Django Design Patterns and Best Practices by Arun Ravindran

By Arun Ravindran

Easily construct maintainable web pages with robust and correct Django layout patterns

About This Book

• get to the bottom of the typical difficulties of net improvement in Django
• examine the present top practices whereas operating in Django 1.7 and Python 3.4
• event the demanding situations of engaged on an end-to-end social community project

Who This booklet Is For

If you must learn the way top to make use of typically came across styles and research top practices in constructing purposes with Django, this is often the e-book for you. This ebook, like Django itself, is obtainable to beginner builders alike and assumes little within the means of previous experience.

Although written for Python three, nearly all of the code during this booklet works in Python 2 or might be simply translated.

What you are going to Learn

• comprehend universal layout styles that could assist you write higher Django code
• notice the most recent top practices and idioms during this quickly evolving framework
• Deep dive into a number of elements of Django from versions and perspectives to checking out and deployment
• become familiar with tough themes corresponding to facing legacy code and debugging
• get yourself up to speed with a number of the nuances of net improvement similar to browser assaults and databases
• decrease the upkeep burden with well-tested, purifier code
• express your paintings to the realm by means of studying approximately web hosting, deploying, and securing your Django projects

In Detail

Learning how you can write larger Django code to construct extra maintainable web content both takes loads of event or familiarity with a variety of layout styles. packed with a number of idiomatic Django styles, Django layout styles and most sensible Practices hurries up your trip into the realm of net development.

Discover a collection of universal layout difficulties, each one tackling features of Django together with version layout and perspectives, and study a number of prompt suggestions with necessary code examples and illustrations. You'll additionally become familiar with the present most sensible practices within the most recent types of Django and Python. making a profitable net program contains even more than Django, so complex themes together with leisure, checking out, debugging, safety, and deployment also are explored intimately.

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Names are important, as they help in building the pattern vocabulary. All patterns will have the following parts: Problem: This briefly mentions the problem. Solution: This summarizes the proposed solution(s). Problem Details: This elaborates the context of the problem and possibly gives an example. Solution Details: This explains the solution(s) in general terms and provides a sample Django implementation. Criticism of Patterns Despite their near universal usage, Patterns have their share of criticism too.

Fowler's patterns are organized as follows: • Domain Logic Patterns: These include Domain Model, Transaction Script, Service Layer , and Table Module • Data Source Architectural Patterns: These include Row Data Gateway, Table Data Gateway, Data Mapper, and Active Record • Object-Relational Behavioral Patterns: These include Identity Map, Unit of Work, and Lazy Load • Object-Relational Structural Patterns: These include Foreign Key Mapping, Mapping, Dependent Mapping, Association Table Mapping, Identity Field, Serialized LOB, Embedded Value, Inheritance Mappers, Single Table Inheritance, Concrete Table Inheritance, and Class Table Inheritance • Object-Relational Metadata Mapping Patterns: These include Query Object, Metadata Mapping, and Repository • Web Presentation Patterns: These include Page Controller, Front Controller, Model View Controller, Transform View, Template View, Application Controller, and Two-Step View • Distribution Patterns: These include Data Transfer Object and Remote Facade • Offline Concurrency Patterns: These include Coarse Grained Lock, Implicit Lock, Optimistic Offline Lock, and Pessimistic Offline Lock [9] Django and Patterns • Session State Patterns: These include Database Session State, Client Session State, and Server Session State • Base Patterns: These include Mapper, Gateway, Layer Supertype, Registry, Value Object, Separated Interface, Money, Plugin, Special Case, Service Stub, and Record Set Almost all of these patterns would be useful to know while architecting a Django application.

Dressed in a beige blazer and light blue jeans, Hart arrived well in time. Despite being taller than most people and having a cleanshaven head, he seemed cool and approachable. He asked if Steve had checked out the previous attempt to build a superhero database in the sixties. " said Steve. "I did. The database seemed to be designed as an Entity-Attribute-Value model, something that I consider an anti-pattern. " Hart almost winced at the last statement. In a slightly lowered voice, he said, "You are right, I didn't.

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