我正在与Django 1.10.5合作，我收到错误消息，我找不到解决方案。除了表BirthCertificate（见上文）之外，所有模型似乎都能正常运行并且所有表格都是正确的。
我的第一个应用程序中有一个模型文件： Identity models.py
#-*- coding: utf-8 -*-
class Identity(models.Model):
title = models.CharField(max_length=12,choices=TITLE_CHOICES, verbose_name='Civilité')
lastname = models.CharField(max_length=30, verbose_name='Nom de famille')
firstname = models.CharField(max_length=30, verbose_name='Prénom(s)')
sex = models.CharField(max_length=8, choices=SEX_CHOICES, verbose_name='Sexe')
birthday = models.DateField(verbose_name='Date de naissance')
birthcity = models.CharField(max_length=30, verbose_name='Ville de naissance')
birthcountry = CountryField(blank_label='Sélectionner un pays', verbose_name='Pays de naissance')
nationality = models.CharField(max_length=30, verbose_name='Nationalité')
job = models.CharField(max_length=30, verbose_name='Profession')
adress = models.CharField(max_length=30, verbose_name='Adresse')
city = models.CharField(max_length=30, verbose_name='Ville')
zip = models.IntegerField(verbose_name='Code Postal')
country = CountryField(blank_label='Sélectionner un pays', verbose_name='Pays')
mail = models.CharField(max_length=30, verbose_name='Email', blank=True)
phone = models.CharField(max_length=20, verbose_name='Téléphone', blank=True)
def __unicode__(self):
return '%s %s %s %s %s %s %s %s %s %s %s %s %s %s %s %s' % (self.id, self.title, self.lastname, self.firstname, self.sex, self.birthday, self.birthcity, self.birthcountry,
self.nationality, self.job, self.adress, self.city, self.zip, self.country, self.mail, self.phone)
然后我的第二个应用程序中有另一个模型： BirthCertificate models.py ，它从身份模型中获取两个外键：
#-*- coding: utf-8 -*-
class BirthCertificate(models.Model):
lastname = models.CharField(max_length=30, null=False, verbose_name='Nom de famille')
firstname = models.CharField(max_length=30, null=False, verbose_name='Prénom(s)')
sex = models.CharField(max_length=8, choices=SEX_CHOICES, verbose_name='Sexe')
birthday = models.DateField(null=False, verbose_name='Date de naissance')
birthhour = models.TimeField(null=True, verbose_name='Heure de naissance')
birthcity = models.CharField(max_length=30, null=False, verbose_name='Ville de naissance')
birthcountry = CountryField(blank_label='Sélectionner un pays', verbose_name='Pays de naissance')
fk_parent1 = models.ForeignKey(Identity, related_name='ID_Parent1', verbose_name='ID parent1', null=False)
fk_parent2 = models.ForeignKey(Identity, related_name='ID_Parent2', verbose_name='ID parent2', null=False)
folderId = models.CharField(max_length=15, null=True)
然后，我在BirthCertificate应用程序中有一个表格，我填写。我可以在此表单中选择一些身份ID。但是，当我填写并验证我的表单时，我收到此错误：
Exception Value: (1048, "Column 'fk_parent1_id' cannot be null")
但是，此列不为空，因为我在选择列表中选择了一个人物：
我也使用表单函数输入 BirthCertificate views.py 文件：
import requests, os, json, glob
from django.shortcuts import render, reverse, get_object_or_404
from django.contrib.auth.decorators import login_required
from django.http import HttpResponseRedirect, HttpResponse
from .models import BirthCertificate
from Identity.models import Identity
from .forms import BirthCertificateForm
from django.db import connection
from django.template import Context
from django.template.loader import get_template
from xhtml2pdf import pisa
@login_required
def BirthCertificate_Form(request) :
# Fonction permettant de créer le formulaire Acte de Naissance et le remplissage
if request.method == 'POST':
Bform = BirthCertificateForm(request.POST or None)
if Bform.is_valid() : # Vérification sur la validité des données
if '_preview2' in request.POST :
post = Bform.save(commit=False)
template_name = 'BC_preview.html'
elif '_save2' in request.POST :
post = Bform.save()
return HttpResponseRedirect(reverse('BC_treated', kwargs={'id': post.id}))
