System configuration custom source model error

Question

I'm trying to create an System configuration section with custom field values

This is my code:

system.xml

<?xml version="1.0"?>
<config>
 <tabs>
 <macerierconf translate="label">
 <label>Macerier</label>
 <sort_order>150</sort_order>
 </macerierconf>
 </tabs>
 <sections>
 <tab1 translate="label" module="adminhtml">
 <label>Settings</label>
 <tab>macerierconf</tab>
 <sort_order>100</sort_order>
 <show_in_default>1</show_in_default>
 <show_in_website>1</show_in_website>
 <show_in_store>1</show_in_store>
 <groups>
 <smssending translate="label comment">
 <label>test label</label>
 <sort_order>60</sort_order>
 <show_in_default>1</show_in_default>
 <show_in_website>1</show_in_website>
 <show_in_store>1</show_in_store>
 <fields>
 <device translate="label comment">
 <label>Device</label>
 <frontend_type>select</frontend_type>
 <source_model>macerier_test/system_config_source_dropdown_values</source_model>
 <sort_order>30</sort_order>
 <show_in_default>1</show_in_default>
 <show_in_website>0</show_in_website>
 <show_in_store>0</show_in_store>
 </device>
 </fields>
 </smssending>
 </groups>
 </tab1>
 </sections>
</config>

config.xml

<?xml version="1.0"?>
<config>
 <modules>
 <Macerier_TEST>
 <version>0.1.0</version>
 </Macerier_TEST>
 </modules>
 <global>
 <models>
 <macerier_test>
 <class>Macerier_TEST_Model</class>
 </macerier_test>
 </models>
 </global>
</config>

then in Macerier\TEST\Model\System\Config\Source\Dropdown\Values.php I have this:

<?php
class Macerier_TEST_Model_System_Config_Source_Dropdown_Values
{
 public function toOptionArray()
 {
 return array(
 array(
 'value' => 'key1',
 'label' => 'Value 1',
 ),
 array(
 'value' => 'key2',
 'label' => 'Value 2',
 ),
 );
 }
}

and I get this error:

PHP Fatal error: Call to a member function toOptionArray() on a non-object in /home/user/public_html/magento/app/code/core/Mage/Adminhtml/Block/System/Config/Form.php on line 463

I am sure I'm doing something wrong here because without the custom source model the module is working.

• Amit Bera: can you show me config xml code?
• Macerier: @AmitBera I've added the config.xml source code
• HungDQ: did you try to change your module name from TEST to Test ?
• Macerier: @HungDQ I don't think it matters i have an working version without Source Model the problem is somewhere in defining the model

Answer 1

Dropdown cannot get it Source model

macerier_test/system_config_source_dropdown_values that why it showing the error

May be you did not define model prefix.

As per as your code macerier_test . is models prefix

So let define model prefix at config.xml

config.xml

<?xml version="1.0"?>
<config>
 <modules>
 <Macerier_TEST>
 <version>0.1.0</version>
 </Macerier_TEST>
 </modules>
 <!-- add this -->
 <global>
 <models>
 <macerier_test> <!-- call as model prefix identifier -->
 <class>Macerier_TEST_Model</class>
 </macerier_test>
 </models>
 </global>
</config>