'How can I solve this KeyError

How to solve this?? Is anything wrong there?? I'm new to Django... Thanks in advance

Solution 1:^[1]

Good day!

Probably, there is an error in the template HTML with missing user_email field in the <form>.

# form.py
from django import forms
from django.core import validators


class UserForm(forms.Form):
    user_email = forms.EmailField()
    user_vmail = forms.EmailField()

    def clean(self):
        all_data = super().clean()
        print(all_data)
        user_email = all_data["user_email"]
        user_vmail = all_data["user_vmail"]

        if user_email != user_vmail:
            raise forms.ValidationError("Email does not match")

This gives be the following:

[26/Jan/2022 05:57:32] "GET / HTTP/1.1" 200 3702
{'user_email': '[email protected]', 'user_vmail': '[email protected]'}
[26/Jan/2022 05:57:43] "POST / HTTP/1.1" 302 0
[26/Jan/2022 05:57:43] "GET / HTTP/1.1" 200 3702

The source code: https://github.com/almazkun/django_form

Solution 2:^[2]

For more information, I strongly recommend checking the documentation, https://docs.djangoproject.com/en/4.0/ref/forms/validation/#form-field-default-cleaning

def clean(self):
    cleaned_data = super().clean()
    user_email= cleaned_data.get("user_email")
    user_vmail = cleaned_data.get("user_vmail")

Solution 3:^[3]

try this

user_email = all_data.get('user_email')

user_vmail = all_data.get('user_vmail')

or this

user_email = self.all_data.get('user_email')

user_vmail = self.all_data.get('user_vmail')

1st or 2nd will definitely fix that key error

Solution 4:^[4]

Since you are using square brackets [] for keys it will throw KeyError if that key not exists in your all_data

class user_form(forms.Form):
    user_email = forms.EmailField()
    user_vmail = forms.EmailField()

    def clean(self):
        all_data = super().clean()
        user_email = all_data['user_email'] #<---- throws key error if 'user_email' not in all_data
        user_vmail = all_data['user_vmail'] #<---- throws key error if 'user_vmail' not in all_data

        if user_email != user_vmail:
            raise forms.ValidationError("Email Doesn't match")

So to avoid KeyError check for key if exists in your all_data as

class user_form(forms.Form):
    user_email = forms.EmailField()
    user_vmail = forms.EmailField()

    def clean(self):
        all_data = super().clean()
        if not ('user_email' in all_data.keys() and 'user_vmail' in all_data.keys()):
            raise forms.ValidationError("Please fill all fields.")
    
        user_email = all_data['user_email']
        user_vmail = all_data['user_vmail']

        if user_email != user_vmail:
            raise forms.ValidationError("Email Doesn't match")

Or to avoid KeyError use () as

user_email = all_data('user_email')
user_vmail = all_data('user_vmail')

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1	akun.dev
Solution 2	Lackson Munthali
Solution 3	Ankit Tiwari
Solution 4

'How can I solve this KeyError

Solution 1:[1]

Solution 2:[2]

Solution 3:[3]

Solution 4:[4]

Sources

Related Questions

Solution 1:^[1]

Solution 2:^[2]

Solution 3:^[3]

Solution 4:^[4]