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002 Create Custom Validation for Django Form Input

Create Custom Validation for Django Form Input
Here is the forms.py file to write an example custom validator that ensures input text starts with 'Z' or 'z'.
from django import forms
from django.core import validators


def check_initial_z(value):
    if value[0].lower() != 'z':
        raise forms.ValidationError("Name needs to start with Z")


class FormName(forms.Form):

    name = forms.CharField(validators=[check_initial_z])
    email = forms.EmailField()
    text = forms.CharField(widget=forms.Textarea)

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