Django, What is it, Why is it cool?
Download as PPT, PDF8 likes6,474 views
Django is an open-source Python framework that provides a robust platform for developing web applications, featuring a model-view-template (MVT) architecture. It supports multiple databases and is compatible with various operating systems, allowing for high performance and extensive customization. Additionally, Django's ecosystem includes numerous libraries and tools, enhancing capabilities in business logic, templating, and optimization.
Django, What is it, Why is it cool?
- 1. Django, What is it, Why is it cool? 'Cause it is built on Python and has Pinax on top, and they are all Open Source http://oswco.com
- 2. Why do I care? Open Source Low cost Platform Agnostic No vendor lock in High Performance Modern architecture Standards Compliant Highly Modular Widely supported Internationalization support LtR language support http://oswco.com
- 3. Django Is a Python Framework Not just a Web framework What is Python? http://oswco.com
- 4. Traditional Approach vs. Django Build Data Dictionary Build Data Base Interface Build Authoring Tools Build Logic Paint Templates Build Data Flow Done Done Done Done Done Done Traditional Model               Django http://oswco.com
- 5. Python An Interpreted Language with extensive corporate usage and sponsorship Inherently Multiplatform Linux, Windows, Mac (some others) Inherently Multi Language (multi character support also) Many "packages" covering a wide variety of domains Math : scipy Image Recognition Corporate sponsorship: Google Microsoft (Iron Python) Sun (Jython) http://oswco.com
- 6. Django Lots of users: Google NASA PBS Bit-Bucket Newspapers http://oswco.com
- 7. Django as a framework  An MVC type framework (Called MVT in Django) M= Model, The database interface V= View, Logic for getting stuff in and out of the database T= Template, The display logic Closest competitor is Ruby on Rails Microsoft playing catch up in MVC frameworks still almost Beta Java examples are Grails, Spring, Struts or Java Server Faces PHP has dozens Symfony, CodeIgniter  For the Web MVT (or MVC) is as important a concept as "Structured Programming" and dates back to 1979.  Enables easier maintenance and independent development of functional modules with different skill sets http://oswco.com
- 8. Django layers (MVT) Model ..View...Template Model Database interface an abstraction Supports: Mysql MSsql Oracle Postgre Sql IBM Db2 Sql lite In general: change the DataBase and don't touch your code Define model, Admin gets generated automatically So does the database Most data editing http://oswco.com
- 9. Django View Most Business logic edits, calculations permissions many libraries available Context processors: More advanced business logic http://oswco.com
- 10. Template Simple template language Css is separate designed for non technical users such as designers Easily able to use other Template models (Jinga) Can be used with most advanced front end tools: Ajax Jquery Pyjamas (an upcoming Python Web Presentation tool) Flash Adobe Air http://oswco.com
- 11. Other Django features Unique in being built on standard language and able to take advantage of libraries developed for other purposes, Imaging, graphics, scientific calculations and many more. Extensive configuration file Different Databases Different sites Different operating systems Different Caching frameworks Structure allows site optimization across specialized servers Static media Media And now also Pinax which is a collection of pre-configured applications written in Django http://oswco.com
- 12. Other Django features continued Loosely coupled Alternative Model layer, Sql Alchemy Alternative Template layer, Jinga, Jinga2 Many users constantly adding modules and features http://oswco.com
- 13. Pinax Pre-assembled Django Applications Permissions Blog Social site Project site Sales site http://oswco.com
- 14. Tools Python Python Debug tools Django debug toolbar Eclipse Pydev Pylint Pytest Doc test Unit test Embedded documentation via Sphinx Change control done with Distributed change control tool GIT (used by the Linux development team) http://oswco.com
Editor's Notes
- #2: If I don't know what Python or Pinax is, why should I care? Â First slide needs to grab attention. Â Make a statement: Â "here's what Django can do for you!"
- #4: What is a Modern Framework? HOw does that help me? Â Here's where a diagrem might help.
- #5: something like this. Â I am sure this isn't accurate but a comparison would be great. Â Perhaps followed by a software diagram for both. Â How about a workflow showing the steps to building an application old school versus Django?Â
- #6: Good, its important to name drop to establish credibilty and continuity.Â
- #8: Does this mean the underpinings are already done? Â How does this improve my need to deploy and maintain a teller application? Â How does this lower the cost of your company's product? I like this, I think most CIO's would know what a MVC is. How about a contrast of MVC vs MVT?
- #9: Again, I think a workflow diagram showing how a developer goes about developing with C++. Visual Basic, verus Python Django would be helpful. Â Also, a diagram showing the interdependence on Python, Django and Pinax.Â
- #13: I think we need some kind of schematic of the hardware layout: Â where does the logic reside (local server, central servier, workstation). Â Is it browser based? Â Smart clent? Â Disaster recovery? Version control? Can I run two different versions at the same time (conversions)?
- #14: Good, is this where object orientation or SOA resides? Â So, PInax are pre-assembled objects, DJango is the framework and Python is what? Can that be shown graphically, in some kind of picture?
- #15: Again, this needs to be tied back to a CIO's needs: Â version control, central administration, security, agility, scalability, reliability. etc. Â