CCK from modification from within module code

Posted by alexeyl on April 8, 2008 at 2:36pm

Hi!

I need to alter CCK content type node form page. So I'd like to be able to render this form myself and surround it with my additions.
Here is how I do this:

$form = node_form(node_load($node_id));
$output .= drupal_render($form);

node id is correct and form is populated. But errors occur while rendering it:

* warning: implode() [function.implode]: Invalid arguments passed in xxx\includes\form.inc on line 548.
* warning: implode() [function.implode]: Invalid arguments passed in xxx\includes\form.inc on line 548.

What that could mean? how can I get this CCK form rendered?

Thank you!

Comments

It might help if you said

Posted by nevets on April 8, 2008 at 2:59pm

It might help if you said what you are trying to achieve, why/how are you trying to modify the form. Depending on your goal you probably want to theme the form and/or use hook_form_alter().

Thanks for your

Posted by alexeyl on April 8, 2008 at 5:28pm

Thanks for your response.

Currently I trigger this form as node/<id>/edit. But I want to output this form somewhere else inside of another page, that contains another valuable related information. Is this possible?

Also about hook_form_alter - how could I know exact id of the form from CCK? It will be just name of the type, right?

Thanks, Alex.

...

Posted by mooffie on April 9, 2008 at 6:59am

$form = node_form(node_load($node_id));
$output .= drupal_render($form);

Why are you breaking the process into two steps? You're saying "and surround it with my additions", but for merely surrounding it you don't need access to $form itself.

Here's a way to do it:

$node = node_load($node_id);

$output = "my prefix";
$output .= drupal_get_form($node->type .'_node_form', $node);
$output .= "my suffix";

how could I know exact id of the form from CCK?

It's "xyz_node_form". "xyz" stands for the the node-type.

===

And if you _do_ need access to $form, do something along of:

$node = node_load($node_id);

$form_id = $node->type .'_node_form';
$form = drupal_retrieve_form($form_id, $node);
//... manipulate $form ...
drupal_process_form($form_id, $form);
$output = drupal_render_form($form_id, $form);

But errors occur while rendering it

You shouldn't pass to drupal_render() a form that wan't built yet (by drupal_process_form()), because various values need initialization.

Great! You made my day!

Posted by alexeyl on April 9, 2008 at 11:21am

Great! You made my day! ;)

Thanks for your help!

Thanks

Posted by gagarine on December 15, 2009 at 3:17pm

Very cool... I try it for node creation but without success. I have nothing in $output :( and this error:

    * warning: call_user_func_array() [function.call-user-func-array]: First argument is expected to be a valid callback, 'node_form' was given in /Users/simon/Sites/site.com/includes/form.inc on line 371.
    * warning: Missing argument 3 for drupal_process_form(), called in /Users/simon/Sites/site.com/sites/all/modules/weekli_event_add/site_event_add.module on line 130 and defined in /Users/simon/Sites/site.com/includes/form.inc on line 396.

Here my code:

<?php
  global $user;
  //Get cck form
  $node_type = 'location';
  $node = array('uid' => $user->uid, 'name' => $user->name, 'type' => $type);
  $form_id = $node_type . '_node_form';
  $form = drupal_retrieve_form($form_id, $node);
  //... manipulate $form ...
  drupal_process_form($form_id, $form);
  $output .= drupal_render_form($form_id, $form);
  return $output;
?>

EDIT all work now

Posted by gagarine on December 16, 2009 at 2:27pm

After some test and adapte the code to D6 i have no more error. The form is returned but I have any field only:
- Revision information
- Authoring information
- Publishing options

The code:

<?php
  global $user;
  require_once("modules/node/node.pages.inc");
  //include_once(drupal_get_path('module', 'node') .'/content_types.inc');
  //include_once(drupal_get_path('module', 'content') .'/includes/content.admin.inc');
  $node_type = 'location';
  $node = array('uid' => $user->uid, 'name' => $user->name, 'type' => $type);
  $form_id = $node_type . '_node_form';
  $form = drupal_retrieve_form($form_id, &$form_state,$node);
  //... manipulate $form ...
   // prepare the $form
  drupal_prepare_form($form_id, $form, $form_state);
  drupal_process_form($form_id, $form,$form_state);
  $output .= drupal_render_form($form_id, $form);
  return $output;
?>

EDIT all work with this code (stupid error in variable name):

<?php
  require_once("modules/node/node.pages.inc");
  $node_type = 'location';
  //$node = node_load(2);
  $node = array('type' => $node_type,'uid' => $GLOBALS['user']->uid, 'name' => $GLOBALS['user']->uid);
  $form_state = array();
  $form_id = $node_type . '_node_form';
  // create a basic $node array
  $form = drupal_retrieve_form($form_id, $form_state,$node);
  //... manipulate $form ...
  //prepare the $form
  drupal_prepare_form($form_id, $form, $form_state);
  drupal_process_form($form_id, $form,$form_state);
  $output .= drupal_render_form($form_id, $form);
  return $output;
?>