Introduction to MVC framework

MVC frame

         MVC(model,view,controller), A business logic 、 data 、 The method of interface separation is the framework of organizing code . While improving the interface and user interaction , There is no need to rewrite the business logic .MVC Traditional input 、 Processing and output are separated .

         Model： Model , Logical part , It is also the core of the presentation application , For example, database tables and records

         View： View , data display , It also represents the interface , Is for display , For example, display the records of the database

         Controller： controller , User interaction , It also means processing , For example, deal with / Add, delete, check and modify the records in the database

      Execute the process ： The browser sends a request to the controller , The controller receives the request and delegates the request to the business object for processing , Then use view rendering to return the results to the browser .