My admin module yields helper not found error on dashboard page

Question

I've stripped my module down to try and identify this error. The following are my files. Can you see why I get the error "Fatal error: Class 'Mage_Caitlinhavener_Addschool_Helper_Data' not found in /var/www/DTS_staging/public_html/app/Mage.php on line 546" on dashboard page?

Caitlinhavener/AddSchooltest/etc/config.xml:

<?xml version="1.0"?>
  <config>
    <modules>
        <Caitlinhavener_Addschooltest>
            <version>0.1.0</version>
        </Caitlinhavener_Addschooltest>
    </modules> 

    <global>
        <helpers>
            <Addschooltest>
                <class>Caitlinhavener_Addschool_Helper</class>
            </Addschooltest>
        </helpers>  
    </global> 

    <admin>
        <routers>
           <adminhtml>
                <use>admin</use>
                <args>
                    <modules>
                        <Caitlinhavener_Addschooltest after="Mage_Adminhtml">Caitlinhavener_Addschooltest</Caitlinhavener_Addschooltest>
                    </modules>
                </args>
           </adminhtml>           
        </routers>      
    </admin> 
</config>

Caitlinhavener/AddSchooltest/etc/adminhtml.xml:

<?xml version="1.0"?>
<config>
    <menu>
        <SchoolMenu translate="title" module="Caitlinhavener_Addschooltest">
            <title>Schools</title>
            <sort_order>23</sort_order>
            <children>
                <myitem2 translate="title" module="Caitlinhavener_Addschooltest">
                        <title>Add Schools</title>
                        <action>adminhtml/addschool</action>
                        <sort_order>2</sort_order>                        
                </myitem2>
            </children>
        </SchoolMenu>
    </menu>
</config>

Caitlinhavener/Addschooltest/Helper/Data.php:

<?php
class Caitlinhavener_Addschooltest_Helper_Data extends Mage_Core_Helper_Data
{
}

Caitlinhavener/Addschooltest/controllers/AddschoolController.php:

<?php

class Caitlinhavener_Addschooltest_AddschoolController extends Mage_Adminhtml_Controller_Action
{
    public function indexAction()
    {
        $this->loadLayout();
        $this->renderLayout();
    }
}

score 9 · Accepted Answer · answered Aug 08 '13 at 17:46

9

The module attributes on your xml elements should be Addschooltest, like the alias you gave your helpers in config.xml instead of Caitlinhavener_Addschooltest.
Off topic a bit: You might want to change this to a lowercase value. I mean:

<helpers>
    <addschooltest><!-- helper alias -->
        <class>Caitlinhavener_Addschool_Helper</class>
    </addschooltest>
</helpers>

After that your adminhtml.xml file should look like this:

<?xml version="1.0"?>
<config>
    <menu>
        <SchoolMenu translate="title" module="addschooltest">
            <title>Schools</title>
            <sort_order>23</sort_order>
            <children>
                <myitem2 translate="title" module="addschooltest">
                        <title>Add Schools</title>
                        <action>adminhtml/addschool</action>
                        <sort_order>2</sort_order>                        
                </myitem2>
            </children>
        </SchoolMenu>
    </menu>
</config>

answered Aug 08 '13 at 17:46

Marius

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Made identical changes... deleted cache and session files... reindexed... same error on dashboard :( – CaitlinHavener Aug 08 '13 at 19:06
@CaitlinHavener this means that there is an other occurrence of module="Caitlinhavener_Addschooltest" in an other xml file. – Marius Aug 08 '13 at 19:12
I have a replica module but without test at the end... but I deleted its /etc/modules/ xml file... I'll try deleting the whole module. – CaitlinHavener Aug 08 '13 at 20:21
I deleted the other modules Caitlinhavener/Addschool... discovered that my activation xml file was tagged Caitlinhavener_Addschool instead of Caitlinhavener_Addschooltest. Made those changes and deleted cache files. .. still have the error. – CaitlinHavener Aug 08 '13 at 20:45
@CaitlinHavener. I'm 99.9% sure the error comes from an xml file. like I described. To debug this, try to disable your modules one by one until you isolate the problem. Then check the xml files in your module (etc and layout) – Marius Aug 09 '13 at 06:43

score 3 · Answer 2 · answered Aug 08 '13 at 20:55

The helper class prefix you're declaring does not match the one that you're using (Caitlinhavener_Addschooltest_Helper_Data)

In your config.xml, change it from

<class>Caitlinhavener_Addschool_Helper</class>

to

<class>Caitlinhavener_Addschooltest_Helper</class>

My admin module yields helper not found error on dashboard page

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