Home Backend Development PHP Tutorial ThinkPHP CURD方法之data方法详解_PHP

ThinkPHP CURD方法之data方法详解_PHP

Jun 01, 2016 am 11:50 AM
thinkphp

ThinkPHP

ThinkPHP CURD方法的data方法也是模型类的连贯操作方法之一,用于设置当前要操作的数据对象的值,很多开发人员却并不太习惯用这个方法,今天来讲解下如何用好data方法。

具体用法如下:

1.写操作

通常情况下我们都是通过create方法或者赋值的方式生成数据对象,然后写入数据库,例如:

$Model = D('User');
$Model->create();
 // 这里略过具体的自动生成和验证判断
$Model->add();

Copy after login

又或者直接对数据对象赋值,例如:

$Model = M('User');
$Model->name = '流年';
$Model->email = 'thinkphp@qq.com';
$Model->add();

Copy after login

那么data方法则是直接生成要操作的数据对象,例如:

$Model = M('User');
$data['name'] = '流年';
$data['email'] = 'thinkphp@qq.com';
$Model->data($data)->add();

Copy after login

注意:如果我们同时使用create方法和data创建数据对象的话,则后调用的方法有效。

data方法支持数组、对象和字符串,对象方式如下:

$Model = M('User');
$obj = new stdClass;
$obj->name = '流年';
$obj->email = 'thinkphp@qq.com';
$Model->data($obj)->add();

Copy after login

字符串方式用法如下:

$Model = M('User');
$data = 'name=流年&email=thinkphp@qq.com';
$Model->data($data)->add();

Copy after login

也可以直接在add方法中传入数据对象来新增数据,例如:

$Model = M('User');
$data['name'] = '流年';
$data['email'] = 'thinkphp@qq.com';
$Model->add($data);

Copy after login

但是这种方式data参数只能使用数组。

当然data方法也可以用于更新数据,例如:

$Model = M('User');
$data['id'] = 8;
$data['name'] = '流年';
$data['email'] = 'thinkphp@qq.com';
$Model->data($data)->save();

Copy after login

当然我们也可以直接这样用:

$Model = M('User');
$data['id'] = 8;
$data['name'] = '流年';
$data['email'] = 'thinkphp@qq.com';
$Model->save($data);

Copy after login

同样,此时data参数只能传入数组。

在调用save方法更新数据的时候 会自动判断当前的数据对象里面是否有主键值存在,如果有的话会自动作为更新条件。也就是说,下面的用法和上面等效:

$Model = M('User');
$data['name'] = '流年';
$data['email'] = 'thinkphp@qq.com';
$Model->data($data)->where('id=8')->save();

Copy after login

2.读操作

除了写操作外,data方法还可以用于读取当前的数据对象,例如:

$User = M('User');
$map['name'] = '流年';
$User->where($map)->find();
 // 读取当前数据对象
$data = $User->data();
Copy after login

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

How to run thinkphp project How to run thinkphp project Apr 09, 2024 pm 05:33 PM

To run the ThinkPHP project, you need to: install Composer; use Composer to create the project; enter the project directory and execute php bin/console serve; visit http://localhost:8000 to view the welcome page.

There are several versions of thinkphp There are several versions of thinkphp Apr 09, 2024 pm 06:09 PM

ThinkPHP has multiple versions designed for different PHP versions. Major versions include 3.2, 5.0, 5.1, and 6.0, while minor versions are used to fix bugs and provide new features. The latest stable version is ThinkPHP 6.0.16. When choosing a version, consider the PHP version, feature requirements, and community support. It is recommended to use the latest stable version for best performance and support.

How to run thinkphp How to run thinkphp Apr 09, 2024 pm 05:39 PM

Steps to run ThinkPHP Framework locally: Download and unzip ThinkPHP Framework to a local directory. Create a virtual host (optional) pointing to the ThinkPHP root directory. Configure database connection parameters. Start the web server. Initialize the ThinkPHP application. Access the ThinkPHP application URL and run it.

Which one is better, laravel or thinkphp? Which one is better, laravel or thinkphp? Apr 09, 2024 pm 03:18 PM

Performance comparison of Laravel and ThinkPHP frameworks: ThinkPHP generally performs better than Laravel, focusing on optimization and caching. Laravel performs well, but for complex applications, ThinkPHP may be a better fit.

Development suggestions: How to use the ThinkPHP framework to implement asynchronous tasks Development suggestions: How to use the ThinkPHP framework to implement asynchronous tasks Nov 22, 2023 pm 12:01 PM

"Development Suggestions: How to Use the ThinkPHP Framework to Implement Asynchronous Tasks" With the rapid development of Internet technology, Web applications have increasingly higher requirements for handling a large number of concurrent requests and complex business logic. In order to improve system performance and user experience, developers often consider using asynchronous tasks to perform some time-consuming operations, such as sending emails, processing file uploads, generating reports, etc. In the field of PHP, the ThinkPHP framework, as a popular development framework, provides some convenient ways to implement asynchronous tasks.

How to install thinkphp How to install thinkphp Apr 09, 2024 pm 05:42 PM

ThinkPHP installation steps: Prepare PHP, Composer, and MySQL environments. Create projects using Composer. Install the ThinkPHP framework and dependencies. Configure database connection. Generate application code. Launch the application and visit http://localhost:8000.

How is the performance of thinkphp? How is the performance of thinkphp? Apr 09, 2024 pm 05:24 PM

ThinkPHP is a high-performance PHP framework with advantages such as caching mechanism, code optimization, parallel processing and database optimization. Official performance tests show that it can handle more than 10,000 requests per second and is widely used in large-scale websites and enterprise systems such as JD.com and Ctrip in actual applications.

Development suggestions: How to use the ThinkPHP framework for API development Development suggestions: How to use the ThinkPHP framework for API development Nov 22, 2023 pm 05:18 PM

Development suggestions: How to use the ThinkPHP framework for API development. With the continuous development of the Internet, the importance of API (Application Programming Interface) has become increasingly prominent. API is a bridge for communication between different applications. It can realize data sharing, function calling and other operations, and provides developers with a relatively simple and fast development method. As an excellent PHP development framework, the ThinkPHP framework is efficient, scalable and easy to use.

See all articles