I have a custom component where the user can add some data. Here are the two relevant fields:
<field name="title" type="text" label="Title" description="Please enter a title" required="true" /> <field name="alias" type="text" label="Alias" description="Please enter an unique alias" required="true" />
I am currently using the standard 'save' method to save the form data. But the problem obvious is that it is saving duplicate alias items. Where and how will I add a check to ensure that the alias is not in use (just like with Menu Item or Article).