blocks|key|326224|text|您需要在模块中实现hook_menu。示例：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|326225|<?php
function+mymodule_menu()+{
++$items['mymodule/links']+=+array(
++++'title'+=>+'Links',+
++++'page+callback'+=>+'mymodule_links_page',+
++++'access+arguments'+=>+array('access+content'),+
++++'type'+=>+MENU_SUGGESTED_ITEM,
++);
++return+$items;
}
?>|code-block|syntax|javascript|326226|'type'+=>+MENU_SUGGESTED_ITEM,部件使其成为可选的，因此它可以由最终用户启用-这就是您所说的“有条件地”的意思吗？如果没有，请解释一下你在寻找什么样的“有条件的”。|style|CODE|326227|entityMap|0|LINK|mutability|MUTABLE|url|http://api.drupal.org/api/drupal/developer--hooks--core.php/function/hook_menu/6^0|9|9|0|0|0|0|U|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|F|7|Y|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|Z|8|@$A|10|B|11|K|L]]|9|@]|C|$]]|$1|M|3|-4|5|6|7|12|8|@]|9|@]|C|$]]]|N|$O|$5|P|Q|R|C|$S|T]]]]

You need to implement <a href="http://api.drupal.org/api/drupal/developer--hooks--core.php/function/hook_menu/6" rel="nofollow">hook_menu</a> in your module. Example:

<pre><code>&lt;?php
function mymodule_menu() {
 $items['mymodule/links'] = array(
 'title' =&gt; 'Links', 
 'page callback' =&gt; 'mymodule_links_page', 
 'access arguments' =&gt; array('access content'), 
 'type' =&gt; MENU_SUGGESTED_ITEM,
 );
 return $items;
}
?&gt;
</code></pre>

The <code>'type' =&gt; MENU_SUGGESTED_ITEM,</code> part makes it optional, so it can be enabled by the end user - is that what you meant with "conditionally"? If not, please explain what kind of "conditionally" you're looking for.

blocks|key|326251|text|菜单系统是缓存的，所以你不能根据用户、查看的页面、自定义逻辑等随意添加或删除菜单项。也就是说，如果不清除菜单缓存，就不能添加或删除菜单项，这将导致严重的性能影响。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|326252|要创建此效果，您可以创建一些自定义逻辑来定义菜单项上的访问控制。由于Drupal隐藏了用户无权访问的菜单项，因此在某些情况下可以拒绝隐藏菜单项的权限。这是一个有点老土的解决方案。|326253|另一个解决方案，我更喜欢，将使用js或css来隐藏或显示菜单。您可以在主体上动态添加/删除一个类，以确定是否应该显示菜单项。但是，如果您需要几个这样的菜单项，这将很快变得无法管理。|326254|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

The menu system is cached, so you can't add or remove menu items as you please based on user, page viewed, custom logic etc. That is you can't do it without having to clear the menu cache which would cause a severe performance hit.

What you could do, to create this effect is to create some custom logic to define the access control on the menu item. Since Drupal hides menu items that users doesn't have access to, you could under certain circumstances deny permission to hide the menu item. This is a bit hackish solution.

Another solution which I would prefer, would be to use js or css to hide or show the menu. You could dynamically add/remove a class on the body to determine if the menu item should be shown or not. This would quickly become unmanagable if you need several of these kind of menu items, however.

blocks|key|3990472|text|或者，您可以使用'type'+=>+MENU_NORMAL_ITEM,，因为它在默认情况下处于启用状态，但可以随时禁用。当然，这取决于您的偏好。有关更多参考信息，请参阅http://api.drupal.org/api/drupal/includes--menu.inc/group/menu/7。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3990473|在自定义菜单中使用模块定义的菜单项时需要知道的另一件事是，如何以编程方式创建要使用的菜单，以便所有内容都是“开箱即用”的。只需添加一个mymodule.install-file，您就可以在其中放置以下代码：|3990474|<?php++
function+mymodule_install()+{++
++$menu+=+array(++
++++'menu_name'+=>+'links',++
++++'title'+=>+'My+Custom+Links',++
++++'description'+=>+'Descriptive+text.',++
++);++
++menu_save($menu);++
}++
?>|code-block|syntax|javascript|3990475|如果你有一个卸载功能，不要忘记不仅要停用模块，还要卸载它。重新启用模块，刷新缓存，菜单项应该在那里！|3990476|entityMap|0|LINK|mutability|MUTABLE|url|http://api.drupal.org/api/drupal/includes--menu.inc/group/menu/7^0|8|R|2C|1S|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@$9|Z|A|10|1|11]]|E|$]]|$1|F|3|G|5|6|7|12|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|13|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|14|8|@]|D|@]|E|$]]|$1|O|3|-4|5|6|7|15|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]]]

Or you can use the <code>'type' =&gt; MENU_NORMAL_ITEM,</code> since it is enabled by default, but can be disabled any time. This of course depends on your preferences. See <a href="http://api.drupal.org/api/drupal/includes--menu.inc/group/menu/7" rel="nofollow">http://api.drupal.org/api/drupal/includes--menu.inc/group/menu/7</a> for further reference.

