In function „getCondition“ in der class
app/code/community/MDN/CrmTicket/Block/Admin/Widget/Grid/Column/Filter/CustomerName.php

change this buggy part

        if ($customerIdsSelected && sizeof($customerIdsSelected)>0) {
            if((count($customerIdsSelected) == 1) && count($customerIdsSelected[0] > 0)) {
                return array('in' => $customerIdsSelected);
            } else {
                return null;
            }
        }
        else
          return null;
      }

to

        if ($customerIdsSelected && sizeof($customerIdsSelected)>0) {
            if(count($customerIdsSelected) == 1 && count($customerIdsSelected[0]) > 0) {
                return array('in' => $customerIdsSelected);
            } else {
                return null;
            }
        }
        else
          return null;
      }

BTW: The programmer from MDN-CrmTicket unfortunately disregard both Zend and Magento Coding Style Guide! 🙁

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If you use restricted admin accounts, some menus of third party extensions might not work anymore for them. The reason is that the default return value of Mage_Adminhtml_Controller_Action::_isAllowed() has been changed from true to Mage::getSingleton(‚admin/session‘)->isAllowed(‚admin‘). Extensions that do not override this method in their admin controllers because they don’t use the ACL, now need the „ALL“ privilege.

The only solution is to patch the extensions and add this method to all their admin controllers:

protected function _isAllowed()
{
  return true;
}

Or if they actually have an ACL resource defined in etc/adminhtml.xml:

protected function _isAllowed()
{
  return Mage::getSingleton('admin/session')->isAllowed('ENTER RESOURCE IDENTIFIER HERE'); //e.g. 'admin/sales/productreturn'</pre>
} 

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Hier findet ihr eine kleine nützliche kostenfreie Magento-Toolbar!

Ihr könnt in Magento ein statischen CMS Block wie folgt im template einbinden.

Ein Beispiel zum einbinden über die entsprechende layout.xml :

<layout>
<asdf_xy_zzz>
<reference name="content">
 <block type="cms/block" name="cms_store_check">
 <action method="setBlockId"><block_id>store_check</block_id></action>
 </block>
 </reference>
 </asdf_xy_zzz>
</layout>

Direkt einbinden im Template:

echo $this->getLayout()->createBlock('cms/block')->setBlockId('your_id')->toHTML();?>

Einbinden im CMS:

{{block type="cms/block" block_id="your_id" template="cms/content.phtml"}}

Im Admin-Backend ist es möglich ein url-key für z.B. Kategorien zu setzen. Möchtet ihr jetzt automatisch von Magento anhand dieser ein Link erzeugen, könnt ihr das wie im folgenden Beispiel:

<a href="<?php echo Mage::getModel('catalog/category')->load(Mage::getModel('catalog/category')->getCollection()->addAttributeToFilter('url_key', 'all-bags')->getAllIds())->getUrl(); ?>" title="All bags" ><?php echo $this->__('All bags'); ?></a>