HOW TO PAGINATE WITH DJANGO The Paginator. The paginator classes lives in django.core.paginator.We will be working mostly with the Paginator and Page classes.. Consider the auth.User table has 53 user instances.. from django.contrib.auth.models import User from django.core.paginator import Paginator user_list = User. objects. all paginator = Paginator (user_list, 10). In the example above I’m telling Paginator to HOW TO FILTER QUERYSETS DYNAMICALLY HOW TO USE CHART.JS WITH DJANGO Chart.js is a cool open source JavaScript library that helps you render HTML5 charts. It is responsive and counts with8 different chart

types.

HOW TO ADD USER PROFILE TO DJANGO ADMIN HOW TO USE BOOTSTRAP 4 FORMS WITH DJANGO This is a quick tutorial to get you start with django-crispy-forms and never look back. Crispy-forms is a great application that gives you control over how you render Django forms, without breaking the default

behavior.

DJANGO TIPS #5 HOW TO MERGE QUERYSETS The querysets can be merged like in the example below, using the | operator: stories = django_stories | vitor_stories # merge querysets. And you still can perform queryset operations: recent_stories = stories.distinct().order_by('-date') It’s important to note that the merge/combine operator | only works on querysets from the

same model

HOW TO USE CELERY AND RABBITMQ WITH DJANGOSEE MORE ON SIMPLEISBETTERTHANCOMPLEX.COM HOW TO IMPLEMENT DEPENDENT/CHAINED DROPDOWN LIST WITH DJANGOSEE MORE ON SIMPLEISBETTERTHANCOMPLEX.COM HOW TO EXTEND DJANGO USER MODEL We tell Django this is a Proxy Model by adding the following property inside the Meta class: proxy = True. In this case I’ve redefined the default ordering, assigned a custom Manager to the model, and also defined a new method do_something. It is worth noting that User.objects.all () and Person.objects.all () will query the same

database table.

HOW TO USE DJANGO'S BUILT-IN LOGIN SYSTEMSEE MORE ON SIMPLEISBETTERTHANCOMPLEX.COM HOW TO PAGINATE WITH DJANGO The Paginator. The paginator classes lives in django.core.paginator.We will be working mostly with the Paginator and Page classes.. Consider the auth.User table has 53 user instances.. from django.contrib.auth.models import User from django.core.paginator import Paginator user_list = User. objects. all paginator = Paginator (user_list, 10). In the example above I’m telling Paginator to HOW TO FILTER QUERYSETS DYNAMICALLY HOW TO USE CHART.JS WITH DJANGO Chart.js is a cool open source JavaScript library that helps you render HTML5 charts. It is responsive and counts with8 different chart

types.

HOW TO ADD USER PROFILE TO DJANGO ADMIN HOW TO USE BOOTSTRAP 4 FORMS WITH DJANGO This is a quick tutorial to get you start with django-crispy-forms and never look back. Crispy-forms is a great application that gives you control over how you render Django forms, without breaking the default

behavior.

DJANGO TIPS #5 HOW TO MERGE QUERYSETS The querysets can be merged like in the example below, using the | operator: stories = django_stories | vitor_stories # merge querysets. And you still can perform queryset operations: recent_stories = stories.distinct().order_by('-date') It’s important to note that the merge/combine operator | only works on querysets from the

same model

HOW TO USE CELERY AND RABBITMQ WITH DJANGOSEE MORE ON SIMPLEISBETTERTHANCOMPLEX.COM HOW TO IMPLEMENT DEPENDENT/CHAINED DROPDOWN LIST WITH DJANGOSEE MORE ON SIMPLEISBETTERTHANCOMPLEX.COM HOW TO EXTEND DJANGO USER MODEL We tell Django this is a Proxy Model by adding the following property inside the Meta class: proxy = True. In this case I’ve redefined the default ordering, assigned a custom Manager to the model, and also defined a new method do_something. It is worth noting that User.objects.all () and Person.objects.all () will query the same

database table.

HOW TO USE DJANGO'S BUILT-IN LOGIN SYSTEMSEE MORE ON SIMPLEISBETTERTHANCOMPLEX.COM HOW TO USE BOOTSTRAP 4 FORMS WITH DJANGO This is a quick tutorial to get you start with django-crispy-forms and never look back. Crispy-forms is a great application that gives you control over how you render Django forms, without breaking the default

behavior.

