What is the most basic usage of the `split` filter in AnQiCMS templates?

In AnQiCMS template design, flexibly handling page data is the key to building a dynamic website.Whether it is article tags, product attributes, or other custom information, they often exist in the form of strings and need to be further split and processed.splitThe filter has become a very practical tool, which can help us effectively split strings into arrays, providing great convenience for subsequent data display and logical judgment.

So,splitWhat is the most basic string splitting usage of the filter?

splitWhat is the core function of the filter?Split a string into an array based on the specified delimiter。Its basic syntax is very intuitive, usually used like this:

{{ 你的字符串变量|split:"分隔符" }}

Let's understand through a specific example. Suppose we have a keyword field in an article, and its value is“SEO优化,网站建设,内容营销,Go语言”These keywords are separated by English commas and spaces. If we want to display these keywords individually instead of as a whole string, we can usesplitFilter.

{% set keywordsString = "SEO优化, 网站建设, 内容营销, Go语言" %}
{% set keywordsArray = keywordsString|split:", " %}

Here,keywordsStringThis is the original string we are processing.splitbehind the filter.", "That is the delimiter we specified. After this operation,keywordsArrayit is no longer a simple string, but a string that contains"SEO优化"/"网站建设"/"内容营销"/"Go语言"These four elements form an array.

After understanding the basic usage, you still need to pay attention to several details:

• Choice of delimiterThe delimiter can be any string, as long as it exists in the original string,splitIt will cut according to it. If the original string does not contain the separator you specified,splitThe filter will return a single-element array containing the original string itself. For example,"Hello World"|split:"-"You will get["Hello World"].
• The behavior of empty separator: If you set the separator to an empty string (i.e."")splitThe filter will be very smart to split each UTF-8 character of the original string into an element of the array. For example,"你好"|split:""You will get["你", "好"].
• The result is an array:splitThe result of the filter is an array (corresponding to the Go language底层 in AnQiCMS),[]string{}This means you can treat it like any other array, for example,forLoop through each element in the array, or access a specific element by index.

Combine with the split array toforused together, issplitOne of the most common practical applications of filters. For example, to display each keyword cut out above:

{% set keywordsString = "SEO优化, 网站建设, 内容营销, Go语言" %}
{% set keywordsArray = keywordsString|split:", " %}

<p>文章关键词：</p>
<ul>
    {% for keyword in keywordsArray %}
        <li>{{ keyword }}</li>
    {% endfor %}
</ul>

This code will display each keyword in a list on the page, which is very useful for beautifying layout, adding keyword links, or performing other dynamic processing.

Through such basic applications,splitThe filter greatly enhances the ability of AnQiCMS templates to process strings, making data display more flexible and accurate.

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Common Questions (FAQ)

1.splitWhat is the type of data the filter splits into? How can I use it? splitAfter the filter splits the string, it returns an array type of data (corresponding to in Go language)[]string{}）。You can use the AnQiCMS template providedforto iterate over this array, and handle or display each element individually.

2. If I need to split a string into an array by individual characters instead of a specific delimiter, which filter should I use?If you want to split each character of a string into an element of an array, for example, split '安企CMS'["安", "企", "C", "M", "S"], you can usemake_listFilter.make_listThe filter splits the string at the UTF-8 character level, whilesplitThe filter splits the string based on the delimiter you provide.

3.splitWhether the filter can be combined withjoinHow do you use filters together? What is the relationship between them?Yes,splitfilters andjoinThe filter is complementary.splitSplit a string into an array by delimiter,joinand concatenate the elements of an array into a string with a specified delimiter. You can first usesplitSplit a string, process it, and then use itjoinRecombine an array into a new string, which is very useful in some complex data formatting scenarios.