else:
Bform = BirthCertificateForm()
return render(request, 'BC_form.html', {"Bform" : Bform})
你有解决方案吗？ 如果您需要某些文件或视图，请告诉我，因为我花了2天没有找到解决问题的方法。
编辑完全跟踪
Environment:
Request Method: POST
Request URL: http://localhost:8000/BirthCertificate/formulaire
Django Version: 1.10.5
Python Version: 2.7.12
Installed Applications:
['django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'BirthCertificate',
'Identity',
'bootstrapform',
'Accueil',
'captcha',
'django_countries',
'log',
'Mairie']
Installed Middleware:
['django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.locale.LocaleMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.middleware.gzip.GZipMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
'django.middleware.security.SecurityMiddleware']
Traceback:
File "/usr/local/lib/python2.7/site-packages/django/core/handlers/exception.py" in inner
39. response = get_response(request)
File "/usr/local/lib/python2.7/site-packages/django/core/handlers/base.py" in _legacy_get_response
249. response = self._get_response(request)
File "/usr/local/lib/python2.7/site-packages/django/core/handlers/base.py" in _get_response
187. response = self.process_exception_by_middleware(e, request)
File "/usr/local/lib/python2.7/site-packages/django/core/handlers/base.py" in _get_response
185. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/usr/local/lib/python2.7/site-packages/django/contrib/auth/decorators.py" in _wrapped_view
23. return view_func(request, *args, **kwargs)
File "/Users/valentinjungbluth/Desktop/Django/Etat_civil/BirthCertificate/views.py" in BirthCertificate_Form
47. post = Bform.save()
File "/usr/local/lib/python2.7/site-packages/django/forms/models.py" in save
453. self.instance.save()
File "/usr/local/lib/python2.7/site-packages/django/db/models/base.py" in save
796. force_update=force_update, update_fields=update_fields)
File "/usr/local/lib/python2.7/site-packages/django/db/models/base.py" in save_base
824. updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)
File "/usr/local/lib/python2.7/site-packages/django/db/models/base.py" in _save_table
908. result = self._do_insert(cls._base_manager, using, fields, update_pk, raw)
File "/usr/local/lib/python2.7/site-packages/django/db/models/base.py" in _do_insert
947. using=using, raw=raw)
File "/usr/local/lib/python2.7/site-packages/django/db/models/manager.py" in manager_method
85. return getattr(self.get_queryset(), name)(*args, **kwargs)
File "/usr/local/lib/python2.7/site-packages/django/db/models/query.py" in _insert
1045. return query.get_compiler(using=using).execute_sql(return_id)
File "/usr/local/lib/python2.7/site-packages/django/db/models/sql/compiler.py" in execute_sql
1054. cursor.execute(sql, params)
File "/usr/local/lib/python2.7/site-packages/django/db/backends/utils.py" in execute
79. return super(CursorDebugWrapper, self).execute(sql, params)
File "/usr/local/lib/python2.7/site-packages/django/db/backends/utils.py" in execute
64. return self.cursor.execute(sql, params)
File "/usr/local/lib/python2.7/site-packages/django/db/backends/mysql/base.py" in execute
115. six.reraise(utils.IntegrityError, utils.IntegrityError(*tuple(e.args)), sys.exc_info()[2])
File "/usr/local/lib/python2.7/site-packages/django/db/backends/mysql/base.py" in execute
110. return self.cursor.execute(query, args)
File "/Library/Python/2.7/site-packages/MySQLdb/cursors.py" in execute
205. self.errorhandler(self, exc, value)
File "/Library/Python/2.7/site-packages/MySQLdb/connections.py" in defaulterrorhandler
36. raise errorclass, errorvalue
Exception Type: IntegrityError at /BirthCertificate/formulaire
Exception Value: (1048, "Column 'fk_parent1_id' cannot be null")