标签：ida 描述 red div max gre ace validator name
表结构：
projects：项目表
interfaces：接口表，关联项目表的主键ID，在接口表中的字段为：project_id
创建接口序列化器时，关联字段project的创建可以分为以下几种情况：
1、默认为：PrimaryKeyRelatedField
from rest_framework import serializers from .models import Interfaces class InterfacesModelSerializer(serializers.ModelSerializer): # 默认情况是PrimaryKeyRelatedField class Meta: model = Interfaces fields = "__all__"
打开ipython：python manage.py shell -i ipython
可以看到序列化后的结果为：project的值为projects表的主键ID
In [1]: from interfaces.serializers import InterfacesModelSerializer In [2]: InterfacesModelSerializer() Out[2]:
InterfacesModelSerializer(): id = IntegerField(label=‘ID‘, read_only=True) name = CharField(help_text=‘接口名称‘, label=‘接口名称‘, max_length=50, validators=[<UniqueValidator(queryset=Interfaces.objects.all())>]) tester = CharField(help_text=‘测试人员‘, label=‘测试人员‘, max_length=10) desc = CharField(allow_blank=True, allow_null=True, help_text=‘接口描述‘, label=‘接口描述‘, required=False, style={‘base_template‘: ‘textarea .html‘}) project = PrimaryKeyRelatedField(help_text=‘所属项目‘, label=‘所属项目‘, queryset=Projects.objects.all()) In [3]: from interfaces.models import Interfaces In [4]: one_data = Interfaces.objects.get(id=1) In [5]: InterfacesModelSerializer(one_data).data Out[5]: {‘id‘: 1, ‘name‘: ‘登录‘, ‘tester‘: ‘小李‘, ‘desc‘: ‘登录接口‘, ‘project‘: 1}
2、使用StringRelatedField，代码为：
from rest_framework import serializers from .models import Interfaces class InterfacesModelSerializer(serializers.ModelSerializer): project = serializers.StringRelatedField(label="所属项目") class Meta: model = Interfaces fields = "__all__"
打开ipython：python manage.py shell -i ipython
可以看到序列化后的结果为：project的值为projects表的name
In [1]: from interfaces.serializers import InterfacesModelSerializer In [2]: from interfaces.models import Interfaces In [3]: InterfacesModelSerializer() Out[3]: InterfacesModelSerializer(): id = IntegerField(label=‘ID‘, read_only=True) project = StringRelatedField(label=‘所属项目‘) name = CharField(help_text=‘接口名称‘, label=‘接口名称‘, max_length=50, validators=[<UniqueValidator(queryset=Interfaces.objects.all())>]) tester = CharField(help_text=‘测试人员‘, label=‘测试人员‘, max_length=10) desc = CharField(allow_blank=True, allow_null=True, help_text=‘接口描述‘, label=‘接口描述‘, required=False, style={‘base_template‘: ‘textarea .html‘}) In [4]: one_data = Interfaces.objects.get(id=1) In [5]: InterfacesModelSerializer(one_data).data Out[5]: {‘id‘: 1, ‘project‘: ‘电子胶片项目‘, ‘name‘: ‘登录‘, ‘tester‘: ‘小李‘, ‘desc‘: ‘登录接口‘}
3、使用SlugRelatedField：
from rest_framework import serializers from .models import Interfaces from projects.models import Projects class InterfacesModelSerializer(serializers.ModelSerializer): # project = serializers.SlugRelatedField(slug_field=‘tester‘, queryset=Projects.objects.all()) # 或者 project = serializers.SlugRelatedField(slug_field=‘tester‘, read_only=True) class Meta: model = Interfaces fields = "__all__"
打开ipython：python manage.py shell -i ipython
可以看到序列化后的结果为：project的值为projects表的指定的字段值(tester)
In [1]: from interfaces.serializers import InterfacesModelSerializer In [2]: from interfaces.models import Interfaces In [3]: InterfacesModelSerializer() Out[3]: InterfacesModelSerializer(): id = IntegerField(label=‘ID‘, read_only=True) project = SlugRelatedField(read_only=True, slug_field=‘tester‘) name = CharField(help_text=‘接口名称‘, label=‘接口名称‘, max_length=50, validators=[<UniqueValidator(queryset=Interfaces.objects.all())>]) tester = CharField(help_text=‘测试人员‘, label=‘测试人员‘, max_length=10) desc = CharField(allow_blank=True, allow_null=True, help_text=‘接口描述‘, label=‘接口描述‘, required=False, style={‘base_template‘: ‘textarea .html‘}) In [4]: one_data = Interfaces.objects.get(id=1) In [5]: InterfacesModelSerializer(one_data).data Out[5]: {‘id‘: 1, ‘project‘: ‘奔奔‘, ‘name‘: ‘登录‘, ‘tester‘: ‘小李‘, ‘desc‘: ‘登录接口‘}
