我正在使用Django Rest Framework执行get（）和post（）到现有数据库。数据库没有“ id”字段。它具有适用于所有表的复合主键，我无法修改表的架构。带邮递员的get（）可以按预期工作，但是面临post（）的问题。我在三个模型之间嵌套了外键关系。
问题：
1.使用可浏览的API，当我单击UI中提供的链接时，它会引发错误-(1054, "Unknown column 'test_suite.id' in 'field list'") [下面附有跟踪信息]
models.py
class TestSuiteModel(models.Model):
team_name = models.ForeignKey(TeamModel, on_delete=models.DO_NOTHING, db_column='team_name')
template_name = models.ForeignKey(EmailTemplatesModel, on_delete=models.DO_NOTHING, db_column='template_name')
suite_name = models.CharField(max_length=100)
# Other Fields
class Meta:
managed = False
db_table = 'test_suite'
unique_together = (('team_name', 'suite_name'),)
class TestCaseModel(models.Model):
team_name = models.ForeignKey(TestSuiteModel, on_delete=models.DO_NOTHING, db_column='team_name')
suite_name = models.ForeignKey(TestSuiteModel, on_delete=models.DO_NOTHING, db_column='suite_name')
test_type = models.ForeignKey(TestCaseTypeModel, on_delete=models.DO_NOTHING)
# Other Fields
class Meta:
managed = False
db_table = 'test_case'
unique_together = (('team_name', 'suite_name', 'case_name'),)
class TeamModel(models.Model):
team_name = models.CharField(primary_key=True, max_length=30)
description = models.CharField(max_length=100, blank=True, null=True)
class Meta:
managed = False
db_table = 'team'
class TestCaseTypeModel(models.Model):
id = models.IntegerField(primary_key=True)
name = models.CharField(max_length=100)
description = models.CharField(max_length=200, blank=True, null=True)
class Meta:
managed = False
db_table = 'test_case_type'
serializers.py
class TestCaseSerializer(serializers.ModelSerializer):
logger.info(" inside TestCaseSerializer " )
class Meta:
model = models.TestCaseModel
fields = ['team_name', 'suite_name', 'case_name', 'description', 'run_level', 'stop_on_failure', 'test_type_id']
def to_representation(self, obj):
if isinstance(obj, dict): # get methods
return obj
else:
self.fields['team_name'] = TestSuiteSerializer()
self.fields['suite_name'] = TestSuiteSerializer()
self.fields['test_type_id'] = TestCaseTypeSerializer()
return super(TestCaseSerializer, self).to_representation(obj)
class TestSuiteSerializer(serializers.ModelSerializer):
class Meta:
model = models.TestSuiteModel
fields = ['team_name','suite_name', 'description','schedule','email_list_ok','email_list_fail','template_name']
def to_representation(self, obj):
if isinstance(obj, dict):
return obj
else:
self.fields['team_name'] = TeamSerializer()
self.fields['template_name'] = EmailTemplatesSerializer()
return super(TestSuiteSerializer, self).to_representation(obj)
class TeamSerializer(serializers.ModelSerializer):
class Meta:
model = models.TeamModel
fields = '__all__'
views.py
class TestCaseViewSet(viewsets.ModelViewSet):
queryset = models.TestCaseModel.objects.values('team_name', 'suite_name', 'case_name', 'description', 'run_level', 'stop_on_failure', 'test_type_id')
serializer_class = serializers.TestCaseSerializer
class TestSuiteViewSet(viewsets.ModelViewSet):
queryset = models.TestSuiteModel.objects.values('team_name','suite_name', 'description','schedule','email_list_ok','email_list_fail','template_name')
serializer_class = serializers.TestSuiteSerializer(queryset)
class TeamViewSet(viewsets.ModelViewSet):
queryset = models.TeamModel.objects.all()
serializer_class = serializers.TeamSerializer
urls.py
router = routers.DefaultRouter()
router.register(r'teams', views.TeamViewSet)
router.register(r'test_suites', views.TestSuiteViewSet)
router.register(r'test_cases', views.TestCaseViewSet)
urlpatterns = [
url(r'^dqf_api/', include(router.urls)),
]
当我单击api链接时，[问题1] UI错误回溯
File "/usr/local/lib/python3.6/dist-packages/django/db/backends/utils.py" in _execute