HOW TO ADD USER PROFILE TO DJANGO ADMIN Editing The User Profile. The trick is very simple. We will extend the default UserAdmin, add the profile instance as an inline and switch the UserAdmin Django uses.. admin.py. from django.contrib import admin from django.contrib.auth.admin import UserAdmin from django.contrib.auth.models import User from.models import Profile class ProfileInline (admin. StackedInline): model = Profile can A COMPLETE BEGINNER'S GUIDE TO DJANGO It’s a complete beginner’s guide to start learning Django. The material is divided into seven parts. We’re going to explore all the basic concepts in great detail, from installation, preparation of the development environment, models, views, templates, URLs to more advanced topics such as migrations, testing, and deployment. HOW TO CREATE GROUP BY QUERIES WITH DJANGO ORM This data is from Wikipedia, and I don’t know to what extent it is correct, but for our example it doesn’t really matter. Considering the whole dataset, if we wanted to know the total of habitants in all the 84 cities, we could perhaps use an aggregate query:. from django.db.models import Sum City. objects. aggregate (Sum ('population')) {'population__sum': 970880224} # 970,880,224 HOW TO USE DJANGO'S BUILT-IN LOGIN SYSTEM Now, a very important configuration is done in the settings.py file, which is the URL Django will redirect the user after a successful authentication. Inside the settings.py file add: LOGIN_REDIRECT_URL = 'home'. The value can be a hardcoded URL or a URL name. The default value for LOGIN_REDIRECT_URL is /accounts/profile/. HOW TO USE DATE PICKER WITH DJANGO Introduction. The implementation of a date picker is mostly done on the front-end. The key part of the implementation is to assure Django will receive the date input value in the correct format, and also that Django will be able to reproduce the format when rendering a form with

initial data.

HOW TO RESET MIGRATIONS 3. Remove the actual migration files. Go through each of your projects apps migration folder and remove everything inside, except for the __init__.py file. Or if you are using a unix-like OS you can run the following script (inside your project dir): find . -path "*/migrations/*.py" -not -name "__init__.py" -delete find . -path

"*/migrations

HOW TO SETUP A SSL CERTIFICATE ON NGINX FOR A DJANGO Getting a SSL Certificate. The first step is to get a SSL for your Django Application. There are a few options: you can generate your own certificate, you can get a free one from Let’s Encrypt or you can purchase one from the many companies on the internet.. In this tutorial I will use a simple commercial SSL certificate by Positive SSL registered from Namecheap. HOW TO IMPLEMENT CRUD USING AJAX AND JSON How to Implement CRUD Using Ajax and Json. Using Ajax to create asynchronous request to manipulate Django models is a very common use case. It can be used to provide an in line edit in a table, or create a new model instance without going back and forth in the website. It also bring some challenges, such as keeping the state of the objects HOW TO RENDER DJANGO FORM MANUALLY Conclusions. This article become bigger than I anticipated. I first thought about writing just a quick tutorial about form rendering. Then I remembered that I already had a to-the-point tutorial explaining how to use the django-widget-tweaks.So, instead I decided to dive deep into the details and explore some of the mechanics of the forms API. HOW TO USE CHART.JS WITH DJANGO Chart.js is a cool open source JavaScript library that helps you render HTML5 charts. It is responsive and counts with8 different chart

types.

HOW TO PAGINATE WITH DJANGO The Paginator. The paginator classes lives in django.core.paginator.We will be working mostly with the Paginator and Page classes.. Consider the auth.User table has 53 user instances.. from django.contrib.auth.models import User from django.core.paginator import Paginator user_list = User. objects. all paginator = Paginator (user_list, 10). In the example above I’m telling Paginator to ADVANCED FORM RENDERING WITH DJANGO CRISPY FORMS Advanced Form Rendering with Django Crispy Forms. In this tutorial we are going to explore some of the Django Crispy Forms features to handle advanced/custom forms rendering. This blog post started as a discussion in our community forum , so I decided to compile the insights and solutions in a HOW TO ADD USER PROFILE TO DJANGO ADMIN HOW TO USE BOOTSTRAP 4 FORMS WITH DJANGO This is a quick tutorial to get you start with django-crispy-forms and never look back. Crispy-forms is a great application that gives you control over how you render Django forms, without breaking the default

behavior.

HOW TO USE DATE PICKER WITH DJANGO Introduction. The implementation of a date picker is mostly done on the front-end. The key part of the implementation is to assure Django will receive the date input value in the correct format, and also that Django will be able to reproduce the format when rendering a form with

initial data.

DJANGO TIPS #5 HOW TO MERGE QUERYSETS The querysets can be merged like in the example below, using the | operator: stories = django_stories | vitor_stories # merge querysets. And you still can perform queryset operations: recent_stories = stories.distinct().order_by('-date') It’s important to note that the merge/combine operator | only works on querysets from the

same model

HOW TO DEPLOY A DJANGO APPLICATION ON RHEL 7 sudo yum -y install git gcc python-virtualenv. Create a system user for the application: sudo groupadd --system urbantrain sudo useradd --system --gid urbantrain --shell /bin/bash --home /opt/urban-train urbantrain. Create the Django project home inside /opt: sudo mkdir /opt/urban-train. Give the permissions to the urbantrain user: HOW TO IMPLEMENT TOKEN AUTHENTICATION USING DJANGO REST In this tutorial you are going to learn how to implement Token-based authentication using Django REST Framework (DRF). The token authentication works by exchanging username and password for a token that will be used in all subsequent requests so to identify the user

on the server side.

