Scaffold (programming)

Code Generation Method or Project Generation Method

Scaffolding used in calculations refers to one of two methods: the first is the code generation method associated with database access in some model-view-controller frameworks; the second is a project generation method supported by various tools.

Code generation

Templating is a technique supported by some model-view-controller frameworks, in which the programmer can specify how the application's database can be used. Compiler platforms uses this specification along with predefined code templates to generate final code that an application can use to create, read, update, and delete database entries, effectively treating the templates as a " framework " on which a more powerful application can be built.

Scaffolding is an evolution of database code generators from earlier development environments such as Oracle CASE Generator and many other 4GL client-server software development products.

Scaffolding has become popular with the Ruby on Rails framework. It has been adapted to other software frameworks including OutSystems Platform, Express Framework, Play framework, Django, web2py, MonoRail, Brail, Symfony, Laravel, CodeIgniter, Yii, CakePHP, Phalcon PHP, Model-Glue, PRADO, Grails, Catalyst, Mojolicious, Seam Framework, Spring Roo, JHipster, ASP.NET Dynamic Data, KumbiaPHP, and ASP.NET MVC framework metadata template helpers 

Scaffolding can occur at two different stages in the program life cycle: design time and run time. Design-time templating creates code files that can later be modified by the programmer to customize how the application's database is used. However, for large-scale applications, this approach can be difficult to maintain due to the sheer number of files created and the fact that the design of the files was largely fixed when they were created or copied. from the original templates. Alternatively, runtime scaffolding creates code on the fly. This allows you to immediately reflect changes in the design of the templates throughout the application. But redesigning templates can be more difficult or impractical in the case of scaffolding at runtime.

Scaffolding in Ruby on Rails

When a string scaffold: model_name is added to a controller, Rails will automatically generate all the relevant given interfaces at runtime. Since the API is created on the fly, the programmer cannot easily change the interfaces created in this way. Such a simple framework is often used for prototyping applications and entering test data into a database.

The programmer can also run an external command to pre-generate the Ruby code for the framework: rails генерируют каркас model_name The script generate will create Ruby code files that the application can use to interact with the database. This is somewhat less convenient than dynamic scaffolding but gives the programmer the flexibility to change and customize the generated APIs.

Note. As of Rails 2.0, dynamic scaffoldings are no longer stored.