4、使用关联对象的序列化器：
from rest_framework import serializers from .models import Interfaces from projects.serializers import ProjectsModelSerializer class InterfacesModelSerializer(serializers.ModelSerializer): project = ProjectsModelSerializer(label="所属项目", read_only=True) class Meta: model = Interfaces fields = "__all__"
打开ipython：python manage.py shell -i ipython
可以看到序列化后的结果为：
In [1]: from interfaces.models import Interfaces In [2]: from interfaces.serializers import InterfacesModelSerializer In [3]: InterfacesModelSerializer() Out[3]: InterfacesModelSerializer(): id = IntegerField(label=‘ID‘, read_only=True) project = ProjectsModelSerializer(label=‘所属项目‘, read_only=True): id = IntegerField(label=‘ID‘, read_only=True) name = CharField(error_messages={‘max_length‘: ‘最长只能输入50个字符‘}, help_text=‘项目名称‘, label=‘项目名称‘, max_length=200, validator s=[<UniqueValidator(queryset=<QuerySet [<Projects: 电子胶片项目>]>)>, <function is_unique_project_name>]) leader = CharField(help_text=‘负责人‘, label=‘负责人‘, max_length=50) tester = CharField(help_text=‘测试人员‘, label=‘测试人员‘, max_length=50) programer = CharField(help_text=‘开发人员‘, label=‘开发人员‘, max_length=50) publish_app = CharField(help_text=‘发布应用‘, label=‘发布应用‘, max_length=100) desc = CharField(allow_blank=True, allow_null=True, help_text=‘简要描述‘, label=‘简要描述‘, required=False, style={‘base_template‘: ‘text area.html‘}) name = CharField(help_text=‘接口名称‘, label=‘接口名称‘, max_length=50, validators=[<UniqueValidator(queryset=Interfaces.objects.all())>]) tester = CharField(help_text=‘测试人员‘, label=‘测试人员‘, max_length=10) desc = CharField(allow_blank=True, allow_null=True, help_text=‘接口描述‘, label=‘接口描述‘, required=False, style={‘base_template‘: ‘textarea .html‘}) In [4]: one_data = Interfaces.objects.get(id=1) In [5]: InterfacesModelSerializer(one_data).data Out[5]: {‘id‘: 1, ‘project‘: OrderedDict([(‘id‘, 1), (‘name‘, ‘电子胶片项目‘), (‘leader‘, ‘小雨‘), (‘tester‘, ‘奔奔‘), (‘programer‘, ‘小安‘), (‘p ublish_app‘, ‘微信公众号‘), (‘desc‘, ‘实时获取影像和检查报告‘)]), ‘name‘: ‘登录‘, ‘tester‘: ‘小李‘, ‘desc‘: ‘登录接口‘}
5、在主表的序列化模型类中加上从表的模型类名小写_set，可以获取从表中的信息：
class ProjectsModelSerializer(serializers.ModelSerializer): # 父表中默认不会生成关联字段(从表字段), 可以手动指定, 字段名默认为 子表模型类名小写_set interfaces_set = serializers.StringRelatedField(many=True)
运行结果：
In [1]: from projects.models import Projects In [2]: from projects.serializers import ProjectsModelSerializer In [3]: ProjectsModelSerializer() Out[3]: ProjectsModelSerializer(): id = IntegerField(label=‘ID‘, read_only=True) interfaces_set = StringRelatedField(many=True) name = CharField(error_messages={‘max_length‘: ‘最长只能输入50个字符‘}, help_text=‘项目名称‘, label=‘项目名称‘, max_length=200, validators=[< UniqueValidator(queryset=<QuerySet [<Projects: 电子胶片项目>]>)>, <function is_unique_project_name>]) leader = CharField(help_text=‘负责人‘, label=‘负责人‘, max_length=50) tester = CharField(help_text=‘测试人员‘, label=‘测试人员‘, max_length=50) programer = CharField(help_text=‘开发人员‘, label=‘开发人员‘, max_length=50) publish_app = CharField(help_text=‘发布应用‘, label=‘发布应用‘, max_length=100) desc = CharField(allow_blank=True, allow_null=True, help_text=‘简要描述‘, label=‘简要描述‘, required=False, style={‘base_template‘: ‘textarea .html‘}) In [4]: one_data = Projects.objects.get(id=1) In [5]: ProjectsModelSerializer(one_data).data Out[5]: {‘id‘: 1, ‘interfaces_set‘: [‘登录‘], ‘name‘: ‘电子胶片项目‘, ‘leader‘: ‘小雨‘, ‘tester‘: ‘奔奔‘, ‘programer‘: ‘小安‘, ‘publish_app‘: ‘微 信公众号‘, ‘desc‘: ‘实时获取影像和检查报告‘}
django框架学习五：djangorestframework中ModelSerializer的关联字段的生成
标签：ida 描述 red div max gre ace validator name
原文地址：https://www.cnblogs.com/benben-wu/p/12494354.html
