The practice of the beego framework of goweb development: Section II project initialization configuration

One 、Beego Project organization structure

The content of the last lesson is right beego A simple analysis of the case code of , To sum up beego Organizational structure of the project , Summarized below ：

• conf： The directory where the project configuration file is located , Some global configurations in the project can be placed in this directory . default app.conf Three configurations are specified by default in the file ：
  • 1）appname = BeegoDemo2：  Specify project name .
  • 2）httpport = 8080：  Specify the project service listening port .
  • 3）runmode = dev：  Specify the execution mode .
• controllers： This directory is the directory where the controller files are stored , The so-called controller is to control which business logic the application calls , from controllers processed http After the request , And be responsible for returning to the front-end caller .
• models：models Layer can be interpreted as entity layer or data layer , stay models The layer realizes the processing of user and business data , Some operations related to database tables will be implemented in this directory , Then return the executed result data to controller layer . For example, insert new data into the database , Delete database table data , Modify a piece of data , Querying business data from the database is in models Layer implementation .
• routers： This layer is the routing layer . Routing means distribution , The current browser performs a http The request reaches the background web Project time , It must be able to make the program according to the request of the browser url Different business processes , From receiving the front-end request to judging the process of executing specific business logic , Just from routers To achieve .
• static： stay static Under the table of contents , Deposit is web Static resource file of the project , There are mainly ：css file ,img,js,html These kinds of documents .html The static page file of the application will be stored in .
• views：views What is stored in is stored in the application html Directory of template page . The so-called template , That is, the page frame and layout have been used html It's written , Just visit and show , Dynamically fill the obtained data into the page , It can improve rendering efficiency . therefore , Template file is a very common way .

Sum up , The whole project architecture is MVC The mode of operation of . You should be familiar with common architectural patterns, such as ：MVC,MVP,MVVM And so on . Here we use MVC, It's clear and easy to understand .

Two 、 Routing settings

stay beego In the frame , Four routing settings are supported , They are ： Basic routing , Fixed route , Regular routing and Automatic routing .

• 1、 Basic routing ：
  Directly through beego.Get,beego.POST,beego.Head,beego.Delete And other methods to map routes , Let's show you through code . We know , common http Request method operations include ：GET,HEAD,PUT,POST,DELETE,OPTIONS etc. . 1. The first is basic GET route . Let's show you an example .beego.GET("",func) 2. The basis of POSt route ：beego.POST("",func) 3. besides , And support Patch,Head,Delete Equal basic routing .

The above request and the corresponding way to find the request method type is RESTful form , What we use most is RESTful form RESTful It is currently developed API A form very commonly used in , In fact, that is RESTful The form is that the user is get Automatically execute when requested Get Method ,Post The request is executed Post Method .

• 2、 Fixed route ：  Code forms such as the following ：
  beego.Router("/",controller);
  Get The request will correspond to Get Method ,Post Will correspond to Post Method ,Delete Will correspond to Delete Method ,Header The method will correspond to Header Method .
• 3、 Regular routing ：  Regular routing refers to the ability to perform fixed routing , Support regular expressions that match a certain format . such as :id,:username, Custom regular ,file Path and suffix switching and full matching .
• 4、 Custom routing   The above two routes are default, depending on the type of request ,Get Is executed Get Method ,Post perform Post Method , More limited . Because most of them use fixed matching when developing, they want to directly execute the corresponding logic control methods , therefore beego It provides us with customized routing configuration that can be customized . The way is as follows ：

beego.Router("/",&IndexController{},"")

It can be used HTTP Method：

• "*"： Contains all of the following functions
• "get"：GET request
• "post"：POST request
• "put"：PUT request
• "delete"：DELETE request
• "patch"：PATCH request
• "options"：OPTIONS request
• "head"：HEAD request

The above corresponding request methods , stay beego.Controller in , A lot of methods are defined , such as Init,Prepare,Post,Get,Head,Delete Other methods . The above analysis is beego Framework of the Router as well as Controller Running logic .

3、 ... and 、model Layer analysis

stay Web Development process , Developers manipulate data , The most common way to store data is database operation , Database operation is an independent module , This will be implemented in the following specific projects .

Four 、view To write

The actual combat projects here are static html Template files and other static resources , It has been written and provided to developers, which can be directly used in the project . In the actual development process , We need to master html,js Grammar and simple css Grammar should be able to understand , Be able to use time simply . More complex front-end pages or static pages , Need to dock with front-end developers . The development focus is on the background server , therefore , Just learn to use and call debugging .

5、 ... and 、 Static file settings

stay goweb In the project , As mentioned above, there are some static resource files , If the user wants to access the static resource file , We should also be able to visit , This requires static resource settings in our project . Set as ：

beego.SetStaticPath("/down1","download1")

there download Directory refers to non goweb Project static Under the directory , It's a new directory created by the developer .

6、 ... and 、 Introduction to actual combat projects

In this series of courses , We use it together Beego Framework development to achieve a blog system . As shown in the figure below ：