dedetypename是什么？标签用法揭秘

Of course! Let's break down dede_typename. This is a fundamental concept in the DedeCMS (织梦内容管理系统) templating system.

In short, dede_typename is a DedeCMS template tag used to display the name of a specific channel or content type.

What is dede_typename?

dede_typename is a single-value field tag. This means it's designed to pull and display just one piece of information: the name of a channel.

• "Dede": This is the prefix for all DedeCMS template tags, named after the system's old nickname, "Dedecms".
• "type": This refers to a "channel type" in DedeCMS terminology. A channel is essentially a category or section for your content, like "Articles," "Downloads," "Products," or "Pictures."
• "name": This specifies that you want the name of that channel.

How is it Used? (The Syntax)

The basic syntax is very simple:

{dede:typename}

This tag is typically used within a loop that iterates through channels or articles. The most common loop it's used in is the channel loop, which lists all the main channels on your website.

Practical Examples

Let's look at where you would use this tag in your DedeCMS templates.

Example 1: Displaying a List of All Main Channels

This is the most common use case. Imagine you want to create a navigation menu that lists your main content sections. You would use the channel loop and insert dede:typename inside it.

Template Code:

<div class="main-nav">
    <ul>
        {dede:channel type='top'}
        <li><a href="[field:typelink/]">{dede:typename}</a></li>
        {/dede:channel}
    </ul>
</div>

How it Works:

• {dede:channel type='top'}: This loop fetches all "top-level" channels (the main channels you defined in the DedeCMS backend, not their sub-channels).
• <li><a href="[field:typelink/]">{dede:typename}</a></li>: Inside the loop, this code is repeated for each channel.
  • [field:typelink/]: This is another field tag that gets the actual URL link for that channel.
  • {dede:typename}: This is where the magic happens. It gets and displays the name of the channel (e.g., "Company News," "Product Center," "Download").

Resulting HTML:

<div class="main-nav">
    <ul>
        <li><a href="/plus/list.php?tid=1">Company News</a></li>
        <li><a href="/plus/list.php?tid=2">Product Center</a></li>
        <li><a href="/plus/list.php?tid=3">Download</a></li>
        <li><a href="/plus/list.php?tid=4">Contact Us</a></li>
    </ul>
</div>

Example 2: Displaying the Name of the Current Channel

Sometimes you want to show the user which section they are currently in. You can do this by calling dede:typename outside of a loop, but it requires a specific context.

Template Code (e.g., in list_article.htm):

<div class="page-title">
    <h1>You are now in: {dede:typename}</h1>
</div>

How it Works:

When DedeCMS renders a category page (like /plus/list.php?tid=2), it knows which channel it's dealing with. By placing {dede:typename} directly on the template, DedeCMS automatically understands the context and outputs the name of the channel corresponding to the URL's tid (Type ID).

Related Tags and Fields

It's helpful to know dede:typename's "siblings" in the channel loop:

Key Differences: typename vs. typename2

You might also encounter typename2. This is a special field used in the article list template (list_article.htm).

• {dede:typename}: In list_article.htm, this tag will display the name of the main channel the article belongs to. For example, if "Product Reviews" is a sub-channel of "Product Center", typename will show "Product Center".
• {dede:typename2}: This tag will display the name of the current sub-channel. In the same example, typename2 would show "Product Reviews".

This distinction is crucial for building complex category structures.

Summary