adminLTE的自动化菜单

一.

　　model

　　

from django.db import models


# Create your models here.
class MenuInfo(models.Model):
    parent = models.ForeignKey('MenuInfo', blank=True, null=True)
    name = models.CharField('菜单名称', max_length=15)
    menu_icon = models.ForeignKey('IconInfo', verbose_name='图标')
    url = models.CharField('网址', max_length=100, blank=True, null=True)
    show = models.BooleanField('是否显示', default=False)
    priority = models.IntegerField(verbose_name=u'显示优先级', null=True, blank=True, default=-1)

    class Meta:
        db_table = 'MenuInfo'


class IconInfo(models.Model):
    DisplayName = models.CharField(max_length=100)
    ClassName = models.CharField(max_length=100)
    SourceType = models.CharField(max_length=100)
    CreateTime = models.DateTimeField(auto_created=True)

    class Meta:
        db_table = 'IconInfo'

二.

　　模板中间件

　　1.setting的设置

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [os.path.join(BASE_DIR, 'templates')]
        ,
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
                'adminLTE.context_processors.make_menus_processor',
            ],
            'builtins': [                                     # Add this section
                "debugtools.templatetags.debugtools_tags",   # Add this line
            ],
        },
    },
]

　　2.中间件的代码
　　2.1设置了一个全局变量,这样方便设置菜单的active的选中状态

from django.utils.html import format_html
from menuInfo.models import MenuInfo

menu_active = ''

def make_menus_html(menus, parent_id=None, current_parent_id=None, active=None):
    """
    menus = Menus.objects.all()
    :param menus: 寻找的对象，传一个queryset对象
    :param parent_id: 父级菜单ID
    :param current_parent_id: 当前父级菜单ID
    :param active: 激活的菜单名
    :return:
    """
    make_html = ""
    for menu in menus:
        child_menu_flag = "treeview"
        menu_right_flag = '<span class="pull-right-container"><i class="fa fa-angle-left pull-right"></i></span>'
        child_menu = '<li class="{active}"><a href="{menu_url}"><i class="fa fa-circle-o"></i> {menu_name}</a></li>'
        child_menu_html = '<ul class="treeview-menu">{make_child_menu_html}</ul>'
        master_menu_html = """
        <li class="{child_menu_flag} {active}">
            <a href="{menu_url}"><i class="fa {menu_icon}"></i> <span>{menu_name}</span>{menu_right_flag}</a>
            <ul class="treeview-menu">
            {children_menu_html}
            </ul>
        </li>"""
        children_menu_html = """
        <li class="treeview">
            <a href="{menu_url}"><i class="fa fa-circle-o"></i> <span>{menu_name}</span>{menu_right_flag}</a>
            {child_menu_html}
        </li>"""
        parent = menu.parent  # 获取当前菜单的父级菜单
        if current_parent_id == menu.id or (not parent and current_parent_id):
            continue  # 如果当前父级菜单ID是自己或没有父级菜单且有当前父级ID则跳过本次循环
        if not parent and current_parent_id is None:  # 如果没有父级菜单且当前父级ID是None
            make_children_menu_html = make_menus_html(menus, parent_id=parent_id, current_parent_id=menu.id)
            if not make_children_menu_html:
                menu_right_flag = ''
            menu_icon = menu.menu_icon.ClassName
            if hasattr(menu, 'icon_name'):
                menu_icon = menu.icon_name
            active = menu_active.split('/')[1]
            active = '/%s/' % active
            if menu.url == active:
                active_menu = 'active'
            else:
                active_menu = ''
            make_master_menu_html = master_menu_html.format(child_menu_flag=child_menu_flag,
                                                            active=active_menu,
                                                            menu_url=menu.url,
                                                            menu_icon=menu_icon,
                                                            menu_name=menu.name,
                                                            menu_right_flag=menu_right_flag,
                                                            children_menu_html=make_children_menu_html)
            make_html += make_master_menu_html
        elif parent and current_parent_id == parent.id:  # 如果有父级且当前父级ID是自己的父级ID4
            make_child_menu_html = make_menus_html(menus, parent_id=current_parent_id, current_parent_id=menu.id)
            if make_child_menu_html:
                child_menu_html = child_menu_html.format(make_child_menu_html=make_child_menu_html)
                children_menu_html = children_menu_html.format(menu_url=menu.url,
                                                               menu_name=menu.name,
                                                               menu_right_flag=menu_right_flag,
                                                               child_menu_html=child_menu_html)
            else:
                if menu.url == menu_active:
                    active_menu = 'active'
                else:
                    active_menu = ''
                children_menu_html = child_menu.format(menu_url=menu.url, menu_name=menu.name, active=active_menu)
            make_html += children_menu_html
        else:
            continue
    return make_html


def make_menus_processor(request):
    menus_obj = MenuInfo.objects.filter(show=0)
    global menu_active
    menu_active = request.path
    menus = make_menus_html(menus=menus_obj, active=menu_active)
    return {'menus': format_html(menus)}