Execute the CRUD Operation in Django with SQLite Database

Ahmed — Mon, 18 Jan 2021 12:30:14 +0000

In this tutorial, we will learn how to do CRUD Operations using Django with SQLite Database. In this tutorial, we will Create, Retrieve, Update, and delete records from a database table. So, we will see a step-by-step procedure to do this.

After Creating the Django App let’s create a model that contains table name and fields

http://labpys.com/how-to-create-login-page-using-django-python/

models.py

from django.db import models
from Django import forms 

class tbl_Companydetails(models.Model):
  #  Id = models.IntegerField() 
    companyName =  models.CharField(max_length = 150)
    Address = models.CharField(max_length = 500)
    contactNo = models.CharField(max_length=15)
    establisheddate = models.DateField(null=True, blank=True)
    websitelink = models.CharField(max_length=50,default='')
    emailaddress = models.CharField(max_length=50,default='')   
  #  companylogo =models.FileField()

    def __str__(self):
        return self.companyName
    ddlcompanyobjects = models. Manager()

After creating model then create forms.py file

from django import forms
from crispy_forms.helper import FormHelper
from crispy_forms.layout import Layout, Div, Submit, Row, Column, Field

from .models import tbl_Companydetails

class Companymaster(forms.ModelForm):
    class Meta:
        model = tbl_Companydetails
        fields=['companyName','Address','contactNo','establisheddate','websitelink','emailaddress']

creating model execute commands

python manage.py makemigrations

python manage.py migrate

Then create a method to retrieve and insert data in a database table using view.

Views.py

from django.shortcuts import render,redirect
from django.contrib.auth import login,authenticate
from .models import tbl_Authentication,tbl_Companydetails
from .forms import Companymaster
from django.shortcuts import render, redirect ,get_object_or_404 
from django.contrib import messages 

def CreatecompanyNew(request):
    ddlcompanyobjects= tbl_Companydetails.ddlcompanyobjects.all()

    if request.method == 'POST':
        form = Companymaster(request.POST)
        print(form.errors,form)
        if form.is_valid(): 
            user = form.save(commit=False)                
            user.save()                
            return render(request,'company.html',{'form':form,'ddlcompanyobjects':ddlcompanyobjects})
    else:
        form = Companymaster()
    return render(request,'company.html',{'form':form,'ddlcompanyobjects':ddlcompanyobjects})

edits existing records

def Editcompany(request, id):      
    ddlcompanyobjects = tbl_Companydetails.ddlcompanyobjects.get(id=id)      
    return render(request,'EditCompany.html', {'ddlcompanyobjects':ddlcompanyobjects})  

 
def Updatecompany(request, id):
        print('t')          
        obj= get_object_or_404(tbl_Companydetails, id=id)       
        form = Companymaster(request.POST, instance= obj)
        context= {'form': form}
        print(obj)
        if form.is_valid():
            ddlcompanyobjects = tbl_Companydetails.ddlcompanyobjects.all()               
            user = form.save(commit=False)      
            user.save()       
            messages.success(request, "You successfully updated the Data")
            context= {'form': form}                           
            return render(request, 'company.html',{'form':form,'ddlcompanyobjects':ddlcompanyobjects})
        else:
            context= {'form': form,
                           'error': 'The Data  was not updated successfully.'}
            return render(request,'company.html' , context)

Delete a record in the table

def Deletecompany(request, id): 
    ddlcompanyobjects = tbl_Companydetails.ddlcompanyobjects.get(id=id)       
    ddlcompanyobjects.delete()
    return redirect('/CreatecompanyNew')

After that add the path to urls.py files

from django.urls import path
from . import views

urlpatterns = [
    path("",views.base,name="base"),
 

    path('CreatecompanyNew/',views.CreatecompanyNew,name='CreatecompanyNew'),
    path('Editcompany/', views.Editcompany,name="Editcompany"),
    path('Updatecompany/', views.Updatecompany,name="Updatecompany"), 
    path('Deletecompany/', views.Deletecompany,name="Deletecompany"), 
    
]

Once writing views and models is over then move to the templates folder to create html page named Company.html, here I am using Django with boostrap4.

{%  block title %} Company {%  endblock %} 
 
{% block content %} 




{% csrf_token %}


        
          
            
              Company Details
           
              
             
            
                  
                    Company Name *
                    
                     
                   

                   
                    Address*
                    
                     
                         
                      
            
                   
                    Contact No*
                    
                     
                   

                   
                    Established date*
                    
                     
                   
                            
            

            
              
               Website URL*
               
                
              

              
               Email address*
               
                
              
                       
       

        
       
       

            
              
                
                              
              
            
          

          
            
              
                
                  
        {% for company in ddlcompanyobjects %}
          

        {% empty %}
          
        {% endfor %}
                  

        
            
              SLNO
              Company Name
              Address
              Contact No
              Established Date
              Email
              Website Url
              Action              
            
          
      
      
            {{ company.id   }}
            {{ company.companyName   }}
            {{ company.Address  }} 
            {{ company.contactNo  }} 
            {{ company.establisheddate  }} 
            {{ company.emailaddress   }} 
            {{company.websitelink}} 
            
                Edit
                 Delete 
              
       
          

            No Data
          
    
          
        
            
          
        
 


{% endblock %}

SLNO	Company Name	Address	Contact No	Established Date	Email	Website Url	Action
{{ company.id }}	{{ company.companyName }}	{{ company.Address }}	{{ company.contactNo }}	{{ company.establisheddate }}	{{ company.emailaddress }}	{{company.websitelink}}	Edit Delete
No Data

Editcompany.html

{%  block title %} Company {%  endblock %}

 

{% block content %}
 
 

{% csrf_token %}


        
          
            
              Company Details
           
              
             
            
                  
                    Company Name *
                    
                     
                   

                   
                    Address*
                    
                     
                        
                       
                   
                   
                    Contact No*
                    
                     
                   

                   
                    Established date*
                    
                     
                   
                            
            

            
              
               Website URL*
               
                
              

              
               Email address*
               
                
              
                       

       
       

       
       
        

            
            
              
                
                              
              
            
          
        
        


 

{% endblock %}

then execute command

python manage.py runserver

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