85. return self.cursor.execute(sql, params)
File "/usr/local/lib/python3.6/dist-packages/django/db/backends/mysql/base.py" in execute
71. return self.cursor.execute(query, args)
File "/usr/local/lib/python3.6/dist-packages/MySQLdb/cursors.py" in execute
206. res = self._query(query)
File "/usr/local/lib/python3.6/dist-packages/MySQLdb/cursors.py" in _query
312. db.query(q)
File "/usr/local/lib/python3.6/dist-packages/MySQLdb/connections.py" in query
224. _mysql.connection.query(self, query)
The above exception ((1054, "Unknown column 'test_suite.id' in 'field list'")) was the direct cause of the following exception:
File "/usr/local/lib/python3.6/dist-packages/django/core/handlers/exception.py" in inner
35. response = get_response(request)
File "/usr/local/lib/python3.6/dist-packages/django/core/handlers/base.py" in _get_response
158. response = self.process_exception_by_middleware(e, request)
File "/usr/local/lib/python3.6/dist-packages/django/core/handlers/base.py" in _get_response
156. response = response.render()
File "/usr/local/lib/python3.6/dist-packages/django/template/response.py" in render
106. self.content = self.rendered_content
File "/usr/local/lib/python3.6/dist-packages/rest_framework/response.py" in rendered_content
72. ret = renderer.render(self.data, accepted_media_type, context)
File "/usr/local/lib/python3.6/dist-packages/rest_framework/renderers.py" in render
733. context = self.get_context(data, accepted_media_type, renderer_context)
File "/usr/local/lib/python3.6/dist-packages/rest_framework/renderers.py" in get_context
704. 'post_form': self.get_rendered_html_form(data, view, 'POST', request),
File "/usr/local/lib/python3.6/dist-packages/rest_framework/renderers.py" in get_rendered_html_form
522. return self.render_form_for_serializer(serializer)
File "/usr/local/lib/python3.6/dist-packages/rest_framework/renderers.py" in render_form_for_serializer
532. {'style': {'template_pack': 'rest_framework/horizontal'}}
File "/usr/local/lib/python3.6/dist-packages/rest_framework/renderers.py" in render
383. return template.render(context)
File "/usr/local/lib/python3.6/dist-packages/django/template/backends/django.py" in render
61. return self.template.render(context)
File "/usr/local/lib/python3.6/dist-packages/django/template/base.py" in render
175. return self._render(context)
File "/usr/local/lib/python3.6/dist-packages/django/template/base.py" in _render
167. return self.nodelist.render(context)
File "/usr/local/lib/python3.6/dist-packages/django/template/base.py" in render
943. bit = node.render_annotated(context)
File "/usr/local/lib/python3.6/dist-packages/django/template/base.py" in render_annotated
910. return self.render(context)
File "/usr/local/lib/python3.6/dist-packages/django/template/defaulttags.py" in render
211. nodelist.append(node.render_annotated(context))
File "/usr/local/lib/python3.6/dist-packages/django/template/base.py" in render_annotated
910. return self.render(context)
File "/usr/local/lib/python3.6/dist-packages/django/template/defaulttags.py" in render
314. return nodelist.render(context)
File "/usr/local/lib/python3.6/dist-packages/django/template/base.py" in render
943. bit = node.render_annotated(context)
File "/usr/local/lib/python3.6/dist-packages/django/template/base.py" in render_annotated
910. return self.render(context)
File "/usr/local/lib/python3.6/dist-packages/django/template/library.py" in render
192. output = self.func(*resolved_args, **resolved_kwargs)
File "/usr/local/lib/python3.6/dist-packages/rest_framework/templatetags/rest_framework.py" in render_field
90. return renderer.render_field(field, style)
File "/usr/local/lib/python3.6/dist-packages/rest_framework/renderers.py" in render_field
