Hi

I'm using ACFs and wpDataTables - so far it's been great!  I would however like to process some data within the cells when they're rendered as a table.

For example, I have a bi-driectional between ACFs that are stored in the table as a comma delimited string of PostIDs, e.g. "[1,2,3]"

I want to render them in the table column as linked buttons in the column to those post, e.g. "<Post 1> <Post 2> <Post 3>"

I believe that wpdatatables_filter_cell_val will do the trick, but I would love to see an example of it in action as I'm having so troubles getting it to work.  I've googled and googled and it doesn't look like anyone has posted any examples of it in action. Can you provide one?

Thanks!

I've been tinkering and I got it *sort of* working, and so I'd like some advice as wpdatatables_filter_cell_val is not behaving as I think it should be according to the documentation.

Here's the working code from my function file:

function fun_fun_function( $val ){
     if(preg_match("/\[([0-9\,]*)\]/", $val)){
         $val_return_string = "";
         $val = str_replace("[", "", $val);
         $val = str_replace("]", "", $val);
         $val_array = explode(",", $val);
         foreach($val_array as $val_piece){
             $val_return_string = '<a href="#LINK_URL?id='.$val_piece.'" class="value_button">'.$val_piece.'</a> ';
         }
     return $val_return_string;
 } 
 return $val;
}
add_filter('wpdatatables_filter_cell_val','fun_fun_function', 9);

This tests each column for the string format I'm looking for, "[1,2,3]", and then cleans it up. Removes the brackets, explodes on the comma, adds a href to each id, and then returns it as a string.  The result is what I'm looking for, a column full of links to URLs with the ids.

Now for the current problem...

I would like to test the tableID to see which table that the cell is being passed to the function so that I can add custom returns.  I think I should be able to do this because the document looks like it does...

-------

wpdatatables_filter_cell_val( $val, $tableId )
This filter is applied to the value of the cell before it is returned to the front-end. 

$val is the cell value 

$tableId is the table identifier from the MySQL table (wp_wpdatatables).

-------

But when I add the $tableId to my function, like so....

function fun_fun_function( $val, $tableId ){

 it breaks the table render and nothing but the headers are displayed.

In an ideal world I would like to pass along the tableId and the columnName so that I don't have to test each cell value to see if it's the value I want to process further and then also apply additional custom processes for each column and/or table.

The code at line 617 in class.wpdatacolumn.php looks like it should pass the $tableID to wpdatatables_filter_cell_val just fine, but it's breaking the render when I add it to my function.  I've tried replacing $this->getParentTable()->getWpId() with a simple true to see if that would pass, but again, it ends up breaking the table render.

public function returnCellValue($cellContent) {
    $cellValue = $this->prepareCellOutput($cellContent);
    $cellValue = apply_filters('wpdatatables_filter_cell_val', $cellValue, $this->getParentTable()->getWpId());
    return $cellValue;
}

Thoughts?

::facepalm:: I totally missed the accepted_args argument. Thank you for pointing that one out!  :)