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编辑：我改变了标题，以更好地代表我寻求的解决方案。如何将命名参数传递给另一个函数需要的函数？
我正在重复一段代码，并且想写一个函数来减少混乱。我无法通过kwarg密钥hourly_id（原始代码的最后一行）。
原始代码
# Create Hourly data.
hourly_data = validated_data.pop('hourly')
hourly_points_data = hourly_data.pop('data')
hourly = Hourly.objects.create(**hourly_data)
for hourly_point_data in hourly_points_data:
hourly_point = HourlyPoint.objects.create(
hourly_id=hourly.pk, **hourly_point_data) <-- This
新功能
def create_data_block(self, data, block_str, DataBlock, DataPoint, id):
block_data = data.pop(block_str)
points_data = block_data.pop('data')
block = DataBlock.objects.create(**block_data)
for point_data in points_data:
point = DataPoint.objects.create(
id=block.pk, **point_data) <-- This
函数调用
self.create_data_block(validated_data, 'hourly', Hourly, HourlyPoint, 'hourly_id')
所以你可以看到在这里我试图通过hourly_id作为id使用字符串，但我得到一个数据库错误，说hourly_id丢失，所以我显然没有正确传递它。
回溯
Traceback (most recent call last):
File "/home/cudb/.virtualenvs/otto/lib/python3.5/site-packages/django/core/handlers/exception.py", line 42, in inner
response = get_response(request)
File "/home/cudb/.virtualenvs/otto/lib/python3.5/site-packages/django/core/handlers/base.py", line 187, in _get_response
response = self.process_exception_by_middleware(e, request)
File "/home/cudb/.virtualenvs/otto/lib/python3.5/site-packages/django/core/handlers/base.py", line 185, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/usr/lib/python3.5/contextlib.py", line 30, in inner
return func(*args, **kwds)
File "/home/cudb/.virtualenvs/otto/lib/python3.5/site-packages/django/views/decorators/csrf.py", line 58, in wrapped_view
return view_func(*args, **kwargs)
File "/home/cudb/.virtualenvs/otto/lib/python3.5/site-packages/django/views/generic/base.py", line 68, in view
return self.dispatch(request, *args, **kwargs)
File "/home/cudb/.virtualenvs/otto/lib/python3.5/site-packages/rest_framework/views.py", line 489, in dispatch
response = self.handle_exception(exc)
File "/home/cudb/.virtualenvs/otto/lib/python3.5/site-packages/rest_framework/views.py", line 449, in handle_exception
self.raise_uncaught_exception(exc)
File "/home/cudb/.virtualenvs/otto/lib/python3.5/site-packages/rest_framework/views.py", line 486, in dispatch
response = handler(request, *args, **kwargs)
File "/home/cudb/Projects/a/b/c/weather/views.py", line 36, in get
response = self.get_entry(latitude, longitude)
File "/home/cudb/Projects/a/b/c/weather/views.py", line 59, in get_entry
response = self.create_or_update_entry(latitude, longitude)
File "/home/cudb/Projects/a/b/c/weather/views.py", line 76, in create_or_update_entry
location_serializer.save()
File "/home/cudb/.virtualenvs/otto/lib/python3.5/site-packages/rest_framework/serializers.py", line 215, in save
self.instance = self.create(validated_data)
File "/home/cudb/Projects/a/b/c/weather/serializers.py", line 119, in create
validated_data, 'hourly', Hourly, HourlyPoint, 'hourly_id')
File "/home/cudb/Projects/a/b/c/weather/serializers.py", line 169, in create_data_block
id=block.pk, **point_data)
File "/home/cudb/.virtualenvs/otto/lib/python3.5/site-packages/django/db/models/manager.py", line 85, in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
File "/home/cudb/.virtualenvs/otto/lib/python3.5/site-packages/django/db/models/query.py", line 399, in create
obj.save(force_insert=True, using=self.db)
File "/home/cudb/.virtualenvs/otto/lib/python3.5/site-packages/django/db/models/base.py", line 796, in save
force_update=force_update, update_fields=update_fields)
File "/home/cudb/.virtualenvs/otto/lib/python3.5/site-packages/django/db/models/base.py", line 824, in save_base
updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)
File "/home/cudb/.virtualenvs/otto/lib/python3.5/site-packages/django/db/models/base.py", line 908, in _save_table
result = self._do_insert(cls._base_manager, using, fields, update_pk, raw)
File "/home/cudb/.virtualenvs/otto/lib/python3.5/site-packages/django/db/models/base.py", line 947, in _do_insert
using=using, raw=raw)
File "/home/cudb/.virtualenvs/otto/lib/python3.5/site-packages/django/db/models/manager.py", line 85, in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
File "/home/cudb/.virtualenvs/otto/lib/python3.5/site-packages/django/db/models/query.py", line 1045, in _insert
return query.get_compiler(using=using).execute_sql(return_id)
File "/home/cudb/.virtualenvs/otto/lib/python3.5/site-packages/django/db/models/sql/compiler.py", line 1054, in execute_sql
cursor.execute(sql, params)
File "/home/cudb/.virtualenvs/otto/lib/python3.5/site-packages/debug_toolbar/panels/sql/tracking.py", line 164, in execute
return self._record(self.cursor.execute, sql, params)
File "/home/cudb/.virtualenvs/otto/lib/python3.5/site-packages/debug_toolbar/panels/sql/tracking.py", line 106, in _record
return method(sql, params)
File "/home/cudb/.virtualenvs/otto/lib/python3.5/site-packages/django/db/backends/utils.py", line 79, in execute
return super(CursorDebugWrapper, self).execute(sql, params)
File "/home/cudb/.virtualenvs/otto/lib/python3.5/site-packages/django/db/backends/utils.py", line 64, in execute
return self.cursor.execute(sql, params)
File "/home/cudb/.virtualenvs/otto/lib/python3.5/site-packages/django/db/utils.py", line 94, in __exit__
six.reraise(dj_exc_type, dj_exc_value, traceback)
File "/home/cudb/.virtualenvs/otto/lib/python3.5/site-packages/django/utils/six.py", line 685, in reraise
raise value.with_traceback(tb)
File "/home/cudb/.virtualenvs/otto/lib/python3.5/site-packages/django/db/backends/utils.py", line 64, in execute
return self.cursor.execute(sql, params)
django.db.utils.IntegrityError: null value in column "hourly_id" violates not-null constraint
DETAIL: Failing row contains (6, 76.22, 77.31, 0.80, 0.00, clear-night, Clear, null).
[04/Aug/2017 12:05:30] "GET /weather/0,4 HTTP/1.1" 500 288106
包括你的全栈跟踪。另外，键只是字符串。 – Marcin
我附上了痕迹。 – CudB
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