{"id":22309,"date":"2020-11-24T12:55:56","date_gmt":"2020-11-24T12:55:56","guid":{"rendered":"https:\/\/cnsfly.com\/vytcdc\/?p=22309"},"modified":"2024-09-26T11:29:56","modified_gmt":"2024-09-26T11:29:56","slug":"python-django-crud-web-application","status":"publish","type":"post","link":"https:\/\/cnsfly.com\/vytcdc\/python-django-crud-web-application\/","title":{"rendered":"Python Django Crud Web Application"},"content":{"rendered":"

Django is a free, open-source framework for web applications written in Python. Django offers a large assortment of modules you can use in your projects. Firstly, there are frameworks to save developers a lot of time and headaches wasted, and Django is no different.<\/p>\n

\"python
python django crud<\/figcaption><\/figure>\n

In this post, we briefly cover the steps needed to create a CRUD app in Django; the steps we will need are:
\n\u2022 Install Django and start a new project
\n\u2022 Make an App
\n\u2022 Create the Model
\n\u2022 Make the Admin Interface (optional)
\n\u2022 Create the View
\n\u2022 Define the URLs (i.e., URL to View mapping)
\n\u2022 Create the Templates<\/p>\n

Install Django and Start New Project<\/strong><\/p>\n

django-admin startproject my_proj\r\ncd my_proj\r\n<\/pre>\n
Create a New App<\/h3>\n
From the Django project directory, we will create a new app called \u201cbooks\u201d to store our books collection:<\/p>\n
py manage.py startapp books<\/pre>\n
We will also need to register the new app in our Django project, add the app \u201cbooks\u201d to the INSTALLED_APPS in your my_proj\/settings.py:<\/p>\n
INSTALLED_APPS = (\r\n :\r\n 'student',\r\n :\r\n )<\/pre>\n
Create the Model<\/h3>\n
The model file would be\u00a0student\/models.py<\/code>:<\/p>\n
from django.db import models\r\n\r\nclass Student(models.Model):\r\n    rollno = models.AutoField(primary_key=True)\r\n    fullname = models.CharField(max_length=30)\r\n    address = models.CharField(max_length=30)\r\n    email = models.CharField(max_length=30)\r\n    age = models.IntegerField()\r\n    des = models.CharField(max_length=30)\r\n\r\nAfter defining the model, you need to provide it to the database:<\/pre>\n
py manage.py makemigrations \r\npy manage.py migrate<\/pre>\n
Admin Interface (Optional)<\/h3>\n
from django.contrib import admin\r\nfrom .models import student\r\n\r\nadmin.site.register(student)<\/pre>\n
The Views<\/h3>\n
We will use Django Class-based views to create our app pages, hence, the file\u00a0student\/views.py<\/code>\u00a0would look like:<\/p>\n
from django.shortcuts import render,redirect\r\nfrom .models import Student\r\ndef SaveStudent(request):\r\n    if request.method=='GET':\r\n        return render(request,'index.html')\r\n    else:\r\n        fullname = request.POST['fulname']\r\n        address = request.POST['add']\r\n        email = request.POST['email']\r\n        age = request.POST['age']\r\n        designation = request.POST['des']\r\n        print(fullname, address, email, age, designation)\r\n\r\n#Method 1, it is commented\r\n        # st = Student()\r\n        # st.fullname = request.POST['fulname']\r\n        # st.address = request.POST['add']\r\n        # st.age = request.POST['age']\r\n        # st.email = request.POST['email']\r\n        # st.des = request.POST['des']\r\n        # st.save()\r\n#Method 2\r\n        stu = Student(fullname=fullname,address=address,email=email,age=age,des=designation)\r\n        stu.save()\r\n        return redirect('\/students\/list\/')\r\n\r\ndef showstudentslist(request):\r\n    all_students = Student.objects.all()\r\n    context = {\r\n        'students':all_students\r\n    }\r\n    return render(request, 'stulist.html', context)\r\n\r\ndef deletestudents(request,id):\r\n    print(id)\r\n    student = Student.objects.get(rollno=id)\r\n    student.delete()\r\n    return  redirect('\/students\/list\/')\r\n\r\ndef updatestudents(request,id):\r\n    student = Student.objects.get(rollno=id)\r\n    context = {\r\n        'roll':student.rollno,\r\n        'fn': student.fullname,\r\n        'add': student.address,\r\n        'em': student.email,\r\n        