Wrong entity ID exception in install script

Question

I am trying to run this install script but I am getting an exception Wrong entity ID. Tried debugging through debugger but I am not much familiar with the EAV architecture of Magento, so got lost.

Here is the portion of my config.xml

<resources>
    <namespace_mymodule_setup>
        <setup>
            <module>Namespace_Mymodule</module>
            <class>Namespace_Mymodule_Model_Resource_Eav_Mysql4_Setup</class>
        </setup>
        <connection>
            <use>core_setup</use>
        </connection>
    </namespace_mymodule_setup>
    <namespace_mymodule_write>
        <connection>
            <use>core_write</use>
        </connection>
    </namespace_mymodule_write>
    <namespace_mymodule_read>
        <connection>
            <use>core_read</use>
        </connection>
    </namespace_mymodule_read>
</resources>

I have defined the class by extending it from Mage_Eav_Model_Entity_Setup

class Namespace_Mymodule_Model_Resource_Eav_Mysql4_Setup extends Mage_Eav_Model_Entity_Setup {

}

And finally my install script contents are:

<?php

$installer = $this;

$installer->startSetup();

$installer->addAttribute( 'quote_payment', 'b_transaction_id', array() );
$installer->addAttribute( 'order_payment', 'b_transaction_id', array() );
$installer->addAttribute( 'invoice', 'b_transaction_id', array() );
$installer->addAttribute( 'creditmemo', 'b_transaction_id', array() );

$installer->endSetup();

What's the error about? And Its a possibility that this script ran earlier successfully from a different module (this one is a rewrite) but I am not sure if it has then how to check for that?

Answer 1

The whole EAV around Mage_Sales is not anymore EAV. To add new attributes "the EAV-way" you have to use the Sales Setup class, which takes carr of the flat table design.

Try to change the setup class to Mage_Sales_Model_Resource_Setup

What magento version are you using?

Answer 2

People getting this error in Magento2:

This seems to be an issue with dependency order during setup:upgrade with custom attributes. In Vendor/ModuleName/etc/module.xml, make sure to include a sequence tag for each of the modules your attributes depend on. If you're adding attributes to Products in your Setup/InstallData.php file, you need to include:

<sequence>
    <module name="Magento_Catalog" />
</sequence>

In between your module declaration