org/support/plugin/tablepress/) * [Active Topics](https://wordpress.org/support/plugin/tablepress/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/tablepress/unresolved/) * [Reviews](https://wordpress.org/support/plugin/tablepress/reviews/) * 8 replies * 2 participants * Last reply from: [Tobias Bäthge](https://wordpress.org/support/users/tobiasbg/) * Last activity: [11 years, 11 months ago](https://wordpress.org/support/topic/filter-8/#post-5046198) * Status: resolved