Made the url validator not accept urls from the website

tiny0/forms.py

@@ -1,6 +1,7 @@
 from flask_wtf import FlaskForm
 from wtforms import StringField, SubmitField, ValidationError
 from wtforms.validators import DataRequired, Length
+from tiny0.config import WEBSITE_DOMAIN
 
 # Validates a URL
 def validate_URL(form, field):
@@ -23,6 +24,11 @@ def validate_URL(form, field):
 		# Raise a ValidationError
 		raise ValidationError("Invalid URL")
 
+	# If the url contains the websites domain
+	if WEBSITE_DOMAIN in field.data:
+	# Raise a ValidationError
+		raise ValidationError("Invalid URL")
+
 	# If the URL does not start with http:// and https://
 	if not(field.data.startswith("http://")) and not(field.data.startswith("https://")):
 		# Add https:// to the beginning of the URL