HOW TO IMPLEMENT DEPENDENT/CHAINED DROPDOWN LIST WITH DJANGOSEE MORE ON SIMPLEISBETTERTHANCOMPLEX.COM HOW TO USE CHART.JS WITH DJANGO Chart.js is a cool open source JavaScript library that helps you render HTML5 charts. It is responsive and counts with8 different chart

types.

HOW TO PAGINATE WITH DJANGO The Paginator. The paginator classes lives in django.core.paginator.We will be working mostly with the Paginator and Page classes.. Consider the auth.User table has 53 user instances.. from django.contrib.auth.models import User from django.core.paginator import Paginator user_list = User. objects. all paginator = Paginator (user_list, 10). In the example above I’m telling Paginator to ADVANCED FORM RENDERING WITH DJANGO CRISPY FORMS Advanced Form Rendering with Django Crispy Forms. In this tutorial we are going to explore some of the Django Crispy Forms features to handle advanced/custom forms rendering. This blog post started as a discussion in our community forum , so I decided to compile the insights and solutions in a HOW TO ADD USER PROFILE TO DJANGO ADMIN HOW TO USE BOOTSTRAP 4 FORMS WITH DJANGO This is a quick tutorial to get you start with django-crispy-forms and never look back. Crispy-forms is a great application that gives you control over how you render Django forms, without breaking the default

behavior.

HOW TO USE DATE PICKER WITH DJANGO Introduction. The implementation of a date picker is mostly done on the front-end. The key part of the implementation is to assure Django will receive the date input value in the correct format, and also that Django will be able to reproduce the format when rendering a form with

initial data.

DJANGO TIPS #5 HOW TO MERGE QUERYSETS The querysets can be merged like in the example below, using the | operator: stories = django_stories | vitor_stories # merge querysets. And you still can perform queryset operations: recent_stories = stories.distinct().order_by('-date') It’s important to note that the merge/combine operator | only works on querysets from the

same model

HOW TO DEPLOY A DJANGO APPLICATION ON RHEL 7 sudo yum -y install git gcc python-virtualenv. Create a system user for the application: sudo groupadd --system urbantrain sudo useradd --system --gid urbantrain --shell /bin/bash --home /opt/urban-train urbantrain. Create the Django project home inside /opt: sudo mkdir /opt/urban-train. Give the permissions to the urbantrain user: HOW TO IMPLEMENT TOKEN AUTHENTICATION USING DJANGO REST In this tutorial you are going to learn how to implement Token-based authentication using Django REST Framework (DRF). The token authentication works by exchanging username and password for a token that will be used in all subsequent requests so to identify the user

on the server side.

HOW TO IMPLEMENT DEPENDENT/CHAINED DROPDOWN LIST WITH DJANGOSEE MORE ON SIMPLEISBETTERTHANCOMPLEX.COM HOW TO PAGINATE WITH DJANGO The Paginator. The paginator classes lives in django.core.paginator.We will be working mostly with the Paginator and Page classes.. Consider the auth.User table has 53 user instances.. from django.contrib.auth.models import User from django.core.paginator import Paginator user_list = User. objects. all paginator = Paginator (user_list, 10). In the example above I’m telling Paginator to HOW TO CREATE GROUP BY QUERIES WITH DJANGO ORM This data is from Wikipedia, and I don’t know to what extent it is correct, but for our example it doesn’t really matter. Considering the whole dataset, if we wanted to know the total of habitants in all the 84 cities, we could perhaps use an aggregate query:. from django.db.models import Sum City. objects. aggregate (Sum ('population')) {'population__sum': 970880224} # 970,880,224 HOW TO CREATE DJANGO ADMIN LIST ACTIONS Creating the Action Function. Each action in the list is a regular Python function that takes three parameters: the current ModelAdmin, a HttpRequest object (just like a view function) and a QuerySet, which is the list of selected model instances.. Those Action Functions can live inside the admin.py module of your app. But if they start to get really big, you can define them outside the admin.py. HOW TO CREATE INFINITE SCROLL WITH DJANGO How to Create Infinite Scroll With Django. In this tutorial I will show you how to implement a very simple infinite scrolling with Django. Basically we will take advantage of Django’s pagination API and a jQuery plug-in. You will find examples using both function-based views and class-based views. DJANGO TIPS #5 HOW TO MERGE QUERYSETS The querysets can be merged like in the example below, using the | operator: stories = django_stories | vitor_stories # merge querysets. And you still can perform queryset operations: recent_stories = stories.distinct().order_by('-date') It’s important to note that the merge/combine operator | only works on querysets from the

