Fatal error: Call to undefined method Mage_Tm_Googlemap_Helper_Data

Question

Fatal error: Call to undefined method Mage_Tm_Googlemap_Helper_Data::__() in /home/mypetshop/public_html/app/code/core/Mage/Admin/Model/Roles.php on line 160

I get this error when I try to Add new roles in my Magento Admin panel or edit an existing role.

Answer 1

Most probably, you are using a module called "Tm_Googlemap" that has an admin configuration area. When a module uses the admin configuration and role system, it must have a Helper-class defined for translations. I guess you can find the module in app/code/(local|community)/Tm/Googlemap/, and it will have a system.xml and adminhtml.xml in its etc/-directory.

There you will find a node like:

<tm_googlemap_options module="Tm_Googlemap">[...]

Then, go into the module's config.xml file. Either there is already a node global/helper, or you must create a new one:

[...]
<helpers>
    <Tm_Googlemap> <!-- make sure you use the string from modules="..." -->
        <class>Tm_Googlemap_Helper</class>
    </Tm_Googlemap>
</helpers>
[...]

After this, check the module directory again. If there ist no folder Helper/ with a file called Data.php, create it. Then, insert these contents:

<?php

class Tm_Googlemap_Helper_Data extends Mage_Core_Helper_Abstract {}

Flush cache, logout and login from the admin panel - it should work then! Make sure to uncomment the line you commented, changes in the /core/-directory are no-go im Magento.

Answer 2

Is this Your module or third party extension? Probably the class Mage_Tm_Googlemap_Helper_Data does not exists, have typo in name or is not defined in module config

<global>
  <helpers>
    <module>
      <class>Company_Module_Helper</class>
    </module>
  </helpers>
</global>

Also check if this module extends Mage_Core_Helper_Abstract

Answer 3

After all my research found a quick fix. Just comment the line on which you are getting error. In my case I commented line no. 160 in app/code/core/Mage/Admin/Model/Roles.php