What are the practical scenarios for using the `if/else` logic judgment tags of the AnQi CMS in controlling content display conditions?

In the template design of AnQi CMS,if/elseLogical judgment tags are an extremely powerful tool that endows the content of the website with dynamic display vitality.By flexibly using this tag, we can intelligently control the display and hiding of elements on the page based on different conditions, thus providing users with a more accurate and personalized browsing experience, while also greatly improving the operational efficiency of the website.

Imagine if your website needs to display different content for different scenarios, or if certain information is only visible under specific conditions.if/elseTags come in handy.It allows you to perform conditional judgments directly in the front-end template, avoiding the cumbersome modification of back-end logic, making content operation and template maintenance more intuitive.

Next, let's take a look together.if/elseThe logic judgment tag in controlling the display conditions of content has what very practical scenarios.

Dynamic content display: Let information be delivered accurately.

Many times, the content on a website needs to be presented according to its own attributes.if/elseTags can help us achieve this, making the display of content more intelligent.

{% if item.Thumb %}
    <img src="{{item.Thumb}}" alt="{{item.Title}}">
{% else %}
    <img src="/static/images/default-thumb.png" alt="默认图片">
{% endif %}

This code means, if the current content has a thumbnail, it should be displayed; if not, a preset default image should be displayed.This not only ensures the beauty of the page, but also enhances the completeness of the content.

For example, Anqi CMS supports setting 'recommended attributes' for content, such as 'headline', 'recommended', 'slideshow', etc.We may wish to display different articles in different areas of the homepage based on these properties.if/elseTo determine whether a content has a specific attribute to decide its position or style on the page:

{% if archive.Flag contains 'h' %}
    <span class="badge headline">头条</span>
{% elif archive.Flag contains 'c' %}
    <span class="badge recommended">推荐</span>
{% endif %}

This way, articles with the 'Top Story' attribute can be specially marked to attract more attention.

For content that needs to distinguish between members and regular users, the user group management and VIP system built into Anqi CMS provide the basics.You can control the visibility based on the user's level or the reading permissions of the content.

{% if archive.ReadLevel > 0 %}
    <p>此内容为VIP专属，请升级会员查看完整内容。</p>
    {# 或者，如果用户是VIP，直接显示内容 #}
    {% if user.IsVip %}
        <div>{{archive.Content|safe}}</div>
    {% else %}
        <p>此内容为VIP专属，请 <a href="/vip-upgrade">升级会员</a> 查看完整内容。</p>
    {% endif %}
{% else %}
    <div>{{archive.Content|safe}}</div>
{% endif %}

This fine-grained control helps you achieve content monetization and the operation of a membership system.

Optimize page layout and navigation: enhance user-friendliness

A great website should not only have rich content, but also simple and efficient layout and navigation.if/elseTags are indispensable when building flexible page structures.

Highlighting the current page or category being accessed by the user in the website navigation is a common practice to enhance user experience. The navigation tags of Anqi CMS will provide aIsCurrentattributes, combined withif/elseYou can easily achieve this effect:

{% navList navs %}
    {% for item in navs %}
        <li class="{% if item.IsCurrent %}active{% endif %}">
            <a href="{{ item.Link }}">{{item.Title}}</a>
        </li>
    {% endfor %}
{% endnavList %}

This way, users can clearly know where they are on the website.

For websites with multi-level categories, drop-down menus or sub-navigation should only be displayed when there are subcategories, which can make the interface cleaner. By determining the category'sHasChildren【en】Attribute, you can intelligently control the display of sub-navigation:

{% categoryList categories with moduleId="1" parentId="0" %}
    {% for item in categories %}
        <li>
            <a href="{{ item.Link }}">{{item.Title}}</a>
            {% if item.HasChildren %}
                <ul class="sub-menu">
                    {# 这里可以再次循环显示子分类 #}
                </ul>
            {% endif %}
        </li>
    {% endfor %}
{% endcategoryList %}

In the article detail page, there are usually 'Previous Article' and 'Next Article' navigation links.If the current article is the first or last in the series, the corresponding navigation link should not appear.prevArchiveandnextArchiveTag combinationif/else【en】，it ensures that links are displayed only when there is a previous or next post:

{% prevArchive prev %}
    {% if prev %}
        <a href="{{prev.Link}}">上一篇：{{prev.Title}}</a>
    {% else %}
        <span>没有上一篇了</span>
    {% endif %}
{% endprevArchive %}

{% nextArchive next %}
    {% if next %}
        <a href="{{next.Link}}">下一篇：{{next.Title}}</a>
    {% else %}
        <span>没有下一篇了</span>
    {% endif %}
{% endnextArchive %}

【en】Enhance user experience and interaction: more considerate website service

if/elseLogical judgment plays a critical role in handling user-generated content (UGC), such as distinguishing the review and comment status for display.

The comment and message function of AnQi CMS supports a review mechanism.In the template, we can display different information to the user based on the status of the content.

”`twig {% commentList comments with archiveId=archive.Id type=“list” %}” }]

{% for item in comments %}
    <div>
        {% if item.Status != 1 %}