What method does thinkphp use to call the view?

ThinkPHP is an open source PHP development framework. It adopts object-oriented programming ideas and is a lightweight, efficient and fast PHP development framework. In the development of ThinkPHP, views are a very important part, used to display data and render page effects. So, how to call the view in ThinkPHP? This article will introduce in detail how to call views in ThinkPHP.

1. What is a view

In the MVC architecture, the view layer is mainly responsible for presenting data and displaying page effects. It is the "appearance" part of the entire application and the part that users most directly feel. . Views typically include HTML markup and code snippets that display data. In ThinkPHP, views are stored in the view directory of the project and consist of view files and layout files. When the page is displayed, the corresponding layout file of the view file is automatically loaded.

2. Method of calling the view

1. Call the view in the controller

In ThinkPHP, the controller is the center for scheduling and processing user requests. The controller can Load the model to obtain data, and then pass the data to the view for display. Calling the view method is very simple, you can use the $this->fetch() method in the controller.

The following is a sample code:

public function index()
{
    //从数据库中获取数据
    $data = Db::name('article')->find();
    //将数据传递给视图
    $this->assign('data', $data);
    //调用视图并进行展示
    return $this->fetch();
}

It can be seen that the $this->fetch() method will automatically find the view file corresponding to the controller and load the corresponding layout file and template document.

2. Call other views in the view

In ThinkPHP, views can call each other. We can introduce a view file into another view file. This method is usually used for page layout design. The common parts are placed in a view file and can be referenced by other view files.

Here is the sample code:

index.html：

<!-- 引入头部 -->
{include file="header.html"}

<!-- 显示数据 -->
{foreach $list as $vo}
    <li>{$vo.title}</li>
    <li>{$vo.content}</li>
    <li>{$vo.time}</li>
{/foreach}

<!-- 引入尾部 -->
{include file="footer.html"}

header.html：

<div class="header">
    <h1 id="网站标题">网站标题</h1>
    <nav>
        <a href="/">首页</a>
        <a href="/about">关于我们</a>
        <a href="/contact">联系我们</a>
    </nav>
</div>

footer.html：

<div class="footer">
    版权所有©2019-2021
</div>

It can be seen that other view files can be introduced using the {include} statement. In this way, page layout and code can be reused, and development efficiency can be improved.

3. Conclusion

This article introduces the methods of calling views in ThinkPHP. Mastering these methods can develop websites more efficiently. In actual development, views should be designed and called according to different needs and business logic. At the same time, mastering the use of views will also help to beautify the page and improve the user experience.

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