How could I have a cck field get the computed value of another cck field?

Question

Lets say I have a cck field called foo. It is a text field with php input. Say the php code in foo field results in the value of 1,256 when computed. I need cck field called bar to pick up/obtain/have the VALUE (1,256) of cck field foo.

Node XYZ
Foo:*some php code*      ===>results in value of 1,256
Bar:1,256

If I just have cck field Foo in a node, it spits out the correct value, (1,256) but that field is the way our views are sorted; and views cant sort by a php field.

I tried to get computed_field.module to obtain its value, but it would spit out the php code, not the value.

Any ideas out there?

Answer 1

You need to hook the node submit form, and add a submit handler

function moduleNameHere_form_nodeNameHere_node_form_alter(&$form, $form_state) {
             //Add handler
             $form['#submit'][] = 'moduleNameHere_submit_function';
}

then you create the handler that will get called on submit

function moduleNameHere_submit_function($form, &$form_state) {
   //Assign foo's value to variable
   $myValue = $form_state['values']['foo'];

   //Set bar to foo's variable
   $form_state['values']['bar'] = $myValue;

}