same model

HOW TO USE CELERY AND RABBITMQ WITH DJANGO Task queues are used as a strategy to distribute the workload between threads/machines. In this tutorial I will explain how to install and setup Celery + RabbitMQ to execute asynchronous in a Django application. To work with Celery, we also need to install RabbitMQ because Celery requires an external solution to send and receive

messages.

HOW TO USE RESTFUL APIS WITH DJANGO How to Use RESTful APIs with Django. First, let’s get those terms out of our way. The REST acronym stands for Representational State Transfer , which is an architectural design. Usually when we use the term RESTful, we are referring to an application that implements the REST architectural design. API stands for Application Programming HOW TO SETUP A SSL CERTIFICATE ON NGINX FOR A DJANGO Getting a SSL Certificate. The first step is to get a SSL for your Django Application. There are a few options: you can generate your own certificate, you can get a free one from Let’s Encrypt or you can purchase one from the many companies on the internet.. In this tutorial I will use a simple commercial SSL certificate by Positive SSL registered from Namecheap. DATE TEMPLATE FILTER Date Template Filter. List of the most used Django date template filters to format date according to a given format, semantically

ordered.

HOW TO IMPLEMENT CASE-INSENSITIVE USERNAME Option 1: Extending The User Model. This is the best option if your project is in the beginning and you can afford swapping the authentication User. Actually any of the strategies described in the How to Extend Django User Model will work (except for the Proxy model, because the AUTH_USER_MODEL can’t be a Proxy). HOW TO FILTER QUERYSETS DYNAMICALLY HOW TO PAGINATE WITH DJANGO The Paginator. The paginator classes lives in django.core.paginator.We will be working mostly with the Paginator and Page classes.. Consider the auth.User table has 53 user instances.. from django.contrib.auth.models import User from django.core.paginator import Paginator user_list = User. objects. all paginator = Paginator (user_list, 10). In the example above I’m telling Paginator to HOW TO USE CHART.JS WITH DJANGO Chart.js is a cool open source JavaScript library that helps you render HTML5 charts. It is responsive and counts with8 different chart

types.

A COMPLETE BEGINNER'S GUIDE TO DJANGO DJANGO TIPS #5 HOW TO MERGE QUERYSETS The querysets can be merged like in the example below, using the | operator: stories = django_stories | vitor_stories # merge querysets. And you still can perform queryset operations: recent_stories = stories.distinct().order_by('-date') It’s important to note that the merge/combine operator | only works on querysets from the

same model

HOW TO CREATE USER SIGN UP VIEW Basic Sign Up. The most simple way to implement a user sign up is by using the UserCreationForm as it is. This strategy is suitable in case you are using the default Django user, using username to authenticate and is interested only in setting HOW TO EXTEND DJANGO USER MODEL We tell Django this is a Proxy Model by adding the following property inside the Meta class: proxy = True. In this case I’ve redefined the default ordering, assigned a custom Manager to the model, and also defined a new method do_something. It is worth noting that User.objects.all () and Person.objects.all () will query the same

database table.

HOW TO USE CELERY AND RABBITMQ WITH DJANGOSEE MORE ON SIMPLEISBETTERTHANCOMPLEX.COM HOW TO RESET MIGRATIONS 3. Remove the actual migration files. Go through each of your projects apps migration folder and remove everything inside, except for the __init__.py file. Or if you are using a unix-like OS you can run the following script (inside your project dir): find . -path "*/migrations/*.py" -not -name "__init__.py" -delete find . -path

"*/migrations

HOW TO WORK WITH AJAX REQUEST WITH DJANGOSEE MORE ON SIMPLEISBETTERTHANCOMPLEX.COM HOW TO FILTER QUERYSETS DYNAMICALLY HOW TO PAGINATE WITH DJANGO The Paginator. The paginator classes lives in django.core.paginator.We will be working mostly with the Paginator and Page classes.. Consider the auth.User table has 53 user instances.. from django.contrib.auth.models import User from django.core.paginator import Paginator user_list = User. objects. all paginator = Paginator (user_list, 10). In the example above I’m telling Paginator to HOW TO USE CHART.JS WITH DJANGO Chart.js is a cool open source JavaScript library that helps you render HTML5 charts. It is responsive and counts with8 different chart

types.

