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Chapter 18. Tips & Tricks[使用技巧和经验] |
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Default Variable Handling
默认变量处理
If a variable is used frequently throughout your templates, applying the default
modifier every time it is mentioned can get a bit ugly. You can remedy this
by assigning the variable its default value with the assign function.
如果一个变量在你的整个模板里被经常使用，而当你每次要用到这个变量的时候就给它赋默认的值，那将是无法忍受的。你可以通过使用 assign[赋值]这个函数来给这个变量赋上它的默认值来你补救。
Example 18-2. Assigning a template variable its default value
例 18-2.赋给一个模板变量默认的值
{* do this somewhere at the top of your template *}
{assign var="title" value=$title|default:"no title"}
{* if $title was empty, it now contains the value "no title" when you print it *}
{$title}
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Tips & Tricks
[使用技巧和经验]
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Passing variable title to header template
[传递变量标题给头模板]
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