How can I add my own validation in Frappe before saving a document?You can add validation inside the

1

You can add validation inside the validate function of your DocType’s Python class.

# student.py

import frappe

from frappe.model.document import Document

class Student(Document):

def validate(self):

    if not self.email.endswith("@example.com"):

        frappe.throw("Only '@example.com' email addresses are allowed.")