In this post I am going to explain how to Set Default Values for System Configuration Fields in Magento 2.

First we will make one “system.xml” file at below path.

Path: app/code/<vendor>/<module>/etc/adminhtml/system.xml

<?xml version="1.0" ?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Config:etc/system_file.xsd">
    <system>
        <tab id="ht" translate="label" sortOrder="999999">
            <label>HT</label>
        </tab>
        <section id="mymodulesection" translate="label" type="text" sortOrder="30" showInDefault="1" showInWebsite="1" showInStore="1">
            <class>separator-top</class>
            <label>My Module</label>
            <tab>ht</tab>
            <resource>Magento_Config::config_admin</resource>
            <group id="general" translate="label" type="text" sortOrder="10" showInDefault="1" showInWebsite="1" showInStore="1">
                <label>General</label>
                <field id="enabled" translate="label" type="select" sortOrder="5" showInDefault="1" showInWebsite="1" showInStore="1">
                    <label>Enabled</label>
                    <source_model>Magento\Config\Model\Config\Source\Yesno</source_model>
                </field>
                <field id="welcome_text" translate="label" type="text" sortOrder="10" showInDefault="1" showInWebsite="1" showInStore="1">
                    <label>Welcome Text</label>
                </field>
            </group>
        </section>
    </system>
</config>

Now, we need to set default values for above system config fields.

For that add one file “config.xml” at below path.

Path: app/code/<vendor>/<module>/etc/config.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../Store/etc/config.xsd">
    <default>
        <mymodulesection>
            <general>
                <enabled>1</enabled>
                <welcome_text>Welcome</welcome_text>
            </general>
        </mymodulesection>
    </default>
</config>

The path of the field is “section/grounp/field”.

Here our section is “mymodulesection”, group is “general” and fields are “enabled” and “welcome_text”.

This code will make default system config value when you install module.

 

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