django入门7之django template和xadmin常用技巧

<li {% if request.path|slice:'' == '/course' %}class="active"{% endif %}>

根据访问路径url来判断

如访问：http://127.0.0.1:8000/course/list 截取request.path的7位如果是 /course 就代表是课程相关的链接

<li  {% if request.path|slice:'' == '/org/teacher/list' %}class="active"{% endif %}>

获取用户消息个数

注销用户，登出用户

from django.contrib.auth import authenticate, login, logout

class LogoutView(View):

    """

    用户登出

    """

    def get(self, request):

        logout(request)

        from django.core.urlresolvers import reverse

        return HttpResponseRedirect(reverse("index"))

做除法的方式：

{% for org in course_orgs %}

<li class="{% if forloop.counter|divisibleby:'5' %}five{% endif %}">

    <a href="{% url 'org:org_home' org.id %}">

        <div class="company">

            <img width="" height="" src="{{ MEDIA_URL }}{{ org.image }}"/>

            <div class="score">

                <div class="circle">

                    <h2>{{ org.tag }}</h2>

                </div>

            </div>

        </div>

        <p><span class="key" title="{{ org.name }}">{{ org.name }}</span></p>

    </a>

</li>

{% endfor %}

做加法：

{% for course in courses %}

<div class="module1_{{ forloop.counter|add:2 }} box">

    <a href="{% url 'course:course_detail' course.id %}">

        <img width="" height="" src="{{ MEDIA_URL }}{{ course.image }}"/>

    </a>

    <div class="des">

        <a href="{% url 'course:course_detail' course.id %}">

            <h2 title="{{ course.name }}">{{ course.name }}</h2>

        </a>

        <span class="fl">难度：<i class="key">{{ course.get_degree_display }}</i></span>

        <span class="fr">学习人数：{{ course.students }}</span>

    </div>

    <div class="bottom">

        <span class="fl" title="{{ course.course_org.name }}">{{ course.course_org.name }}</span>

        <span class="star fr">{{ course.fav_nums }}</span>

    </div>

</div>

{% endfor %}

设置404页面

# 全局404页面配置

handle404 = 'users.views.page_not_found'

函数

def page_not_fount(request):

    # 全局404处理函数

    from django.shortcuts import render_to_response

    response = render_to_response('404.html', {})

    response.status_code = 404

    return response

settings.py中的配置

DEBUG = False

ALLOWED_HOSTS = ['*']

首页模拟出500错误

修改后台导航图标

https://fontawesome.com/updates?from=io

font awesome

下载新版本

http://fontawesome.io

替换xadmin的相关样式

找到喜欢的图标复制替换即可

直接替换class样式

效果

加入排序功能：

课程默认按照点击数倒序排列

对某些字段进行只读属性添加

# 有些字段可以修改是不合理的，比如点击数和收藏数，可以改为只读

readonly_fields = ['click_nums', 'fav_nums']

Normal
0

false
false
false

EN-US
ZH-CN
X-NONE

/* Style Definitions */
table.MsoNormalTable
{mso-style-name:普通表格;
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-parent:"";
mso-padding-alt:0in 5.4pt 0in 5.4pt;
mso-para-margin-top:0in;
mso-para-margin-right:0in;
mso-para-margin-bottom:8.0pt;
mso-para-margin-left:0in;
line-height:107%;
mso-pagination:widow-orphan;
font-size:11.0pt;
font-family:"Calibri",sans-serif;
mso-ascii-font-family:Calibri;
mso-ascii-theme-font:minor-latin;
mso-hansi-font-family:Calibri;
mso-hansi-theme-font:minor-latin;
mso-bidi-font-family:"Times New Roman";
mso-bidi-theme-font:minor-bidi;}

Normal
0

false
false
false

EN-US
ZH-CN
X-NONE

效果

不显示某些字段

Normal
0

false
false
false

EN-US
ZH-CN
X-NONE

Xadmin在一个模块中嵌套另外一个模块

课程中嵌套章节信息，只能做一层嵌套：即只能在课程中嵌套章节，而不能在章节中嵌套视频信息

Normal
0

false
false
false

EN-US
ZH-CN
X-NONE

也可以嵌套多个模块

Normal
0

false
false
false

EN-US
ZH-CN
X-NONE

将一个model注册为两个model

class BannerCourse(Course):

    # 不生成表又可以注册model

    class Meta:

        verbose_name = "轮播课程"

        verbose_name_plural = verbose_name

        proxy = True

Normal
0

false
false
false

EN-US
ZH-CN
X-NONE

根据是否轮播进行筛选区分成两个模块

使用django的queryset进行筛选

class BannerCourseAdmin(object):

    # 后台显示的字段

    list_display = ['name', 'desc', 'detail', 'degree', 'learn_time', 'students', 'fav_nums', 'click_nums', 'add_time']

    # 后台搜索的字段

    search_fields = ['name', 'desc', 'detail', 'degree', 'students', 'fav_nums', 'click_nums']

    # 筛选功能

    list_filter = ['name', 'desc', 'detail', 'degree', 'learn_time', 'students', 'fav_nums', 'click_nums', 'add_time']

    # 加入点击数倒数排列

    ordering = ['-click_nums']

    # 有些字段可以修改是不合理的，比如点击数和收藏数，可以改为只读

    readonly_fields = ['click_nums']

    # 不显示某些字段

    exclude = ['fav_nums']

    # 课程中嵌套章节

    inlines = [LessonInline, CourseResourceInline]

    def queryset(self):

        qs = super(BannerCourseAdmin, self).queryset()

        qs = qs.filter(is_banner=True)

        return qs