我正在开发一个 Django 应用程序,它从 API 获取 JSON 数据并将其存储在 PostgreSQL 数据库中。但是在迁移应用程序时出现此错误:
KeyError: 'locations'
这是回溯:
Traceback (most recent call last):
File "manage.py", line 22, in <module>
execute_from_command_line(sys.argv)
File "/python/lib/python3.6/site-packages/django/core/management/__init__.py", line 363, in execute_from_command_line
utility.execute()
File "/python/lib/python3.6/site-packages/django/core/management/__init__.py", line 355, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/python/lib/python3.6/site-packages/django/core/management/base.py", line 283, in run_from_argv
self.execute(*args, **cmd_options)
File "/python/lib/python3.6/site-packages/django/core/management/base.py", line 330, in execute
output = self.handle(*args, **options)
File "/app/aggregator/WorldBank/management/commands/fetch_wb.py", line 23, in handle
locations = data['locations'],
KeyError: 'locations'
如何解决这个问题?
这是我的 models.py 代码:
from django.db import models
from django.contrib.postgres.fields import JSONField
class Projects(models.Model):
data = JSONField(null=True)
project_id=models.CharField(max_length=255)
project_name=models.CharField(max_length=255)
status=models.CharField(max_length=255)
country=models.CharField(max_length=255)
locations=JSONField()
mjtheme=models.CharField(max_length=255)
project_docs=JSONField()
source=models.CharField(max_length=255)
mjtheme_namecode=models.CharField(max_length=255)
docty=models.TextField()
countryname=models.CharField(max_length=255)
countrycode=models.CharField(max_length=255)
themecode=models.CharField(max_length=255)
theme_namecode=models.CharField(max_length=255)
project_url=models.TextField()
totalcommamt=models.CharField(max_length=255)
mjthemecode=models.CharField(max_length=255)
sector1=models.CharField(max_length=255)
theme1=models.CharField(max_length=255)
theme2=models.CharField(max_length=255)
theme3=models.CharField(max_length=255)
projectinfo=models.TextField()
country_namecode=models.CharField(max_length=255)
p2a_updated_date=models.CharField(max_length=255)
p2a_flag=models.CharField(max_length=255)
project_abstract=JSONField()
这是存储在/management/commands/fetch.py 下的 fetch.py 文件的代码:
import requests
from django.core.management.base import BaseCommand
from aggregator.WorldBank.models import Projects
class Command(BaseCommand):
def handle(self, **options):
response = requests.get("https://search.worldbank.org/api/v2/projects?format=json&countryshortname_exact=India&source=IBRD&kw=N&rows=776")
data = response.json()
projects = data['projects']
for project in projects:
print(projects[project])
print("\n\n")
data = projects[project]
Projects.objects.create(
project_id = data['id'],
project_name = data['project_name'],
status = data['status'],
country = data['countryshortname'],
locations = data['locations'],
mjtheme = data['mjtheme'],
project_docs = data['projectdocs'],
source = data['source'],
mjtheme_namecode = data['mjtheme_namecode'],
docty = data['docty'],
countryname = data['countryname'],
countrycode = data['countrycode'],
themecode = data['themecode'],
theme_namecode = data['theme_namecode'],
project_url = data['url'],
totalcommamt = data['totalcommamt'],
mjthemecode = data['mjthemecode'],
sector1 = data['sector1'],
theme1 = data['theme1'],
theme2 = data['theme2'],
theme3 = data['theme3'],
projectinfo = data['projectinfo'],
country_namecode = ['country_namecode'],
p2a_updated_date = data['p2a_updated_date'],
p2a_flag = data['p2a_flag'],
project_abstract = data['project_abstract']
)
这是我想将 JSON 响应存储到 postgres 数据库中的 API URL: API URL
我如何有效地定义 models.py,以便将此 JSON 响应中的所有字段存储到数据库中?
最佳答案
你的麻烦在于重新声明 data
试一试:
def handle(self, **options):
response = requests.get("https://search.worldbank.org/api/v2/projects?format=json&countryshortname_exact=India&source=IBRD&kw=N&rows=776")
data = response.json()
projects = data.get('projects')
for pdata in projects.values():
pdata['project_id'] = pdata.pop('id', None)
pdata['country'] = pdata.pop('countryshortname', None)
# other columns need to be ranamed
Projects.objects.create(**pdata)
关于python - key 错误 : 'locations' in Django app,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/47364215/