'age': student.age,\r\n        'des': student.des\r\n    }\r\n    return render(request, 'update.html', context)\r\n\r\ndef updateprocess(request):\r\n    rollno = request.POST['roll']\r\n    fullname = request.POST['fulname']\r\n    address = request.POST['add']\r\n    email = request.POST['email']\r\n    age = request.POST['age']\r\n    designation = request.POST['des']\r\n    print(fullname, address, email, age, designation)\r\n\r\n    st = Student()\r\n    st.rollno = request.POST['roll']\r\n    st.fullname = request.POST['fulname']\r\n    st.address = request.POST['add']\r\n    st.age = request.POST['age']\r\n    st.email = request.POST['email']\r\n    st.des = request.POST['des']\r\n    st.save()\r\n    return redirect('\/students\/list\/')<\/pre>\n
Define the URLs<\/h3>\n
We need to define app URLs in the file\u00a0student\/urls.py<\/code>\u00a0(create the file):<\/p>\n
from django.urls import path\r\nfrom student import views\r\n\r\nurlpatterns = [\r\n    path('save\/', views.SaveStudent),\r\n    path('list\/', views.showstudentslist),\r\n    path('update\/<int:id>', views.updatestudents),\r\n    path('update\/', views.updateprocess),\r\n    path('delete\/<int:id>', views.deletestudents),\r\n]<\/pre>\n
Templates<\/h3>\n
For saving student details<\/h3>\n
<!DOCTYPE html>\r\n<html lang=\"en\">\r\n   <head>\r\n      <meta charset=\"UTF-8\">\r\n      <title>Title<\/title>\r\n   <\/head>\r\n   <body>\r\n      <h1>Student Registration Form<\/h1>\r\n      <form action=\"\/students\/save\/\" method=\"post\">\r\n         {% csrf_token %}\r\n         Full Name : <input name=\"fulname\"><br>\r\n         Address : <input name=\"add\"><br>\r\n         email : <input name=\"email\"><br>\r\n         Age : <input name=\"age\"><br>\r\n         Designation : <input name=\"des\"><br>\r\n         <input type=\"submit\" value=\"Save\">\r\n      <\/form>\r\n   <\/body>\r\n<\/html><\/pre>\n
For Listing all student details<\/h3>\n
{% load static %}\r\n<!DOCTYPE html>\r\n<html lang=\"en\">\r\n   <head>\r\n      <meta charset=\"UTF-8\">\r\n      <title>Title<\/title>\r\n      <link rel=\"stylesheet\" href=\"{% static 'style.css'%}\" type=\"text\/css\">\r\n   <\/head>\r\n   <body>\r\n      <h1 class=\"stu\">Student List<\/h1>\r\n      <table border=\"1\">\r\n         <tr>\r\n            <th>Rollno<\/th>\r\n            <th>Fullname<\/th>\r\n            <th>Address<\/th>\r\n            <th>Email<\/th>\r\n            <th>Age<\/th>\r\n            <th>Action<\/th>\r\n         <\/tr>\r\n         {% for a in students %}\r\n         <tr>\r\n            <td>{{a.rollno}}<\/td>\r\n            <td>{{a.fullname}}<\/td>\r\n            <td>{{a.address}}<\/td>\r\n            <td>{{a.email}}<\/td>\r\n            <td>{{a.age}}<\/td>\r\n            <td><a href=\"\/students\/update\/{{a.rollno}}\">Update<\/a> |\r\n               <a href=\"\/students\/delete\/{{a.rollno}}\">Delete<\/a>\r\n            <\/td>\r\n         <\/tr>\r\n         {% endfor %}\r\n      <\/table>\r\n      {{msg}}\r\n      <a href=\"\/accounts\/logout\/\">logout<\/a>\r\n   <\/body>\r\n<\/html>\r\n<\/pre>\n
For Updating student details<\/h3>\n
<!DOCTYPE html>\r\n<html lang=\"en\">\r\n   <head>\r\n      <meta charset=\"UTF-8\">\r\n      <title>Title<\/title>\r\n   <\/head>\r\n   <body>\r\n      <h1>Student Registration Form<\/h1>\r\n      <form action=\"\/students\/update\/\" method=\"post\">\r\n         {% csrf_token %}\r\n         <input type=\"hidden\" name=\"roll\" value=\"{{roll}}\"><br>\r\n         Full Name : <input name=\"fulname\" value=\"{{fn}}\"><br>\r\n         Address : <input name=\"add\" value=\"{{add}}\"><br>\r\n         email : <input name=\"email\" value=\"{{em}}\"><br>\r\n         Age : <input name=\"age\" value=\"{{age}}\"><br>\r\n         Designation : <input name=\"des\" value=\"{{des}}\"><br>\r\n         <input type=\"submit\" value=\"Save\">\r\n      <\/form>\r\n   <\/body>\r\n<\/html>\r\n\r\nWe hope you enjoyed the blog. We will be happy to hear your feedback. please visit www.vytcdc.com<\/pre>\n
 <\/p>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
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