A COMPLETE BEGINNER'S GUIDE TO DJANGO DJANGO TIPS #5 HOW TO MERGE QUERYSETS The querysets can be merged like in the example below, using the | operator: stories = django_stories | vitor_stories # merge querysets. And you still can perform queryset operations: recent_stories = stories.distinct().order_by('-date') It’s important to note that the merge/combine operator | only works on querysets from the

same model

HOW TO CREATE USER SIGN UP VIEW Basic Sign Up. The most simple way to implement a user sign up is by using the UserCreationForm as it is. This strategy is suitable in case you are using the default Django user, using username to authenticate and is interested only in setting HOW TO EXTEND DJANGO USER MODEL We tell Django this is a Proxy Model by adding the following property inside the Meta class: proxy = True. In this case I’ve redefined the default ordering, assigned a custom Manager to the model, and also defined a new method do_something. It is worth noting that User.objects.all () and Person.objects.all () will query the same

database table.

HOW TO USE CELERY AND RABBITMQ WITH DJANGOSEE MORE ON SIMPLEISBETTERTHANCOMPLEX.COM HOW TO RESET MIGRATIONS 3. Remove the actual migration files. Go through each of your projects apps migration folder and remove everything inside, except for the __init__.py file. Or if you are using a unix-like OS you can run the following script (inside your project dir): find . -path "*/migrations/*.py" -not -name "__init__.py" -delete find . -path

"*/migrations

HOW TO WORK WITH AJAX REQUEST WITH DJANGOSEE MORE ON SIMPLEISBETTERTHANCOMPLEX.COM HOW TO PAGINATE WITH DJANGO The Paginator. The paginator classes lives in django.core.paginator.We will be working mostly with the Paginator and Page classes.. Consider the auth.User table has 53 user instances.. from django.contrib.auth.models import User from django.core.paginator import Paginator user_list = User. objects. all paginator = Paginator (user_list, 10). In the example above I’m telling Paginator to HOW TO USE CHART.JS WITH DJANGO Chart.js is a cool open source JavaScript library that helps you render HTML5 charts. It is responsive and counts with8 different chart

types.

HOW TO EXPORT TO PDF Writing a PDF to Response. In the example below I’m using the Django’s FileSystemStorage class. It will also work if you simply use open() instead. The FileSystemStorage sets the base_url to the project’s MEDIA_ROOT.. from django.core.files.storage import FileSystemStorage from django.http import HttpResponse, HttpResponseNotFound def pdf_view (request): fs = FileSystemStorage HOW TO CREATE USER SIGN UP VIEW Basic Sign Up. The most simple way to implement a user sign up is by using the UserCreationForm as it is. This strategy is suitable in case you are using the default Django user, using username to authenticate and is interested only in setting HOW TO USE BOOTSTRAP 4 FORMS WITH DJANGO This is a quick tutorial to get you start with django-crispy-forms and never look back. Crispy-forms is a great application that gives you control over how you render Django forms, without breaking the default

behavior.

HOW TO USE DATE PICKER WITH DJANGO Introduction. The implementation of a date picker is mostly done on the front-end. The key part of the implementation is to assure Django will receive the date input value in the correct format, and also that Django will be able to reproduce the format when rendering a form with

initial data.

HOW TO UPLOAD FILES WITH DJANGO In this tutorial you will learn the concepts behind Django file upload and how to handle file upload using model forms. In the end of this post you will find the source code of the examples I used so you can

try and explore.

HOW TO RENDER DJANGO FORM MANUALLY Conclusions. This article become bigger than I anticipated. I first thought about writing just a quick tutorial about form rendering. Then I remembered that I already had a to-the-point tutorial explaining how to use the django-widget-tweaks.So, instead I decided to dive deep into the details and explore some of the mechanics of the forms API. HOW TO WORK WITH AJAX REQUEST WITH DJANGO Ajax Request. Let’s implement an asynchronous request to validate if the username is already taken or not. First we gotta have a look on the HTML generated by the {{ form.as_p }}. We want to inspect the username field, which looks like that: What we need here is its ID, which is id_username. HOW TO USE DJANGO'S BUILT-IN LOGIN SYSTEM Now, a very important configuration is done in the settings.py file, which is the URL Django will redirect the user after a successful authentication. Inside the settings.py file add: LOGIN_REDIRECT_URL = 'home'. The value can be a hardcoded URL or a URL name. The default value for LOGIN_REDIRECT_URL is /accounts/profile/. HOW TO USE CHART.JS WITH DJANGO Chart.js is a cool open source JavaScript library that helps you render HTML5 charts. It is responsive and counts with8 different chart

types.

HOW TO USE DATE PICKER WITH DJANGO Introduction. The implementation of a date picker is mostly done on the front-end. The key part of the implementation is to assure Django will receive the date input value in the correct format, and also that Django will be able to reproduce the format when rendering a form with

initial data.

