大家好我在尝试在数据库中保存表单的日期时遇到问题:
django.db.utils.OperationalError:表app_avaliacao没有列 名为nota
是的,我运行 manage.py makemigrations 和 manage.py migrate ,我尝试删除文件夹迁移并运行命令一次再次,但错误继续......
所以,这里有我的代码:
models.py:
from django.db import models
from jsonfield import JSONField
from site_.settings import MEDIA_ROOT
from django.core.validators import MaxValueValidator
class Criterio(models.Model):
label = models.CharField(max_length=100)
def __str__(self):
return self.label
class Candidato(models.Model):
name = models.CharField(max_length=100)
e_mail = models.EmailField(max_length=100, default = '')
github = models.URLField(default = '')
linkedin = models.URLField(max_length=100, default = '')
cover_letter = models.TextField(default = '')
Ensino_superior = models.BooleanField(default = False)
med = models.IntegerField(default = 0)
#talvez tenha que alterrar essa linha
docfile = models.FileField(upload_to='/home/douglas/Documentos/Django/my-second-blog/site_/media', null=True, blank=True)
def __str__(self):
return self.name
class Avaliacao(models.Model):
candidato = models.ForeignKey(Candidato)
criterio = models.ForeignKey(Criterio, default='')
nota = models.PositiveIntegerField(default = 0, validators=[MaxValueValidator(10)])
avaliador = models.ForeignKey('auth.User')
def __str__(self):
return self
views.py:
from django.shortcuts import render, get_object_or_404
from .models import Candidato, Criterio
from django import forms
from .forms import CandForm
from .forms import AvalForm
from django.shortcuts import redirect
def canditato_list(request):
candidatos = Candidato.objects.all()
return render(request, 'app/candidato_list.html', {'candidatos': candidatos})
def candidato_detalhe(request, pk):
candidato = get_object_or_404(Candidato, pk=pk)
return render(request, 'app/candidato_detalhe.html', {'candidato': candidato})
def avaliar(request):
#criterios = Criterio.objects.all()
if request.method == "POST":
form2 = AvalForm(request.POST)
if form2.is_valid():
post = form2.save(commit=False)
post.save()
return redirect('canditato_list', pk=post.pk)
else:
form2 = AvalForm()
return render(request, 'app/avaliacao.html', {'criterios': form2})
def cadastrar(request):
if request.method == "POST":
form = CandForm(request.POST)
if form.is_valid():
post = form.save(commit=False)
post.save()
return redirect('candidato_detalhe', pk=post.pk)
else:
form = CandForm()
return render(request, 'app/cadastro.html', {'form': form})
在此视图中调用的模板:
<!DOCTYPE html></!DOCTYPE html>
<html>
<head>
<title>Avaliação</title>
</head>
<body>
<h1>Avaliação</h1>
<form method="POST" class="post-form">
{% csrf_token %}
{{ criterios.as_p }}
<button type="submit" class="save btn btn-default">Guardar</button>
</form>
</body>
</html>
</html>
答案 0 :(得分:1)
如果您删除了迁移文件,则 django_migrations 表中仍会有与您运行的迁移相对应的条目。在那里查看,并将条目删回到它工作的位置(在添加&#39; nota&#39;列之前)。
当您运行make migrations时,它会创建迁移文件,但不会触及数据库。运行迁移时,它使用迁移文件生成SQL以更改数据库表。它记录已在django_migrations表中运行的所有迁移。如果您已经删除了迁移文件夹,则删除该表中与您的应用程序相关的所有迁移(还将有与Django相关的迁移,例如auth表 - 不要删除它们)。
答案 1 :(得分:0)
我得到了好伙伴,我做的是:
1 - 删除“迁移”文件夹中的所有迁移文件,但 init .py
除外2 - 删除db.sqlite3(在我的情况下)。
3再次运行 python manage.py makemigrations 和 python manage.py migrate 。
我希望我有所帮助。