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@@ -31,7 +31,7 @@ class Admin
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use HasAssets;
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use HasHtml;
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- const VERSION = '2.0.3-beta';
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+ const VERSION = '2.1.0-beta';
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const SECTION = [
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// 往 <head> 标签内输入内容
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@@ -387,7 +387,9 @@ class Admin
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*/
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public static function content($value)
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{
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- static::context()->add('contents', $value);
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+ if ($value !== null) {
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+ static::context()->add('contents', $value);
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+ }
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}
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/**
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@@ -401,10 +403,14 @@ class Admin
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/**
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* 渲染内容.
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*
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- * @return string
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+ * @return string|void
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*/
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public static function renderContents()
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{
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+ if (! static::hasContents()) {
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+ return;
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+ }
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+
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$contents = static::context()->getArray('contents');
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$results = '';
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