Create library website using Yii framework-YII-php.cn

With the advent of the digital era, libraries have gradually realized their own digital transformation, gradually shifting from traditional paper-based management to digital management. In the process of digital management, using website applications to manage libraries has become a very popular way, because it can help libraries better manage books, borrowing records, user accounts and other information. Using the Yii framework to create a library website has become a very simple and effective way.

This article will introduce how to use the Yii framework to create a library website.

Yii Framework Introduction

Yii framework is a high-performance PHP framework that uses the MVC (Model-View-Controller) pattern to implement Web application development. The framework provides a set of simple and efficient components and tools, as well as some built-in excellent features, such as Active Record, to help developers create high-performance web applications faster and is suitable for enterprise applications of all sizes. .

Features of Yii Framework:

High Performance: Yii Framework is designed as a high-performance PHP framework that improves web applications by using technologies such as dynamic loading. performance.
Efficient: The Yii framework provides many built-in tools and components, which can be used to optimize various application scenarios such as data access and model-view collaboration.
Simple: The syntax of the Yii framework is simple and easy to understand, and the code is very convenient to write, so it has become a web application framework suitable for PHP developers.
Create a library web application

2.1 Create a Yii project

First you need to create a Yii framework project and enter the following command on the command line:

 yiic.php webapp bookstore

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Where "bookstore" is the name of the Yii project we want to create. This command will create a complete Yii project for you.

2.2 Data table design

The library management system needs to design the following data tables:

Book table(book)

##book_idint(11)PRIMARY KEY AUTO INCREMENTbook_namevarchar(255)NOT NULLauthor#varchar(255)NOT NULLpublishervarchar(255) NOT NULLpublish_datedateNOT NULLisbnvarchar(20)NOT NULL

Field name	Field type	Constraints

##Reader table(reader)

Field name##reader_idint(11)PRIMARY KEY AUTO INCREMENTreader_namevarchar(255)NOT NULLphonevarchar(20)NOT NULLemailvarchar(255) NOT NULLvarchar(255)Borrowing record table (borrow)

Field type	Constraint conditions



		##address
DEFAULT NULL

Field nameField typeborrow_idint(11)int(11)int(11)datetimedatetime

Constraint conditions

PRIMARY KEY AUTO INCREMENT

book_id

ForeignKey(book)

reader_id

ForeignKey(reader)

borrow_date

NOT NULL

return_date

DEFAULT NULL

创建以上三个数据表。

2.3 数据库连接配置

在config.php文件中设置数据库连接的信息。

// 数据库配置
'db'=>array(
    'connectionString' => 'mysql:host=localhost;dbname=bookstore',
    'emulatePrepare' => true,
    'username' => 'root',
    'password' => '123456',
    'charset' => 'utf8',
    'tablePrefix' => '',
),

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这里配置的是mysql数据库，直接修改成您的数据库配置即可。

2.4 创建模型文件

通过使用Yii框架的命令行工具，我们可以快速地生成模型文件，基于现有的数据表来创建模型类。

 yiic sample-model book

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您可以用以上命令来生成一个book的模型类。这个类使用Yii的active record技术，获取数据表中的信息并对其进行操作。

2.5 创建控制器文件

控制器是连接模型和视图的桥梁，它负责处理来自视图的用户请求，并对模型进行处理和操作，最后将需要的结果呈现给用户。

通过以下命令，我们可以快速地生成一个简单的控制器：

 yiic sample-controller book

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以上命令会为您生成一个book的控制器类，并包含以下几个操作：

操作名	操作功能
Create	创建一本书
Read	读取一本书
Update	更新一本书
Delete	删除一本书
List	展示所有书籍

2.6 创建视图文件

视图文件是展示给用户的最终信息。通过使用Yii框架的命令行工具，我们可以快速地生成视图文件。

下面是一些在视图文件中使用的命令：

命令	用途
echo	输出变量
beginWidget	开始一个组件
endWidget	结束一个组件
CHtml	生成HTML标签
submitButton	创建一个提交按钮
label	创建一个标签

您可以利用以上命令创建视图文件，并将它们和控制器代码结合起来，通过模板渲染，实现对用户的直接呈现。

总结

使用Yii框架创建图书馆Web应用程序是一种很好的方法。然而，在使用Yii框架创建Web应用程序之前，您需要了解Yii框架的基本概念和使用方法，以及图书馆管理过程中需要用到的一些相关知识。希望这篇文章能够帮助您更好地理解Yii框架和图书馆管理系统的开发。

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