I need to disable field A if field B is disabled too. Actually, my current field A has the following #states (altered using hook_alter_form) to disable it if field B is empty:
/** * Implements hook_form_alter(). */ function my_module_form_alter(&$form, $form_state, $form_id) { $form['field_a']['#states'] = [ 'disabled' => [ [':input[name="field_b[0][value][date]"]' => ['empty' => TRUE]], 'or', [':input[name="field_b[0][value][date]"]' => ['empty' => TRUE]], ], ]; } And it works perfectly, but I need to add the condition mentioned before. I found this in the official documentation: https://www.drupal.org/docs/drupal-apis/form-api/conditional-form-fields and I tried to use some of them like ‘readonly’ or ‘readwrite’ but this didn’t work. Can I evaluate properties like ‘#disabled’ from here? something similar to this:
function my_module_form_alter(&$form, $form_state, $form_id) { $form['field_a']['#states'] = [ 'disabled' => [ [':input[name="field_b[0][value][date]"]' => ['empty' => TRUE]], 'or', [':input[name="field_b[0][value][date]"]' => ['empty' => TRUE]], 'or', [':input[name="field_b"]' => ['#disabled' => TRUE]], ], ]; } 
