Magento 2 : Add condition for form element in email template

Question

Added new input field in default Contact form :

/magento_root/app/design/frontend/VENDER_NAME/YOUR_THEME/Magento_Contact/templates/form.phtml

<input title="Test Id" name="testid" id="testid" value=""/>

Created new custom template and assigned it to Contact Form with below code.

{{trans "Test Id: %testid" testid=$data.testid}}
{{trans "Name: %name" name=$data.name}}
{{trans "Email: %email" email=$data.email}}
{{trans "Phone Number: %telephone" telephone=$data.telephone}}
{{trans "Comment: %comment" comment=$data.comment}}

I tried to add condition like :

{{depend $data.testid}}
 {{trans "Test Id: %testid" testid=$data.testid}}
{{/depend}}

But this is not working.

If $data.testid is empty then I don't want to print that line :

{{trans "Test Id: %testid" testid=$data.testid}}

Answer 1

No way found to add condition explained in question, I did it using following way:

Created 2 different email templates and then I am going to assign a template depending on condition.

Inside controller, I am checking that if $testid is not empty then I am assigning a email template with

{{trans "Test Id: %testid" testid=$data.testid}}
{{trans "Name: %name" name=$data.name}}
{{trans "Email: %email" email=$data.email}}
{{trans "Phone Number: %telephone" telephone=$data.telephone}}
{{trans "Comment: %comment" comment=$data.comment}}

otherwise I am assigning another which is,

{{trans "Name: %name" name=$data.name}}
{{trans "Email: %email" email=$data.email}}
{{trans "Phone Number: %telephone" telephone=$data.telephone}}
{{trans "Comment: %comment" comment=$data.comment}}