class CourseAdmin(object):
  # 設(shè)置列表顯示字段
  list_display = ['name', 'course_org', 'detail','degree','learn_times','students','fav_nums','image','click_nums','add_time']
  # 設(shè)置列表查詢字段
  search_field = ['name', 'course_org', 'detail','degree','learn_times','students','fav_nums','image','click_nums']
  # 設(shè)置列表過濾字段
  list_filter = ['name', 'course_org', 'detail','degree','learn_times','students','fav_nums','image','click_nums','add_time']
  # 設(shè)置顯示圖標(biāo)
  model_icon = 'fa fa-check-square'
  # 設(shè)置字段可以直接在列表頁修改
  list_editable=['desc','degree']
  # 設(shè)置默認(rèn)排序
  ordering=['-click_nums']
  # 設(shè)置詳情頁面只讀顯示
  readonly_fields=['fav_nums','click_nums']
  # 設(shè)置詳情頁面不顯示某個字段
  exclude=['add_time']
   #自動刷新列表頁面（秒數(shù)）
  refresh_times = [3,5] 

	def queryset(self):
	    # 重載queryset方法，進(jìn)行過濾
	    qs = super(CourseAdmin, self).queryset()
	    # 只顯示is_banner=True的課程
	    qs = qs.filter(is_banner=False)
	    return qs 
	  
	def save_models(self):
    # 在保存課程的時候統(tǒng)計課程機(jī)構(gòu)的課程數(shù)
    # obj實際是一個course對象
    obj = self.new_obj
    # 對當(dāng)前課程進(jìn)行保存，否則統(tǒng)計的課程數(shù)會少一個
    obj.save()
    if obj.course_org is not None:
      course_org = obj.course_org
      course_org.course_nums = Course.objects.filter(course_org=course_org).count()
      course_org.save()   

class CourseOrgAdmin(object):
  list_display = ['name', 'desc', 'click_num','fav_nums','image','address','city','add_time']
  search_fields = ['name', 'desc', 'click_num','fav_nums','image','address','city']
  list_filter = ['name', 'desc', 'click_num','fav_nums','image','address','city','add_time']
  # 某一個model指向它時，它是以ajax加載的方式來完成的，通過搜索來進(jìn)行添加某個字段，這樣可以避免數(shù)據(jù)量過大時，把所有數(shù)據(jù)都加載進(jìn)來
  relfield_style='fk-ajax'

class LessonInline(object):
  model = Lesson
  extra = 0

class CourseResourceInline(object):
  model = CourseResource
  extra = 0

#inlines 實現(xiàn)在添加course的同時，在同頁面添加相應(yīng)的章節(jié)與課程資源
class CourseAdmin(object):
  inlines = [LessonInline,CourseResourceInline]  #增加章節(jié)和課程資源

# register中可以看出register中還有一個參數(shù)admin_class=None:
def register(self, model_or_iterable, admin_class=None, **options):
  if not admin_class:
    admin_class = ModelAdmin

class UserAdmin(ModelAdmin):
  list_display = ('name', 'email', 'ut')
admin.site.register(UserInfo, UserAdmin)