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从零开始学YII2框架(五)快速生成代码工具 Gii 的使用_PHP

May 31, 2016 pm 07:30 PM
gii yii2

Yii2 框架 之所以称之为高效快速开发的一款框架,是因为有一个神奇的工具Gii

用过Yii1框架的Coder都知道,Gii可以为你快速生成代码,也就是说搭建一个可以增删改查的WebApp可能一行代码都不用写。

当然作为Coder,不写代码怎么能实现我们想要的功能呢。

上次介绍了如何安装Yii框架,本次介绍一下如何使用gii工具快速实现CRUD功能。

框架安装完成后可以通过如下链接访问Gii工具

http://localhost/yii2test/backend/web/index.php?r=gii

Yii2的Gii工具使用了Bootstrap,对比Yii1看起来漂亮了许多。

yii2框架提供的生成工具有6个:Model,CRUD,Controller,Form,Module,Extension

我安装了一个yii2-kartikgii插件,此插件是用来生成Kartik模式的CRUD方法的。

本次就拿Kartik Crud配合默认生成工具来讲解。

模块的生成

如果你想实现应用模块化, 那么Module Generator能帮助到你。点击Module Generator生成模块

生成一个名为“user”的模块


点击Preview会看到Gii会帮助我们生成三个文件,可以点击链接预览代码。

点击Generate生成代码。

代码生成完毕,需要配置文件backend/config/main.php,把模块添加到应用里。


浏览器输入如下地址:

http://localhost/yii2test/backend/web/index.php?r=user

访问的是user模块


提示你

This is the view content for action "index". The action belongs to the controller "backend\modules\user\controllers\DefaultController" in the "user" module.

You may customize this page by editing the following file:

D:\WAMP\www\yii2test\backend\modules\user\views\default\index.php

这个界面内容访问的是模块user下的defaultController执行的是index这个action。

你可能需要自定义这个页面通过修改模块下的views文件index.php

模型的生成

模型的生成首先得配置数据库配置文件,路径:yii2test/common/config/main-local.php。


配置好数据库,我们使用Model Generator来生成对应的模型。


yii2会读取数据库中的表,如果数据库中没有user这个表。是无法读取数据库字段自动生成代码的。

这里注意填写namespace,带有路径的指定到模块user下的models。

建议勾选 Enable I18N,可以国际化WebApp。点击Generate生成代码。

CRUD方法生成

这里我使用的是插件yii2-kartikgii。关于yii2-kartikgii的安装和使用参照《Yii2 插件kartikgii》

下面来使用Kartik CRUD Generator来生成CRUD方法060414_0228_Yii2yii2kar1.png

需要注意的是Model Class、Search Model Class、Controller Class都需要配置路径指定到相应模块;Model ID是user。

点击Generator会生成8个可选的文件。主要是生成UserControler和View文件。

经过上面三步。我们不经意间就完成了MVC。那么我们看看自动生成的代码为我们展现出来的有什么信息。

浏览器输入地址

http://localhost/yii2test/backend/web/index.php?r=user/user

060414_0228_Yii2yii2kar2.png

此页面访问的是模块user下的user数据表模型CRUD方法。代码生成时候默认显示了表中的5个字段。使用的是Kartikgii插件。对比框架自带的CRUD方法生成的界面相对漂亮些。把表格放在bootstrap - panel标签下。并且添加了导出表格、重置表格等功能。

至此我们只是简单的配置了下config文件,没有编写一行代码。就实现了WebApp对数据表的操作功能。

Yii框架是不是很强大,很好用呢。至于我们对表怎么操作,完全可以自定义。后续就可以投入代码编写中了。

Yii框架帮助我们缩减了很多代码开发的工作量。可以称之为高效的PHP开发框架。

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