Mage_Module_Helper_Data not found in Magento C.E 1.9

Question

I am using magento 1.9 C.E and I have this issue whenever I try to disable any module from app/etc/modules/Mymodule_Custom.xml

    <active>false</false>

It throws the error Mage_Module_Helper_Data not found. I don't understand why it is coming and this is the problem with almost all the extensions that I'm using. Please help me out folks.

Can you give me the exact error. Bcoz I have face the same issue in past I can Help you in that — Murtuza Zabuawala, Aug 20 '16 at 10:37
Maybe your helper class is getting called from some other module, check the stack trace of error in exception.log — huzefam, Aug 20 '16 at 10:43
I have used a few extensions of this vendor and whenever, I'm trying to perform the activity of disabling the error is thrown. — Abhishek Dhanraj Shahdeo, Aug 20 '16 at 10:58
Fatal error: Class 'Mage_Price_Helper_Data' not found in /var/www/html/eleczo/trunk/app/Mage.php on line 547 — Abhishek Dhanraj Shahdeo, Aug 20 '16 at 11:00
The helper is probably still used by translations in XML. Search the XML files for module="mymodule_custom". Also, did you clear the cache? — Fabian Schmengler, Aug 20 '16 at 21:00
I am not using this helper anywhere else. The helper is not being used as there is nothing written inside the helper code, it is only written to avoid error. — Abhishek Dhanraj Shahdeo, Sep 08 '16 at 07:18
The empty helper has a purpose: load module specific translations. That's why I suspected the reason to be translated strings in the XML. See also: http://magento.stackexchange.com/questions/6722/how-to-implement-translations-in-design-template-package-csvs-how-does-echo-t/78483#78483 (Other Translation Methods) — Fabian Schmengler, Sep 08 '16 at 08:14
do you know last extension that you installed after that this error is coming — Murtuza Zabuawala, Sep 08 '16 at 08:31
The problem is not with just this particular extension, it is problem with all the extensions of this vendor, and a couple of more extensions. I haven't installed any extensions recently in like 9 months or so. — Abhishek Dhanraj Shahdeo, Sep 08 '16 at 08:33
ok if you think that this particular supplier extension has issue then provide me config.xml and adminhtml.xml any one so we have better idea — Murtuza Zabuawala, Sep 08 '16 at 08:41
@Murtuza Please provide your email id, I'll send it to you, I can't put it here just like this. — Abhishek Dhanraj Shahdeo, Sep 08 '16 at 08:46
Do you have any modules installed that their name contain the word "Price" (for example Tralala_Price.xml) ? — Yiorgos Moschovitis, Sep 14 '16 at 01:24
Try to clear the entry for that module from the DB table 'core_resources' and 'core_config_data'; — Anurag Khandelwal, Sep 14 '16 at 10:22
Try to:

Remove data related to that module from 'core_resource' & 'core_config_data';

Then remove the module and clear cache from command line;

Also note, if that extension provider provides any basic necessary extension for all other extensions from that team. If so, make note you have that — Anurag Khandelwal, Sep 14 '16 at 10:23

score 4 · Answer 1 · answered Sep 08 '16 at 08:05

The error

The error comes from the fact that the helper class of the module you're disabling is being used somewhere else in the code. For example, it could be:

In another module
In the templates

Find the file using it

So first, you need to find out what is the name of the helper.

To do so, open app/code/<codePool>/Mymodule/Custom/etc/config.xml and look for the following piece of code:

<helpers>
    <module>
        <class>Mymodule_Custom_Helper</class>
    </module>
</helpers>

Here you have to take note the name of the node between <helpers> and <class>. In my example, it is module

Now, you need to find out where this helper name is being used.

To do so, you can use the following command on your Magento root folder:

grep -r "module" . | grep -v "app/code/<codePool>/Mymodule/Custom"

This command basically means:

Look for the string module in my Magento folder but exclude the result from app/code/<codePool>/Mymodule/Custom

Thanks to this command you should be able to find where your helper is being used outside of your module quickly.

Notice: the command above will not exclude the templates or layout files from the module. Thus if your helper is being used in the module templates/layouts those files will be displayed in the list. To avoid that you can add extra grep to the command for instance:

grep -r "module" . | grep -v "app/code/<codePool>/Mymodule/Custom" | grep -v "app/design/frontend/base/default/template/mymodule/custom"

Once you found the code

Once you've found the code, I can't tell you what to do as it's a case by case decision. If you're disabling the module, you should definitely remove that helper call and/or refactor the file where it's being used.

I am not using the helper anywhere, not in that module or any other module or any phtml file. — Abhishek Dhanraj Shahdeo, Sep 08 '16 at 08:14
Also, when I am removing the complete module that is deleting the module, it is throwing the same error. — Abhishek Dhanraj Shahdeo, Sep 08 '16 at 08:15
@AbhishekDhanrajShahdeo yeah it is because your helper is definitely used somewhere. Give a try to my procedure — Raphael at Digital Pianism, Sep 08 '16 at 08:16
I have checked the whole project, the helper is being used only in that module, when I'm completely deleting the whole code of that module, it is throwing the same error. — Abhishek Dhanraj Shahdeo, Sep 08 '16 at 08:26
@AbhishekDhanrajShahdeo maybe you have compilation enabled ? Check under System > Tools > Compilation and disable it, recompile then reenable it. — Raphael at Digital Pianism, Sep 08 '16 at 08:31
Seems if you have deleted the whole modules code then either that particular helper is getting used somewhere else or its cache. — Kingshuk Deb, Sep 09 '16 at 07:02

Mage_Module_Helper_Data not found in Magento C.E 1.9

1 Answers1

The error

Find the file using it

Once you found the code