为省、市、区添加缓存
配置缓存
1.安装扩展模块 drf-extensions
1
2
3
4
5
6
7
8
9
10
11
12
13
| leazhi@ubuntuhome:~$ workon haoke_small
(haoke_small) leazhi@ubuntuhome:~$ pip install drf-extensions
Looking in indexes: https://pypi.tuna.tsinghua.edu.cn/simple
Collecting drf-extensions
Downloading https://pypi.tuna.tsinghua.edu.cn/packages/58/15/ee46fa8293a51b68c60699806c0c2f55ff527613d83739e27b8f85444990/drf_extensions-0.7.1-py2.py3-none-any.whl (21 kB)
Requirement already satisfied: djangorestframework>=3.9.3 in ./.env/haoke_small/lib/python3.10/site-packages (from drf-extensions) (3.14.0)
Requirement already satisfied: django>=3.0 in ./.env/haoke_small/lib/python3.10/site-packages (from djangorestframework>=3.9.3->drf-extensions) (3.2.20)
Requirement already satisfied: pytz in ./.env/haoke_small/lib/python3.10/site-packages (from djangorestframework>=3.9.3->drf-extensions) (2023.3)
Requirement already satisfied: asgiref<4,>=3.3.2 in ./.env/haoke_small/lib/python3.10/site-packages (from django>=3.0->djangorestframework>=3.9.3->drf-extensions) (3.7.2)
Requirement already satisfied: sqlparse>=0.2.2 in ./.env/haoke_small/lib/python3.10/site-packages (from django>=3.0->djangorestframework>=3.9.3->drf-extensions) (0.4.4)
Requirement already satisfied: typing-extensions>=4 in ./.env/haoke_small/lib/python3.10/site-packages (from asgiref<4,>=3.3.2->django>=3.0->djangorestframework>=3.9.3->drf-extensions) (4.7.1)
Installing collected packages: drf-extensions
Successfully installed drf-extensions-0.7.1
|
2.编辑配置文件 dev.py，在文件默认添加如下配置：
1
2
3
4
5
6
7
8
9
10
11
12
|
...
REST_FRAMEWORK_EXTENSIONS = {
'DEFAULT_CACHE_RESPONSE_TIMEOUT': 60 * 60 * 24,
'DEFAULT_USE_CACHE': 'default',
}
|
为省市区数据缓存添加视图：
1.编辑子应用 areas 目录下的视图文件 views.py，添加如下视图：
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
|
...
from rest_framework_extensions.cache.mixins import CacheResponseMixin
...
class AreasViewSet(CacheResponseMixin, ModelViewSet):
pagination_class = None
def get_queryset(self):
if self.action == 'list':
return Area.objects.filter(parent=None)
else:
return Area.objects.all
def get_serializer_class(self):
if self.action == 'list':
return AreaModelSerializer
else:
return SubAreaModelSerializer
def list(self, request, *args, **kwargs):
queryset = self.get_queryset()
serializer = self.get_serializer_class()(queryset, many=True)
return render(request, serializer.data, status=200)
|
收获地址的增、删、改、查
准备工作
1.在项目子目录 haoke 目录下新建一个包目录 utils，然后在该目录下新建一个 models.py 文件，添加如下模型类：
1
2
3
4
5
6
7
8
9
10
| # utils/models.py
from django.db import models
class BaseModel (models.Model):
create_time = models.DateTimeField(auto_now_add=True, verbose_name='创建时间')
update_time = models.DateTimeField(auto_now=True, verbose_name='更新时间')
class Meta:
abstract = True # 说明是抽象模型类，用于继承使用，数据库迁移时不会创建 BaseModel 的表
|
2.编辑子应用 users 目录下的 models.py，添加如下模型类：
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
...
from haoke.utils.models import BaseModel
...
class User(AbstractUser):
...
email_active = models.BooleanField(default=False, verbose_name='邮箱是否激活')
default_address = models.ForeignKey('Address', related_name='users', null=True, blank=True, on_delete=models.SET_NULL, verbose_name='默认地址')
class Meta:
...
