Django内置的Admin是对于model中对应的数据表进行增删改查提供的组件,使用方式有:
依赖APP:
django.contrib.auth
django.contrib.contenttypes
django.contrib.messages
django.contrib.sessions 模板的context_processors:
django.contrib.auth.context_processors.auth
django.contrib.messages.context_processors.messages 中间件:
django.contrib.auth.middleware.AuthenticationMiddleware
django.contrib.messages.middleware.MessageMiddleware
Django Admin内部依赖
一. 配置路由
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urlpatterns = [
url(r '^admin/' , admin.site.urls),
]
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当前配置的路由可以创建一些路由映射关系:
/admin/
/admin/login/
/admin/logout/
/admin/password_change/
/admin/password_change/done/
/admin/app名称/model名称/
/admin/app名称/model名称/add/
/admin/app名称/model名称/ID值/history/
/admin/app名称/model名称/ID值/change/
/admin/app名称/model名称/ID值/delete/
二. 定制Admin
在admin.py中只需要讲Mode中的某个类注册,即可在Admin中实现增删改查的功能,如:
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admin.site.register(models.UserInfo) |
但是,这种方式比较简单,如果想要进行更多的定制操作,需要利用ModelAdmin进行操作,如:
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方式一: class UserAdmin(admin.ModelAdmin):
list_display = ( 'user' , 'pwd' ,)
admin.site.register(models.UserInfo, UserAdmin) # 第一个参数可以是列表
方式二: @admin .register(models.UserInfo) # 第一个参数可以是列表
class UserAdmin(admin.ModelAdmin):
list_display = ( 'user' , 'pwd' ,)
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ModelAdmin中提供了大量的可定制功能,如
1. list_display,列表时,定制显示的列。
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@admin .register(models.UserInfo)
class UserAdmin(admin.ModelAdmin):
list_display = ( 'user' , 'pwd' , 'xxxxx' )
def xxxxx( self , obj):
return "xxxxx"
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2. list_display_links,列表时,定制列可以点击跳转。
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@admin .register(models.UserInfo)
class UserAdmin(admin.ModelAdmin):
list_display = ( 'user' , 'pwd' , 'xxxxx' )
list_display_links = ( 'pwd' ,)
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3. list_filter,列表时,定制右侧快速筛选。
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from django.utils.translation import ugettext_lazy as _
@admin .register(models.UserInfo)
class UserAdmin(admin.ModelAdmin):
list_display = ( 'user' , 'pwd' )
class Ugg(admin.SimpleListFilter):
title = _( 'decade born' )
parameter_name = 'xxxxxx'
def lookups( self , request, model_admin):
"""
显示筛选选项
:param request:
:param model_admin:
:return:
"""
return models.UserGroup.objects.values_list( 'id' , 'title' )
def queryset( self , request, queryset):
"""
点击查询时,进行筛选
:param request:
:param queryset:
:return:
"""
v = self .value()
return queryset. filter (ug = v)
list_filter = ( 'user' ,Ugg,)
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4. list_select_related,列表时,连表查询是否自动select_related
5. 分页相关
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# 分页,每页显示条数 list_per_page = 100
# 分页,显示全部(真实数据<该值时,才会有显示全部) list_max_show_all = 200
# 分页插件 paginator = Paginator
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6. list_editable,列表时,可以编辑的列
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@admin .register(models.UserInfo)
class UserAdmin(admin.ModelAdmin):
list_display = ( 'user' , 'pwd' , 'ug' ,)
list_editable = ( 'ug' ,)
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7. search_fields,列表时,模糊搜索的功能
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@admin .register(models.UserInfo)
class UserAdmin(admin.ModelAdmin):
search_fields = ( 'user' , 'pwd' )
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8. date_hierarchy,列表时,对Date和DateTime类型进行搜索
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@admin .register(models.UserInfo)
class UserAdmin(admin.ModelAdmin):
date_hierarchy = 'ctime'
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9. preserve_filters,详细页面,删除、修改,更新后跳转回列表后,是否保留原搜索条件
10. save_as = False,详细页面,按钮为“Sava as new” 或 “Sava and add another”
11. save_as_continue = True,点击保存并继续编辑
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save_as_continue = True
# 如果 save_as=True,save_as_continue = True, 点击Sava as new 按钮后继续编辑。 # 如果 save_as=True,save_as_continue = False,点击Sava as new 按钮后返回列表。 New in Django 1.10 .
