I am trying to add a new configuration field to my module's configuration page that uses a custom source_model, as soon as I add the field to system.xml the whole configuration section goes blank. If I take out the field, the section works fine and shows other fields as expected.

//file app/code/TahirYasin/Hello/etc/adminhtml/system.xml

                <field id="custom_select" 

my new source model

//file app/code/TahirYasin/Hello/Model/Config/Source/Custom.php


namespace TahirYasin\Hello\Model\Config\Source;

class Custom implements \Magento\Framework\Option\ArrayInterface
     * Return array of options as value-label pairs, eg. value => label
     * @return array
    public function toOptionArray()
        return [
            'value' => 'Label',
            'another_value' => 'Another value',

What am I doing wrong here? Any help plz

  • Finally I ran the command $ tree TahirYasin and realized that the model was not present in my module's directory because I accidentally declared it inside another Magento instance having same module. Never mind. – Tahir Yasin Oct 10 '17 at 8:19
public function toOptionArray()
    return [
        ['value' => 'val1', 'label' => __('Label 1')],
        ['value' => 'val2', 'label' => __('Label 2')]

Add options to the arrays

  • replaced toOptionArray function with provided code but that did not help either. – Tahir Yasin Oct 10 '17 at 7:52

Your class name in the source_model is not the same like the class name. Has to be

  • thanks for your answer, actually I pasted wrong path while posting question, I updated my question please have a look – Tahir Yasin Oct 9 '17 at 16:29

Hello I have perfect solution which will work 100 % ., You have to define only in system.xml .


If you have any query let me know .

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