thinkphp infinite classification method

With the continuous development of the Internet industry, the use of back-end management systems in website development has become a necessity. However, in the process of website management, as data continues to accumulate, there are more and more categories, so when displaying on the page, it needs to be summarized and organized according to categories. In this case, it is necessary to use the classification management method. This article will introduce how to use the Infinitus classification method of the thinkphp framework to achieve website classification management.

1. What is thinkphp framework?

thinkphp is an excellent framework technology that inherits the advantages of traditional website development frameworks and integrates current mainstream technical methods. The thinkphp framework is not only efficient and convenient, but also has excellent scalability and compatibility. When using the thinkphp framework, we can avoid routine code duplication and improve code running efficiency.

2. What is Infinitus classification?

Infinitus classification refers to the infinite expansion of the classification tree structure, with no limit on the number of layers or quantity. Compared with traditional fixed classification methods, Infinitus classification presents greater flexibility and convenience in data collection. Using Infinitus categories on the website makes it easier to add, modify and delete as needed.

3. How does the thinkphp framework implement infinite classification?

The thinkphp framework implements infinite classification by using recursion. Recursion is a method that repeatedly calls itself based on the current situation. In Infinitus classification, each classification node has its own id and parent node pid. By continuously recursing the pid, we can easily obtain the required classification information.

4. Code implementation

(1) Create a database and create a classification table

Suppose there is a blog website and articles need to be classified and managed according to tags. First, we need to create a classification table that contains the following fields: id, name, pid. Among them, id is the unique identifier of the category, name is the name of the category, and pid is the id of the parent node of the category.

(2) Add category display method in Controller

public function category() {

//Get category data

$categories = $this ->getCategories();

$this->assign('categories', $categories);

return $this->fetch();

}

(3) Add the get category method in Model

public function getCategories($pid=0) {

$result = $this->where(' pid', $pid)->select();

$categories = array();

foreach ($result as $category) {

$category['sub'] = $this->getCategories($category->id);

$categories[] = $category;

}

return $categories;

}

(4) Display category data in View

{volist name ="categories" id="category"}

• {$category.name}

  {if $category.sub}
  
  <ul>
  
    {volist name="category.sub" id="sub"}
  
    <li>{$sub.name}</li>
  
    {/volist}
  
  </ul>
  
  {/if}
  

{/volist}

Through the above steps, we can implement the infinite classification method of the thinkphp framework, and through recursive query of pid, the classification information can be displayed on the page in a tree structure. show.

5. Summary

By reading this article, we can not only master the infinite classification method of the thinkphp framework, but also understand the application of recursion in classification management. Nowadays, category management has become one of the necessary functions of the backend management system. Therefore, learning the infinite classification method of the thinkphp framework can improve our development efficiency and make our website more standardized and easier to use.

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