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12. save_on_top = False,详细页面,在页面上方是否也显示保存删除等按钮
13. inlines,详细页面,如果有其他表和当前表做FK,那么详细页面可以进行动态增加和删除
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class UserInfoInline(admin.StackedInline): # TabularInline
extra = 0
model = models.UserInfo
class GroupAdminMode(admin.ModelAdmin):
list_display = ( 'id' , 'title' ,)
inlines = [UserInfoInline, ]
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14. action,列表时,定制action中的操作
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@admin .register(models.UserInfo)
class UserAdmin(admin.ModelAdmin):
# 定制Action行为具体方法
def func( self , request, queryset):
print ( self , request, queryset)
print (request.POST.getlist( '_selected_action' ))
func.short_description = "中文显示自定义Actions"
actions = [func, ]
# Action选项都是在页面上方显示
actions_on_top = True
# Action选项都是在页面下方显示
actions_on_bottom = False
# 是否显示选择个数
actions_selection_counter = True
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15. 定制HTML模板
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add_form_template = None
change_form_template = None
change_list_template = None
delete_confirmation_template = None
delete_selected_confirmation_template = None
object_history_template = None
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16. raw_id_fields,详细页面,针对FK和M2M字段变成以Input框形式
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@admin .register(models.UserInfo)
class UserAdmin(admin.ModelAdmin):
raw_id_fields = ( 'FK字段' , 'M2M字段' ,)
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17. fields,详细页面时,显示字段的字段
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@admin .register(models.UserInfo)
class UserAdmin(admin.ModelAdmin):
fields = ( 'user' ,)
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18. exclude,详细页面时,排除的字段
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@admin .register(models.UserInfo)
class UserAdmin(admin.ModelAdmin):
exclude = ( 'user' ,)
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19. readonly_fields,详细页面时,只读字段
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@admin .register(models.UserInfo)
class UserAdmin(admin.ModelAdmin):
readonly_fields = ( 'user' ,)
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20. fieldsets,详细页面时,使用fieldsets标签对数据进行分割显示
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@admin .register(models.UserInfo)
class UserAdmin(admin.ModelAdmin):
fieldsets = (
( '基本数据' , {
'fields' : ( 'user' , 'pwd' , 'ctime' ,)
}),
( '其他' , {
'classes' : ( 'collapse' , 'wide' , 'extrapretty' ), # 'collapse','wide', 'extrapretty'
'fields' : ( 'user' , 'pwd' ),
}),
)
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21. 详细页面时,M2M显示时,数据移动选择(方向:上下和左右)
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@admin .register(models.UserInfo)
class UserAdmin(admin.ModelAdmin):
filter_vertical = ( "m2m字段" ,) # 或filter_horizontal = ("m2m字段",)
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22. ordering,列表时,数据排序规则
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@admin .register(models.UserInfo)
class UserAdmin(admin.ModelAdmin):
ordering = ( '-id' ,)
或
def get_ordering( self , request):
return [ '-id' , ]
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23. view_on_site,编辑时,是否在页面上显示view on set
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view_on_site = False
或 def view_on_site( self , obj):
return 'https://www.baidu.com'
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24. radio_fields,详细页面时,使用radio显示选项(FK默认使用select)
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radio_fields = { "ug" : admin.VERTICAL} # 或admin.HORIZONTAL
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25. show_full_result_count = True,列表时,模糊搜索后面显示的数据个数样式
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@admin .register(models.UserInfo)
class UserAdmin(admin.ModelAdmin):
# show_full_result_count = True # 1 result (12 total)
# show_full_result_count = False # 1 result (Show all)
search_fields = ( 'user' ,)
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26. formfield_overrides = {},详细页面时,指定现实插件
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from django.forms import widgets
from django.utils.html import format_html
class MyTextarea(widgets.Widget):
def __init__( self , attrs = None ):
# Use slightly better defaults than HTML's 20x2 box
default_attrs = { 'cols' : '40' , 'rows' : '10' }
if attrs:
default_attrs.update(attrs)
super (MyTextarea, self ).__init__(default_attrs)
def render( self , name, value, attrs = None ):
if value is None :
value = ''
final_attrs = self .build_attrs(attrs, name = name)
return format_html( '<textarea {}>\r\n{}</textarea>' ,final_attrs, value)
@admin .register(models.UserInfo)
class UserAdmin(admin.ModelAdmin):
formfield_overrides = {
models.models.CharField: { 'widget' : MyTextarea},
}
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27. prepopulated_fields = {},添加页面,当在某字段填入值后,自动会将值填充到指定字段。
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@admin .register(models.UserInfo)
class UserAdmin(admin.ModelAdmin):
prepopulated_fields = { "email" : ( "user" , "pwd" ,)}
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PS: DjangoAdmin中使用js实现功能,页面email字段的值会在输入:user、pwd时自动填充
28. form = ModelForm,用于定制用户请求时候表单验证
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from app01 import models
from django.forms import ModelForm
from django.forms import fields
class MyForm(ModelForm):
others = fields.CharField()
class Meta:
model = models = models.UserInfo
fields = "__all__"
@admin .register(models.UserInfo)
class UserAdmin(admin.ModelAdmin):
form = MyForm
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29. empty_value_display = "列数据为空时,显示默认值"
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@admin .register(models.UserInfo)
class UserAdmin(admin.ModelAdmin):
empty_value_display = "列数据为空时,默认显示"
list_display = ( 'user' , 'pwd' , 'up' )
def up( self ,obj):
return obj.user
up.empty_value_display = "指定列数据为空时,默认显示"
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