HOW TO PAGINATE WITH DJANGO The Paginator. The paginator classes lives in django.core.paginator.We will be working mostly with the Paginator and Page classes.. Consider the auth.User table has 53 user instances.. from django.contrib.auth.models import User from django.core.paginator import Paginator user_list = User. objects. all paginator = Paginator (user_list, 10). In the example above I’m telling Paginator to DJANGO TIPS #5 HOW TO MERGE QUERYSETS This tip is particularly useful when you want to merge two or more querysets into a single queryset without losing the capabilities of performing filter, count, distinct, etc. operations.. Consider the

following models:

HOW TO IMPLEMENT DEPENDENT/CHAINED DROPDOWN LIST WITH DJANGOSEE MORE ON SIMPLEISBETTERTHANCOMPLEX.COM HOW TO USE BOOTSTRAP 4 FORMS WITH DJANGO This is a quick tutorial to get you start with django-crispy-forms and never look back. Crispy-forms is a great application that gives you control over how you render Django forms, without breaking the default

behavior.

HOW TO CREATE GROUP BY QUERIES WITH DJANGO ORM This data is from Wikipedia, and I don’t know to what extent it is correct, but for our example it doesn’t really matter. Considering the whole dataset, if we wanted to know the total of habitants in all the 84 cities, we could perhaps use an aggregate query:. from django.db.models import Sum City. objects. aggregate (Sum ('population')) {'population__sum': 970880224} # 970,880,224 HOW TO DEPLOY A DJANGO APPLICATION ON RHEL 7 Python Virtual Environment. First, log in with the urbantrain system user:. sudo su - urbantrain. Start a new python-virtualenv inside the /opt/urban-train directory:. virtualenv venv. Activate the python-virtualenv:. source venv/bin/activate. Create a directory named logs that will be used by Gunicorn and Nginx to write the logs:. mkdir

logs

HOW TO IMPLEMENT TOKEN AUTHENTICATION USING DJANGO REST In this tutorial you are going to learn how to implement Token-based authentication using Django REST Framework (DRF). The token authentication works by exchanging username and password for a token that will be used in all subsequent requests so to identify the user

on the server side.

HOW TO ADD USER PROFILE TO DJANGO ADMINSEE MORE ON SIMPLEISBETTERTHANCOMPLEX.COM HOW TO USE CHART.JS WITH DJANGO Chart.js is a cool open source JavaScript library that helps you render HTML5 charts. It is responsive and counts with8 different chart

types.

HOW TO USE DATE PICKER WITH DJANGO Introduction. The implementation of a date picker is mostly done on the front-end. The key part of the implementation is to assure Django will receive the date input value in the correct format, and also that Django will be able to reproduce the format when rendering a form with

initial data.

HOW TO PAGINATE WITH DJANGO The Paginator. The paginator classes lives in django.core.paginator.We will be working mostly with the Paginator and Page classes.. Consider the auth.User table has 53 user instances.. from django.contrib.auth.models import User from django.core.paginator import Paginator user_list = User. objects. all paginator = Paginator (user_list, 10). In the example above I’m telling Paginator to DJANGO TIPS #5 HOW TO MERGE QUERYSETS This tip is particularly useful when you want to merge two or more querysets into a single queryset without losing the capabilities of performing filter, count, distinct, etc. operations.. Consider the

following models:

HOW TO IMPLEMENT DEPENDENT/CHAINED DROPDOWN LIST WITH DJANGOSEE MORE ON SIMPLEISBETTERTHANCOMPLEX.COM HOW TO USE BOOTSTRAP 4 FORMS WITH DJANGO This is a quick tutorial to get you start with django-crispy-forms and never look back. Crispy-forms is a great application that gives you control over how you render Django forms, without breaking the default

behavior.

HOW TO CREATE GROUP BY QUERIES WITH DJANGO ORM This data is from Wikipedia, and I don’t know to what extent it is correct, but for our example it doesn’t really matter. Considering the whole dataset, if we wanted to know the total of habitants in all the 84 cities, we could perhaps use an aggregate query:. from django.db.models import Sum City. objects. aggregate (Sum ('population')) {'population__sum': 970880224} # 970,880,224 HOW TO DEPLOY A DJANGO APPLICATION ON RHEL 7 Python Virtual Environment. First, log in with the urbantrain system user:. sudo su - urbantrain. Start a new python-virtualenv inside the /opt/urban-train directory:. virtualenv venv. Activate the python-virtualenv:. source venv/bin/activate. Create a directory named logs that will be used by Gunicorn and Nginx to write the logs:. mkdir

logs

HOW TO IMPLEMENT TOKEN AUTHENTICATION USING DJANGO REST In this tutorial you are going to learn how to implement Token-based authentication using Django REST Framework (DRF). The token authentication works by exchanging username and password for a token that will be used in all subsequent requests so to identify the user

on the server side.

