wagtail

Question

wagtail bakerydemo 有一套不错的菜单，我也想包括主页。

Wagtail 期望页面是 home 的子页面，它位于根目录，而菜单遵循层次结构 -

所以如果我在 navigation_tags

中更改 top_menu

https://github.com/wagtail/bakerydemo/blob/master/bakerydemo/base/templatetags/navigation_tags.py#L42

获取这样的菜单项：

menuitems = (parent.get_siblings()).live().in_menu()

主页出现了，但菜单将其视为祖先，而不是平等的。

知道如何更改它以使 'home' 与其直系子项相同吗？

Answer 1

实现此目的的一种方法是在主页前面添加一个新的 menuitem。

假设您只在主菜单中使用了这个 top_menu 标签，您还可以假设传递到标签中的 parent 将始终是 site_root，这反过来是主页。

唯一的变化是在menuitems的for循环之后和模板上下文返回之前。

示例： 已更新 navigation_tags.py

    @register.inclusion_tag('tags/top_menu.html', takes_context=True)
    def top_menu(context, parent, calling_page=None):
        menuitems = parent.get_children().live().in_menu()
        for menuitem in menuitems:
            menuitem.show_dropdown = has_menu_children(menuitem)
            # We don't directly check if calling_page is None since the template
            # engine can pass an empty string to calling_page
            # if the variable passed as calling_page does not exist.
            menuitem.active = (calling_page.url.startswith(menuitem.url)
                               if calling_page else False)
        # assumes menu is only called with parent=site_root and is live + ignores `in_menu` field on homepage
        home_page = parent
        home_page.show_dropdown = False
        home_page.active = (
            # must match urls exactly as all URLs will start with homepage URL
            (calling_page.url == home_page.url) if calling_page else False
        )
        # append the home page (site_root) to the start of the menuitems
        # menuitems is actually a queryset so we need to force it into a list
        menuitems = [home_page] + list(menuitems)
        return {
            'calling_page': calling_page,
            'menuitems': menuitems,
            # required by the pageurl tag that we want to use within this template
            'request': context['request'],
        }

注意：menuitems 实际上是 queryset not a list, which means to append an item to it we need to force it to become a list. This may not be the most performant way to do this, you could adjust the queryset query 始终包含主页，但这样就完成了工作。

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