Node reference field share between two content types

Question

I have Two Content types Store and Deals and one Vocabulary named as Outlets. Outlet has many terms. I have added outlets as a term reference field to stores content type, and title field of store content type is added as a node reference field to deals.

1.Store content type When I am adding a new store I am selecting some outlet terms for it and saving it.

2.Deals Content type In Deals content type when I am creating a new deal I am selecting any store in dropdown, which I have added here as a node reference of store content type. What my concern is now while selecting any store title I want its corresponding outlets to be displayed here, so that if I wish I can uncheck some of them and then save.

Any help would be much appreciated.Please find the screenshot for better understanding.

Top Image is the store content type adding a store carters Second image is the deals content type I am selecting the store which I have previously added in stores, now while selecting carters the corresponding outlets should get selected

Answer 1

I'm not sure you can do it with Conditional Fields, so I did it with a custom code. You have to :

1. Hook on your form
2. Get referenced node
3. Get its taxonomy value(s)

4. Check this values in your term reference field.

   function MYMODULE_form_alter(&$form, &$form_state, $form_id) {    
       if($form_id == "page_node_form") {
           $form['field_OUTLETS']['#prefix'] = '<div id="mytaxofield">';
           $form['field_OUTLETS']['#suffix'] = '</div>';
           $form['field_STOREREFERENCE']['und']['#ajax'] = array(
               'callback' => 'MYCALLBACK',
               'wrapper' => 'mytaxofield',
               'method' => 'replace',
               'effect' => 'fade',
           );
       }
   }
   
   function MYCALLBACK($form, $form_state) {
       if(!empty($form_state['input']['field_STOREREFERENCE'])) {
           $nr = node_load($form_state['input']['field_STOREREFERENCE']['und']);
           foreach($nr->field_OUTLETS['und'] as $delta => $value) {
               // Add term to default values
               $form['field_OUTLETS']['und']['#default_value'][] = $value['tid'];
               // As it's not enough (I might need help on that one), I force it with the '#checked' value
               $form['field_OUTLETS']['und'][$value['tid']]['#checked'] = TRUE;
           }
           $form['field_OUTLETS']['und']['#default_value'] = drupal_map_assoc($form['field_OUTLETS']['und']['#default_value']);
       }
       return $form['field_OUTLETS'];
   }