HOW TO ADD USER PROFILE TO DJANGO ADMINSEE MORE ON SIMPLEISBETTERTHANCOMPLEX.COM HOW TO PAGINATE WITH DJANGO The Paginator. The paginator classes lives in django.core.paginator.We will be working mostly with the Paginator and Page classes.. Consider the auth.User table has 53 user instances.. from django.contrib.auth.models import User from django.core.paginator import Paginator user_list = User. objects. all paginator = Paginator (user_list, 10). In the example above I’m telling Paginator to HOW TO IMPLEMENT TOKEN AUTHENTICATION USING DJANGO REST In this tutorial you are going to learn how to implement Token-based authentication using Django REST Framework (DRF). The token authentication works by exchanging username and password for a token that will be used in all subsequent requests so to identify the user

on the server side.

HOW TO USE RESTFUL APIS WITH DJANGO First, let’s get those terms out of our way. The REST acronym stands for Representational State Transfer, which is an architectural design.Usually when we use the term RESTful, we are referring to an application that implements the REST architectural design. API stands for Application Programming Interface, which is a software application that we interact programmatically, instead of using a HOW TO CREATE INFINITE SCROLL WITH DJANGO In this tutorial I will show you how to implement a very simple infinite scrolling with Django. Basically we will take advantage of Django’s pagination API and a jQuery plug-in. HOW TO CREATE GROUP BY QUERIES WITH DJANGO ORM This data is from Wikipedia, and I don’t know to what extent it is correct, but for our example it doesn’t really matter. Considering the whole dataset, if we wanted to know the total of habitants in all the 84 cities, we could perhaps use an aggregate query:. from django.db.models import Sum City. objects. aggregate (Sum ('population')) {'population__sum': 970880224} # 970,880,224 HOW TO USE CELERY AND RABBITMQ WITH DJANGO Creating Our First Celery Task. We can create a file named tasks.py inside a Django app and put all our Celery tasks into this file. The Celery app we created in the project root will collect all tasks defined across all Django apps listed in the INSTALLED_APPS configuration.. Just for testing purpose, let’s create a Celery task that generates a number of random User accounts. DATE TEMPLATE FILTER List of the most used Django date template filters to format date according to a given format, semantically ordered. DJANGO TIPS #13 USING F() EXPRESSIONS In the Django QuerySet API, F() expressions are used to refer to model field values directly in the database.Let’s say you have a Product

class with a price

HOW TO IMPLEMENT CASE-INSENSITIVE USERNAME Inspired by a discussion in the How to Extend Django User Model comments, I decided to compile a few options on how to implement a case insensitive authentication using the built in Django User. Thanks to Paul Spiteri for bringing up the question and also to provide a

possible solution!

DJANGO ERROR : HOW TO FIX "APP IS NOT A REGISTERED I used Python 3.7 Django 2.0 My Project Name : fusion My App Name : django_adminlte I used all views and models file are in separated as files and folder. I try to make task like user can upload csv or excel sheet in django app frontend side and usercan click on upload button then after uploaded excel sheet load in html tabel view at web page frontend side but i get below error,how to fixed it

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SIMPLE IS BETTER THAN COMPLEX STORIES ABOUT PYTHON, DJANGO AND WEB DEVELOPMENT

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TUTORIAL

------------------------- HOW TO SAVE EXTRA DATA TO A DJANGO REST FRAMEWORK SERIALIZER

* __ Apr 7, 2019

* __ Vitor Freitas

* __ 3 minutes read

* __ 7 comments

* __ 12,224 views

In this tutorial you are going to learn how to pass extra data to your serializer, before saving it to the database.

Read more

------------------------- django drf serializer

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TUTORIAL

------------------------- HOW TO USE DATE PICKER WITH DJANGO

* __ Jan 3, 2019

* __ Vitor Freitas

* __ 13 minutes read

* __ 24 comments

* __ 51,938 views

In this tutorial we are going to explore three date/datetime pickers options that you can easily use in a Django project. We are going to explore how to do it manually first, then how to set up a custom widget and finally how to use a third-party Django app with support to

datetime pickers.

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------------------------- django date datepicker datetimepicker bs4 bootstrap4

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TUTORIAL

------------------------- HOW TO IMPLEMENT GROUPED MODEL CHOICE FIELD

* __ Jan 2, 2019

* __ Vitor Freitas

* __ 6 minutes read

* __ 4 comments

* __ 20,386 views

The Django forms API have two field types to work with multiple options: ChoiceField and ModelChoiceField.

