Python Django

Hard coded url in your Django template html files or views.py file is a bad practice. Because it is difficult to maintain url changes. If you change one url, you may need to change that url in a lot of pages. So Django provide template url tag and reverse function for you to avoid hard […]

This example will tell you how to add HTTP response headers in Django source code. This example is based on Django Bootstrap3 Example, but you can also create a new Django project to run this example.

Pass parameters via URL in Django is not as same as java or Php which use a question mark and key-value pairs ( for example http://127.0.0.1:8080/login.jsp?username=jerry&password=12345678). Django uses a more clear, readable, and SEO-friendly way to pass parameters in URL like http://127.0.0.1:8080/login/jerry/12345678. The first section after login is the username, and the section after jerry

We have learned how to add many to many fields for Django models in the article How To Operate Foreign Key And Many To Many Field In Django Model. But when we display the many to many field values ( in this example is the Employee’s Department values ) in Django Html template page, we

Django view is just a python function defined in the Django project / app_name / views.py file. The view function will receive and process user request ( generally get model data from backend database table ) and then return a HttpResponse object with a html template. The model data is passed back to the client

When you use SQLite3 as your Django application backend database, you may need to change or even drop tables from the SQLite3 database. This article will tell you how to do that.

When you develop a Django app, you always need to change the model fields. But how to make the changes take effect (add/remove table column to/from backend database table ). To a beginner, this question may be confused. This article will tell you how to do it.

Django model provide an easy way for ORM( object relational mapping) management, with it you even do not need to write sql command. But sometimes you realy need to write your own sql command to improve sql performance or special use case. This example will show you how to run raw sql or get queryset

You have learnd how to use Django model manager’s filter or exclude method to get query result data in article Django Simple CRUD Operation Example. To use filter method is so easy as below. Department.objects.filter(dept_desc__contains=’dev2qa’) <QuerySet [<Department: Development,Develop dev2qa.com website use Django>]> We can see that the filter function’s argument is dept_desc__contains=’dev2qa’, i think this is not difficult

We all know that model data operation in Django is so easy, you do not need to write any sql command at all, what you need to do is just use model class’s attribute objects ‘s methods to create, query, update and delete mode data records in backend database table like below. Suppose our model