#DJANGO PYTHON EXAMPLE WEBSITE CODE#

Having worked with many templating systems myself over the years, I whole-heartedly endorse this approach-the philosophy and design behind the DTL is one of the major advantages of the Django framework. This is the philosophy behind custom template tags and filters.

The template system should recognize that advanced template authors may want to extend its technology. This is another reason why the template system doesnвЂ™t allow arbitrary execution of Python code. The template system should forbid the inclusion of malicious code-such as commands that delete database records.

Therefore, the template language should not assume Python knowledge. The Django template system recognizes designers, not programmers, usually create templates. The goal is to offer just enough programming-esque functionality, such as branching and looping, essential for making presentation-related decisions.

The goal is not to invent a programming language. The template system intentionally doesnвЂ™t allow Any whitespace thatвЂ™s not in a template tag should be displayed. If a template includes whitespace, the system should treat it as it treats text- display it. The template system shouldnвЂ™t do magic things with whitespace. That is too severe of a limitation and wouldnвЂ™t allow the syntax to be as concise as it is.Дjango expects template authors to be comfortable editing HTML directly. The template system shouldnвЂ™t be designed so templates display nicely in WYSIWYG editors such as Dreamweaver. Using an XML engine to parse templates introduces a whole new world of human error in editing templates-and incurs an unacceptable level of overhead in template processing. XML should not be used for template languages It should be equally good at generating other text-based formats, or plain text. The template system shouldnвЂ™t just output HTML. This is the philosophy behind template inheritance. The Django template system should make it easy to store those elements in a single place, eliminating duplicate code. Most dynamic web sites use many common site-wide design elements-a common header, footer, navigation bar, etc. The template system shouldnвЂ™t support functionality that goes beyond this primary goal. They are:ДЄ template system is a tool to control presentation and presentation-related logic-and thatвЂ™s it. These philosophies remain core to Django today.

#DJANGO PYTHON EXAMPLE WEBSITE CODE#

While the DTL is similar to other template languages that embed template code in plain HTML, the original creators of Django had a specific set of philosophies in mind when creating the DTL. A designer need only leave HTML comments in the template for a programmer to replace with template tags-plain text markup tags defined by the Django Template Language (DTL). This means a designer can create a complete frontend (HTML, CSS, imagery and user interaction) without having to write a single line of Python or Django code. ItвЂ™s essential to understand that DjangoвЂ™s templates are not Python code embedded into HTML itвЂ™s not possible to execute Python code in a Django template. Template Design PhilosophyДjangoвЂ™s approach to web design is simple-keep Django logic and code separate from design. For example, a modern website will add Cascading Style Sheets (CSS), semantic markup and JavaScript in the frontend to create the user experience, with a backend like Django supplying the data to show in the template. Modern interactive websites are more complex.

All websites-from simple, static websites to interactive web applications that work on multiple devices-are built on HTML. Site templates, at their most basic, are HTML files displayed by your browser. This is a long way from a fully functioning modern website-for one, we are missing a site template. In Chapter 5, we created a view to show a simple title and calendar in the browser.

Django python example website