Read more

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django forms

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TUTORIAL

------------------------- HOW TO USE JWT AUTHENTICATION WITH DJANGO REST FRAMEWORK

* __ Dec 19, 2018

* __ Vitor Freitas

* __ 7 minutes read

* __ 24 comments

* __ 69,149 views

JWT stand for JSON WEB TOKEN and it is an authentication strategy used by client/server applications where the client is a Web application using JavaScript and some frontend framework like Angular, React or

VueJS.

Read more

------------------------- django drf rest api

auth jwt

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TUTORIAL

------------------------- ADVANCED FORM RENDERING WITH DJANGO CRISPY FORMS

* __ Nov 28, 2018

* __ Vitor Freitas

* __ 10 minutes read

* __ 33 comments

* __ 67,595 views

In this tutorial we are going to explore some of the Django Crispy Forms features to handle advanced/custom forms rendering. This blog post started as a discussion in our community forum, so I decided to compile the insights and solutions in a blog post to benefit a wider

audience.

Read more

------------------------- django bootstrap4 bs4

crispy-forms forms

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TUTORIAL

------------------------- HOW TO IMPLEMENT TOKEN AUTHENTICATION USING DJANGO REST FRAMEWORK

* __ Nov 22, 2018

* __ Vitor Freitas

* __ 9 minutes read

* __ 25 comments

* __ 71,003 views

In this tutorial you are going to learn how to implement Token-based authentication using Django REST Framework (DRF). The token authentication works by exchanging username and password for a token that will be used in all subsequent requests so to identify the user

on the server side.

Read more

------------------------- django drf rest api

auth

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ANNOUNCEMENTS

------------------------- LAUNCHING OUR COMMUNITY FORUM

* __ Nov 19, 2018

* __ Vitor Freitas

* __ 1 minute read

* __ 4 comments

* __ 2,190 views

This is a short post just to announce today I’m releasing a community forum for the simpleisbetterthancomplex.com readers! And I want you to be part

of it.

Read more

------------------------- community forum discourse

python django

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VIDEOS

------------------------- DJANGO AUTHENTICATION VIDEO TUTORIAL

* __ Nov 4, 2018

* __ Vitor Freitas

* __ 3 minutes read

* __ 14 comments

* __ 11,742 views

In this tutorial series, we are going to explore Django's authentication system by implementing sign up, login, logout, password change, password reset and protected views from non-authenticated users. This tutorial is organized in 8 videos, one for each topic, ranging from 4 min to 15 min each.

Read more

------------------------- django auth authentication

login signup

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TUTORIAL

------------------------- HOW TO CREATE CUSTOM DJANGO MANAGEMENT COMMANDS

* __ Aug 27, 2018

* __ Vitor Freitas

* __ 14 minutes read

* __ 20 comments

* __ 45,723 views

Django comes with a variety of command line utilities that can be either invoked using django-admin.py or the convenient manage.py script. A nice thing about it is that you can also add your own commands. Those management commands can be very handy when you need to interact with your application via command line using a terminal and it can also serve as an interface to execute cron jobs. In this tutorial you are going to learn how to code your own commands.

Read more

------------------------- django django-admin manage

commands async

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TUTORIAL

------------------------- HOW TO USE BOOTSTRAP 4 FORMS WITH DJANGO

* __ Aug 13, 2018

* __ Vitor Freitas

* __ 7 minutes read

* __ 35 comments

* __ 120,650 views

This is a quick tutorial to get you start with django-crispy-forms

and never look

back. Crispy-forms is a great application that gives you control over how you render Django forms, without breaking the default behavior. This tutorial is going to be tailored towards Bootstrap 4, but it can also be used with older Bootstrap versions as well as with the Foundation framework .

Read more

------------------------- django forms bootstrap

bs4 crispy-forms

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HOW TO IMPLEMENT DEPENDENT/CHAINED DROPDOWN LIST WITH DJANGO SHAKTISINH​ JHALA • 16 hours ago Hey Vitor, Nice post !! however, I will prefer to go for client side solution to avoid server…

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HOW TO USE DJANGO'S BUILT-IN LOGIN SYSTEM MICHAEL HAGANS • 2 days, 12 hours ago Why is createsuperuser telling me 'django.db.utils.OperationalError: no such table: auth_user' ?

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DJANGO MULTIPLE FILES UPLOAD USING AJAX CEMIL ARSLAN • 2 days, 13 hours ago hi vitor, how can i see photos as thumbnail and choose a photo as a default after drag and drop

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HOW TO USE DJANGO'S BUILT-IN LOGIN SYSTEM THANKYOUOMG • 2 days, 17 hours ago i love you, you are my hero

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