Another good thing to know when using module defined menu items in custom menus might be how to programmatically create the menu you want to use so that everything is created "out of the box". Simply add a mymodule.install-file where you put the following code: 

<pre><code>&lt;?php 
function mymodule_install() { 
 $menu = array( 
 'menu_name' =&gt; 'links', 
 'title' =&gt; 'My Custom Links', 
 'description' =&gt; 'Descriptive text.', 
 ); 
 menu_save($menu); 
} 
?&gt;
</code></pre>

If you have an uninstall function, don't forget to not only deactivate the module, but also to uninstall it. Reenable the module, flush your caches and the menu item should be there!

blocks|key|1512300|text|您可以根据条件动态显示或隐藏菜单项(访问回调)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1512301|下面是一个来自https://drupal.org/project/examples的示例：|offset|length|1512302|<?php
function+mymodule_menu()+{
++$items+=+array();

++$items['my-menu-item']+=+array(
++++'title'+=>+'My+Menu',
++++'description'+=>+'My+description',
++++'page+callback'+=>+'my_page_link_callback_function_name',
++++'access+callback'+=>+'can_the_user_see_this_item',
++++'expanded'+=>+TRUE,
++++'weight'+=>+-100,
++++'menu_name'+=>+'primary-links',
++);+

++return+$items;
}

//+Here+we+determine+if+the+user+can+or+can+not+see+the+item.
function+can_the_user_see_this_item(){
++if+(MY_CONDITION){
++++return+TRUE;
++}
++else+{
++++return+FALSE;
++}
}|code-block|syntax|javascript|1512303|entityMap|0|LINK|mutability|MUTABLE|url|https://drupal.org/project/examples^0|0|7|Z|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@$D|U|E|V|1|W]]|A|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@]|A|$I|J]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

You can dynamically show or hide a menu item based on a condition ( access callback ).

Here is an example from <a href="https://drupal.org/project/examples" rel="nofollow">https://drupal.org/project/examples</a>: 

<pre><code>&lt;?php
function mymodule_menu() {
 $items = array();

 $items['my-menu-item'] = array(
 'title' =&gt; 'My Menu',
 'description' =&gt; 'My description',
 'page callback' =&gt; 'my_page_link_callback_function_name',
 'access callback' =&gt; 'can_the_user_see_this_item',
 'expanded' =&gt; TRUE,
 'weight' =&gt; -100,
 'menu_name' =&gt; 'primary-links',
 ); 

 return $items;
}

// Here we determine if the user can or can not see the item.
function can_the_user_see_this_item(){
 if (MY_CONDITION){
 return TRUE;
 }
 else {
 return FALSE;
 }
}
</code></pre>

blocks|key|2394584|text|使用menu_link_save()函数|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2394585|Saves+a+menu+link.

After+calling+this+function,+rebuild+the+menu+cache+using+menu_cache_clear_all().

Parameters

$item:+An+associative+array+representing+a+menu+link+item,+with+elements:

link_path:+(required)+The+path+of+the+menu+item,+which+should+be+normalized+first+by+calling+drupal_get_normal_path()+on+it.
link_title:+(required)+Title+to+appear+in+menu+for+the+link.
menu_name:+(optional)+The+machine+name+of+the+menu+for+the+link.+Defaults+to+'navigation'.
weight:+(optional)+Integer+to+determine+position+in+menu.+Default+is+0.
expanded:+(optional)+Boolean+that+determines+if+the+item+is+expanded.
options:+(optional)+An+array+of+options,+see+l()+for+more.
mlid:+(optional)+Menu+link+identifier,+the+primary+integer+key+for+each+menu+link.+Can+be+set+to+an+existing+value,+or+to+0+or+NULL+to+insert+a+new+link.
plid:+(optional)+The+mlid+of+the+parent.
router_path:+(optional)+The+path+of+the+relevant+router+item.
$existing_item:+Optional,+the+current+record+from+the+{menu_links}+table+as+an+array.

$parent_candidates:+Optional+array+of+menu+links+keyed+by+mlid.+Used+by+_menu_navigation_links_rebuild()+only.

Return+value

The+mlid+of+the+saved+menu+link,+or+FALSE+if+the+menu+link+could+not+be+saved.|code-block|syntax|javascript|2394586|entityMap|0|LINK|mutability|MUTABLE|url|https://api.drupal.org/api/drupal/includes!menu.inc/function/menu_link_save/7^0|2|G|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

Use <a href="https://api.drupal.org/api/drupal/includes!menu.inc/function/menu_link_save/7" rel="nofollow">menu_link_save()</a> function

<pre><code>Saves a menu link.

After calling this function, rebuild the menu cache using menu_cache_clear_all().

Parameters

$item: An associative array representing a menu link item, with elements:

link_path: (required) The path of the menu item, which should be normalized first by calling drupal_get_normal_path() on it.
link_title: (required) Title to appear in menu for the link.
menu_name: (optional) The machine name of the menu for the link. Defaults to 'navigation'.
weight: (optional) Integer to determine position in menu. Default is 0.
expanded: (optional) Boolean that determines if the item is expanded.
options: (optional) An array of options, see l() for more.
mlid: (optional) Menu link identifier, the primary integer key for each menu link. Can be set to an existing value, or to 0 or NULL to insert a new link.
plid: (optional) The mlid of the parent.
router_path: (optional) The path of the relevant router item.
$existing_item: Optional, the current record from the {menu_links} table as an array.

$parent_candidates: Optional array of menu links keyed by mlid. Used by _menu_navigation_links_rebuild() only.

Return value

The mlid of the saved menu link, or FALSE if the menu link could not be saved.
</code></pre>

I wish to conditionally add an item to a menu. I have a custom module and a menu called "links". How would I add an item to a menu in my module code?

Drupal programmatically adding an item to a menu

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我希望有条件地向菜单中添加一项。我有一个自定义模块和一个叫做“链接”的菜单。如何在模块代码中将菜单项添加到菜单中？

问Drupal以编程方式向菜单添加项目
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