Hidding the "Split Summary At Cursor" button in drupal 6

Is it possible to completely disable the button?
I too use FCKEditor.

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thanks rrabbit for this solution

I have installed this module and I am able to disable the "description" of a content type but not the "split summary at cursor" button.
Where exactly could I disable the button?

but where is it?

I was checking back here to see if there has been any development to somehow make this feature optional - by way of permissions. I see that you can tweak your theme to hide it - but I was hoping to find a more elegant way (like so many other things in Drupal ;) to make this feature optional. That way, we could still have this feature (obviously it was considered important enought to include in D6) available for certain roles. Dont' know where to put this as a 'feature request' - so I guess I'll add to this thread.

This works, just tested it on pages using if ($form_id =='page_node_form')

Great work! This is better as I prefer to keep the all changes in one place.

Setting as a value can cause errors.
It'd be better to use ['#access']=FALSE; , like this:

function custom_form_alter(&$form, $form_state, $form_id) {
  if($form_id=='MYTYPE_node_form') {
    $form['body_field']['teaser_include']['#access'] = FALSE;
  }
}

Or, for ALL content types...

if(isset($form['body_field']['teaser_include'])) {
    $form['body_field']['teaser_include']['#access'] = FALSE;
  }

It is an alternative solution but definitely not simple as you need to install CCK and add a field and maintain the field list...etc

This works on FF3 and Google Chrome which I tested, but not IE7. Any other way to keep the core untouched?

Thanks adamfeldman. If you don't know how to use CSS then 'resizable_body' module is the easiest way to hide the "split summary at cursor" button. http://drupal.org/project/resizable_body

If you know how to use CSS another option is to hide it by adding one of the two below style to your stylesheet file.

This CSS will hide "split summary at cursor" button on all pages.

.teaser-checkbox {
     display: none;
}

This CSS will hide "split summary at cursor" button only on one specific page. The Zen theme is required for this to work.

.page-node-add-YOUR-NODE-TYPE-HERE 
.teaser-checkbox {
     display: none;
}

For example is your node type is 'job_posting' then the following line
.page-node-add-YOUR-NODE-TYPE-HERE
should read
.page-node-add-job-posting

To find the node type navigate to Administer > Content management > Content types. Click on EDIT link beside your content type. Find section TYPE. Note that in your style underscores _ must be replace with dashes -. For example 'job_posting' should be replace by 'job-posting'

Thanks for the recommendation.

This 'feature' of D6 (which I didn't even know about six months into developing a site using D6 - given I went from D5 to D6 and installed all contrib modules without actually seeing the default D6 node edit forms) has caused me no small amount of stress.

If I had my project all over again, I would have done what was suggested above - use a separate CCK field for the body. This seems a bit much, given Body is a default feature across all Drupal nodes, but that's the easiest way to provide a real WYSIWYG experience for professional news editors, who really want to use an MS Word-like app to edit their stories, and avoid conflict with all this client-side javascript split-window, break-tag, teaser-body-re-concatenation business.

You need to hide the checkbox, but keep it checked. My guess is to use a form_alter hook in a custom module, OR create a javascript file with a jquery function that makes sure the checkbox is checked, even when hidden.

The message is triggered in this code, from node.module - the teaser_include checkbox is hidden, but not marked as 'checked':

/**
 * Ensure value of "teaser_include" checkbox is consistent with other form data.
 *
 * This handles two situations in which an unchecked checkbox is rejected:
 *
 *   1. The user defines a teaser (summary) but it is empty;
 *   2. The user does not define a teaser (summary) (in this case an
 *      unchecked checkbox would cause the body to be empty, or missing
 *      the auto-generated teaser).
 *
 * If JavaScript is active then it is used to force the checkbox to be
 * checked when hidden, and so the second case will not arise.
 *
 * In either case a warning message is output.
 */
function node_teaser_include_verify(&$form, &$form_state) {
  $message = '';

  // $form['#post'] is set only when the form is built for preview/submit.
  if (isset($form['#post']['body']) && isset($form_state['values']['teaser_include']) && !$form_state['values']['teaser_include']) {
    // "teaser_include" checkbox is present and unchecked.
    if (strpos($form_state['values']['body'], '<!--break-->') === 0) {
      // Teaser is empty string.
      $message = t('You specified that the summary should not be shown when this post is displayed in full view. This setting is ignored when the summary is empty.');
    }
    elseif (strpos($form_state['values']['body'], '<!--break-->') === FALSE) {
      // Teaser delimiter is not present in the body.
      $message = t('You specified that the summary should not be shown when this post is displayed in full view. This setting has been ignored since you have not defined a summary for the post. (To define a summary, insert the delimiter "&lt;!--break--&gt;" (without the quotes) in the Body of the post to indicate the end of the summary and the start of the main content.)');
    }

    if (!empty($message)) {
      drupal_set_message($message, 'warning');
      // Pass new checkbox value on to preview/submit form processing.
      form_set_value($form['teaser_include'], 1, $form_state);
      // Pass new checkbox value back onto form for those cases
      // in which form is redisplayed.
      $form['teaser_include']['#value'] = 1;
    }
  }

  return $form;
}

Also, in node.module, is this thing:

/**
 * See if the user used JS to submit a teaser.
 */
function node_teaser_js(&$form, &$form_state) {
  if (isset($form['#post']['teaser_js'])) {
    // Glue the teaser to the body.
    if (trim($form_state['values']['teaser_js'])) {
      // Space the teaser from the body
      $body = trim($form_state['values']['teaser_js']) ."\r\n<!--break-->\r\n". trim($form_state['values']['body']);
    }
    else {
      // Empty teaser, no spaces.
      $body = '<!--break-->'. $form_state['values']['body'];
    }
    // Pass updated body value on to preview/submit form processing.
    form_set_value($form['body'], $body, $form_state);
    // Pass updated body value back onto form for those cases
    // in which the form is redisplayed.
    $form['body']['#value'] = $body;
  }
  return $form;
}

and this line from the node_body_field function in node.pages.inc:

    '#default_value' => $include ? $node->body : ($node->teaser . $node->body),

Which causes all kinds of mayhem when you have TinyMCE installed, given the break tag won't work with TinyMCE (type it in and the comment tag will be converted to visible entities - Drupal won't see the break tag, etc.) So, instead when you open the node edit form, you get the teaser + body (the body already containing the teaser text) and it results in the body having repeating text.

I'd love to hear how to turn this all off, without hacking core, upgrading to D7, having to migrate all my body fields to a new CCK field (and subsequently change all my template code that points to the default body field).

The solution nested as a reply above is probably the best, cleanest solution:

http://drupal.org/node/225955#comment-2065386

Yes it works perfectly !