When does the ‘django.core.exceptions.FieldError’ error occur?
To comprehend the resolution for this issue, we initiated a project named ‘Db’.
Starting the Project Folder
To start the project use this command
django-admin startproject Db
cd Db
To start the app use this command
python manage.py startapp app
Now add this app to the ‘settings.py’
INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'app'
]
Setting Necessary Files
models.py: Below code defines a Django model named “People” with two fields: “name” as a character field with a maximum length of 255 characters, and “age” as an integer field. This model represents a data structure for storing information about people, such as their name and age, in a Django web application.
Python
from django.db import models # Create your models here. class People(models.Model): name = models.CharField(max_length=255) age = models.IntegerField() |
views.py: Below code defines a view function, `get_people_by_name`, which takes a request and a name parameter. It retrieves a person’s data from the `People` model based on the provided name and returns an HTTP response displaying the person’s name and age. If the record doesn’t exist, it raises an exception.
Python
from django.shortcuts import render from django.http import HttpResponse from django.core.exceptions import ObjectDoesNotExist from .models import People def get_people_by_name(request,name): people = People.objects.get(fullName=name) return HttpResponse(f"{people.name} and {people.age}") |
Run the server with the help of following command:
python3 manage.py runserver
Output
FieldError in Django
In this article, we will address the resolution of the ‘django.core.exceptions.FieldError’ in Django. This particular error, ‘django.core.exceptions.FieldError’, points to a problem associated with a field in your model or query. The discussion will focus on identifying and rectifying this error through practical examples.