362. return template.render(context)
File "/usr/local/lib/python3.6/dist-packages/django/template/backends/django.py" in render
61. return self.template.render(context)
File "/usr/local/lib/python3.6/dist-packages/django/template/base.py" in render
175. return self._render(context)
File "/usr/local/lib/python3.6/dist-packages/django/template/base.py" in _render
167. return self.nodelist.render(context)
File "/usr/local/lib/python3.6/dist-packages/django/template/base.py" in render
943. bit = node.render_annotated(context)
File "/usr/local/lib/python3.6/dist-packages/django/template/base.py" in render_annotated
910. return self.render(context)
File "/usr/local/lib/python3.6/dist-packages/django/template/defaulttags.py" in render
161. values = self.sequence.resolve(context, True)
File "/usr/local/lib/python3.6/dist-packages/django/template/base.py" in resolve
676. obj = self.var.resolve(context)
File "/usr/local/lib/python3.6/dist-packages/django/template/base.py" in resolve
802. value = self._resolve_lookup(context)
File "/usr/local/lib/python3.6/dist-packages/django/template/base.py" in _resolve_lookup
864. current = current()
File "/usr/local/lib/python3.6/dist-packages/rest_framework/relations.py" in iter_options
222. self.get_choices(cutoff=self.html_cutoff),
File "/usr/local/lib/python3.6/dist-packages/rest_framework/relations.py" in get_choices
209. for item in queryset
File "/usr/local/lib/python3.6/dist-packages/django/db/models/query.py" in __iter__
272. self._fetch_all()
File "/usr/local/lib/python3.6/dist-packages/django/db/models/query.py" in _fetch_all
1179. self._result_cache = list(self._iterable_class(self))
File "/usr/local/lib/python3.6/dist-packages/django/db/models/query.py" in __iter__
54. results = compiler.execute_sql(chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size)
File "/usr/local/lib/python3.6/dist-packages/django/db/models/sql/compiler.py" in execute_sql
1064. cursor.execute(sql, params)
File "/usr/local/lib/python3.6/dist-packages/django/db/backends/utils.py" in execute
100. return super().execute(sql, params)
File "/usr/local/lib/python3.6/dist-packages/django/db/backends/utils.py" in execute
68. return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
File "/usr/local/lib/python3.6/dist-packages/django/db/backends/utils.py" in _execute_with_wrappers
77. return executor(sql, params, many, context)
File "/usr/local/lib/python3.6/dist-packages/django/db/backends/utils.py" in _execute
85. return self.cursor.execute(sql, params)
File "/usr/local/lib/python3.6/dist-packages/django/db/utils.py" in __exit__
89. raise dj_exc_value.with_traceback(traceback) from exc_value
File "/usr/local/lib/python3.6/dist-packages/django/db/backends/utils.py" in _execute
85. return self.cursor.execute(sql, params)
File "/usr/local/lib/python3.6/dist-packages/django/db/backends/mysql/base.py" in execute
71. return self.cursor.execute(query, args)
File "/usr/local/lib/python3.6/dist-packages/MySQLdb/cursors.py" in execute
206. res = self._query(query)
File "/usr/local/lib/python3.6/dist-packages/MySQLdb/cursors.py" in _query
312. db.query(q)
File "/usr/local/lib/python3.6/dist-packages/MySQLdb/connections.py" in query
224. _mysql.connection.query(self, query)
Exception Type: OperationalError at /dqf_api/test_cases/
Exception Value: (1054, "Unknown column 'test_suite.id' in 'field list'")
[问题2] postman（）中的post（）错误
有效载荷：
{
"team_name":"ede",
"suite_name": "dummy",
"case_name": "ede case",
"description": "",
"run_level": 1,
"stop_on_failure": false,
"test_type_id": 1
}
错误：
{
"team_name": [
"Incorrect type. Expected pk value, received str."
],
"suite_name": [
"Incorrect type. Expected pk value, received str."
]
}
我们非常感谢您的帮助。我是使用Django和DRF的新手