In the daily content operation of Anqi CMS, we often encounter the need to handle data separated by specific symbols (such as commas).This data may come from custom fields, imported CSV files, or information specifically organized into a line to keep the content concise.splitFilter.

splitThe filter can help us easily split a string into an iterable array (usually referred to as a slice or list in programming) according to a specified delimiter. This means that data that was originally piled togethersplitAfter processing, it can be displayed as individual entries in a loop on the web page, greatly enhancing the flexibility and display effect of the content.

splitBasic usage of the filter

splitThe filter is very intuitive to use. Its basic syntax is{{ 字符串变量|split:"分隔符" }}In which, "string variable" is the original string you want to split, and "delimiter" is the character or string you use to tell the system where to cut.

Imagine that you have recorded a series of keywords in a custom field of an article, such as 'Anqi CMS, content management, website optimization, template development'. You want to display these keywords individually as small tags. First, we need to get this string: 

{% set keyword_string = "安企CMS,内容管理,网站优化,模板开发" %}

Then, we can usesplitthe filter to split it into an array:

{% set keyword_array = keyword_string|split:"," %}

At this time,keyword_arrayIt is already an array containing the elements 'AnQi CMS', 'Content Management', 'Website Optimization', and 'Template Development'. To display them on the page, we usually combineforTranslate this array by using a loop tag:

<div class="tags-container">
    {% for tag in keyword_array %}
        <span class="tag-item">{{ tag }}</span>
    {% endfor %}
</div>

By such a combination, the original line of text becomes multiple independent tags, each of which can be rendered separately, making the page content more dynamic and friendly.

Some useful tips in practical applications

In actual operation, you may encounter some detail issues, here are some tips to help you make better use of itsplitFilter:

  1. Handling spaces before and after delimiters:Many times, a comma-separated string will have a space after the comma, for example"苹果, 香蕉, 橘子". If used directly|split:",", the split elements will contain extra spaces (such as" 香蕉"This is when we can usesplitit aftertrima filter to remove whitespace from each element.

    {% set fruits_string = "苹果, 香蕉, 橘子" %}
{% set fruit_list = fruits_string|split:"," %}
<ul>
    {% for fruit in fruit_list %}
        <li>{{ fruit|trim }}</li> {# 使用 trim 过滤器去除空格 #}
    {% endfor %}
</ul>

    trimThe filter removes all leading and trailing whitespace, tabs, and newlines, ensuring each element is clean.

  2. A string that does not contain delimiters:If your string does not contain the specified delimiter,splitHow will the filter handle it?It is very simple, it will return an array that contains only the original string itself, with a length of 1.This is very useful when dealing with data that may or may not have delimiters, without the need for additional logical judgment.

    {% set single_item_string = "唯一的项" %}
{% set item_array = single_item_string|split:"," %}
{% comment %} item_array 现在是 ["唯一的项"] {% endcomment %}
{% if item_array|length > 0 %}
    <p>{{ item_array[0] }}</p>
{% endif %}

  3. Empty delimiter:When you use an empty string as a delimiter (|split:"")splitThe filter will split the string into an array by each UTF-8 character.This means that it will treat each Chinese character, letter, or symbol as an independent element.make_listFilter, the usage is more concise, and the effect is the same:{{ "你好世界"|make_list }}.

  4. joinThe reverse operation of the filter:It is worth mentioning that,splitA 'partner' for the filter isjoinFilter.joinThe filter does exactly the opposite, it can concatenate an array into a string with a specified delimiter.If you need to perform format conversion between content display and data storage, these two filters will be your good assistants.

By using flexibilitysplitFilter, we can convert comma-separated data in the Anqi CMS into structured arrays, thus achieving richer and more dynamic content display. Whether it's product parameters, article tags, or any other list form of data,splitCan make your template logic clearer, and the page presentation more attractive.

Common Questions and Answers (FAQ)

Q1: If my string does not contain a delimiter,splithow will the filter handle it?A1: If the string does not contain the specified delimiter,splitThe filter will return an array containing the original string itself, with a length of 1. For example,"AnQiCMS"|split:","The result is["AnQiCMS"].

Q2: Why do the elements I split out have extra spaces?A2: This is usually because the original string has spaces after the delimiter (such as a comma), like"选项一, 选项二"The solution is tosplitapply a filter to each element againtrimFilter, for example{{ item|trim }}to remove extra whitespace characters.

Q3: Can I use thesplitresult of the filter directly in a conditional judgment?A3: Of course.splitThe filter returns an array, you can usefora loop to iterate over it, or you can useifSentence combinationlengththe filter to check if the array is empty or the number of elements it contains, for example{% if my_array|length > 0 %}.