databasejoin element, limit to check max 5 checkboxes

[wuschel_lux]

Hi all,

I am trying to limit the user to not select more than 5 checkboxes, rendered from a databasejoin element from a different table as checkbox.
There can be 20 checkboxes shown, but only up to 5 can be selected, else the from could not be send.

The final idea would be to have a table with all the options. and a second one with the databasejoin and on top a counter x selections left.

I have a working version with "normal" fields, but with a databasejoin, it would be more flexible and table driven. The "counter" x selections left is realised with a calc field.

Thanks

 

[troester]

Here are some element JS examples
http://fabrikar.com/forums/index.php?wiki/checkbox-element/#js-code-examples
http://fabrikar.com/forums/index.php?wiki/element-javascript/&redirect=javascript-elements
http://fabrikar.com/forums/index.php?wiki/element-javascript-advanced/

There should be also some threads about it.

Or with a validation like here (pretty old thread)
http://fabrikar.com/forums/index.php?threads/solved-2-checkbox-validation-conditions.44101/