class Address(BaseModel):
"""
地址模型类
"""
user = models.ForeignKey(User, on_delete=models.CASCADE, related_name='addresses', verbose_name='用户')
title = models.CharField(max_length=20, verbose_name='地址名称')
receiver = models.CharField(max_length=20, verbose_name='收货人')
province = models.ForeignKey('areas.Area', on_delete=models.PROTECT,related_name='province_addresses', verbose_name='省')
city = models.ForeignKey('areas.Area',on_delete=models.PROTECT, related_name='city_addresses', verbose_name='市')
district = models.ForeignKey('areas.Area', on_delete=models.PROTECT, related_name='district_addresses', verbose_name='区')
place = models.CharField(max_length=50, verbose_name='地址')
mobile = models.CharField(max_length=11, verbose_name='手机号')
tel = models.CharField(max_length=20, null=True, blank=True, default='', verbose_name='固定电话')
email = models.CharField(max_length=30, null=True, blank=True, default='', verbose_name='邮箱')
is_deleted = models.BooleanField(default=False, verbose_name='逻辑删除')
class Meta:
db_table = 'tb_address'
verbose_name = '用户地址'
verbose_name_plural = verbose_name
|
3.数据迁移，生成表：
1
2
3
4
| (haoke_small) leazhi@ubuntuhome:~$ cd small/haoke/
(haoke_small) leazhi@ubuntuhome:~/small/haoke$ python manage.py makemigrations
(haoke_small) leazhi@ubuntuhome:~/small/haoke$ python manage.py migrate
|
增
添加序列化器
编辑子应用 users 目录下的 serializers.py 文件，代码如下：
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
...
from .models import User,Address
class UserAddressSerializer(serializers.ModelSerializer):
"""
用户地址序列化器
"""
province = serializers.StringRelateField(read_only=True)
city = serializers.StringRelateField(read_only=True)
district = serializers.StringRelateField(read_only=True)
province_id = serializers.IntegerField(read_only=True)
city_id = serializers.IntegerField(read_only=True)
district_id = serializers.IntegerField(read_only=True)
class Meta:
model = Address
exclude = ('user', 'is_deleted', 'create_time', 'update_time')
def create(self, validated_data):
"""
新增保存
:param validated_data:
:return:
"""
if not re.match(r'1[3-9]\d{9}', validated_data['mobile']):
raise serializers.ValidationError('手机号格式不正确')
validated_data['user'] = self.context['request'].user
return super().create(validated_data)
class AddressTitleSerializer(serializers.ModelSerializer):
"""
地址标题序列化器
"""
class Meta:
model = Address
fields = ('title',)
|
添加视图集
1.编辑子应用 users 目录下的 views.py 文件，导入 ModelViewSet 类，并继承 ModelViewSet 类，代码如下：
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
...
from rest_framework.viewsets import ModelViewSet
from users.serializers import UserAddressSerializer, AddressTitleSerializer
...
class AddressViewSet(ModelViewSet):
"""
用户地址
"""
serializer_class = UserAddressSerializer
permission_classes = [IsAuthenticated]
def get_queryset(self):
return self.request.user.addresses.filter(is_deleted=False)
def list(self, request, *args, **kwargs):
"""
用户地址列表数据
:param request:
:param args:
:param kwargs:
:return:
"""
queryset = self.get_queryset().filter(user=request.user)
serializer = self.get_serializer(queryset, many=True)
use = serializer.request.user
return Response({
'addresses': serializer.data,
'limit': 20,
'default_address_id': user.default_address_id,
})
def create(self, request, *args, **kwargs):
count = request.user.addresses.count()
if count >= 20:
return Response({'message': '收货地址最多添加20条'}, status=status.HTTP_400_BAD_REQUEST)
return super().create(request, *args, **kwargs)
def destroy(self, request, *args, **kwargs):
"""
处理删除的
:param request:
:param args:
:param kwargs:
:return:
"""
address = self.get_object()
address.is_deleted = True
address.save()
return Response(status=status.HTTP_204_NO_CONTENT)
@action(methods=['put'], detail=True)
def title(self, request, pk=None):
address = self.get_object()
ser =AddressTitleSerializer(instance= address , data= request.data)
ser.is_valid()
ser.save()
return Response(ser.data)
@action(methods=['put'], detail=True)
def status(self,request, pk):
address = self.get_object()
request.user.default_address = address
request.user.save()
return Response({'message': 'OK'}, status=status.HTTP_200_OK)
|
添加访问路由
编辑子应用 users 目录下的 urls.py 文件，代码如下：
1
2
3
4
5
6
7
8
9
10
11
12
13
|
...
from rest_framework.routers import DefaultRouter
...
router = DefaultRouter()
router.register('addresses', views.AddressViewSet, basename='addresses')
urlpatterns += router.urls
|
