Django syncdb not updating database

Rated 4.57/5 based on 870 customer reviews

In this pattern, “Model” refers to the data access layer, “View” refers to the part of the system that selects what to display and how to display it, and “Controller” refers to the part of the system that decides which view to use, depending on user input, accessing the model as needed. The goal of explicitly defining patterns such as MVC is mostly to streamline communication among developers.

Instead of having to tell your coworkers, “Let’s make an abstraction of the data access, then let’s have a separate layer that handles data display, and let’s put a layer in the middle that regulates this,” you can take advantage of a shared vocabulary and say, “Let’s use the MVC pattern here.” If you’re familiar with other MVC Web-development frameworks, such as Ruby on Rails, you may consider Django views to be the “controllers” and Django templates to be the “views.” This is an unfortunate confusion brought about by differing interpretations of MVC.

In this example view, we use the Before we delve into any more code, let’s take a moment to consider the overall design of a database-driven Django Web application.

As we mentioned in previous chapters, Django is designed to encourage loose coupling and strict separation between pieces of an application.

(Note: While it’s not strictly necessary to know basic relational database theory and SQL in order to use Django’s database layer, it’s highly recommended.

An introduction to those concepts is beyond the scope of this book, but keep reading even if you’re a database newbie.

Many complex Web sites provide some combination of the two.

We’ll assume you’ve set up a database server, activated it, and created a database within it (e.g., using a is a way to run the Python interpreter with the correct Django settings activated.

This is necessary in our case, because Django needs to know which settings file to use in order to get your database connection information.) In the shell, type these commands to test your database configuration: – a bundle of Django code, including models and views, that lives together in a single Python package and represents a full Django application.

In Django’s interpretation of MVC, the “view” describes the data that gets presented to the user; it’s not necessarily just With all of that philosophy in mind, let’s start exploring Django’s database layer.

First, we need to take care of some initial configuration; we need to tell Django which database server to use and how to connect to it.

Leave a Reply