我正在尝试为我的表单创建"编辑"。
urls.py
url(r'^app_1/(?P<id>[-w]+)/edit/$',views.edit, name = 'edit'),
forms.py
class ClanakForma(forms.ModelForm):
class Meta:
model = Clanak
fields = '__all__'
型号.py
class Clanak(models.Model):
naslov = models.CharField(null=False, blank=True, max_length=120)
datumObjave = models.DateField(null=False, blank=False)
autor = models.CharField(null=False, blank=True, max_length=50)
email = models.EmailField(max_length=75, null=True, blank=True)
def __str__(self):
return str(self.naslov) + ', ' + str(self.datumObjave) + ', ' + str(self.autor)
views.py
def edit(request, id):
data = get_object_or_404(Clanak, id = id)
if request.method == "POST":
form = ClanakForma(request.Clanak, instance=data)
if form.is_vaild():
data = form.save(commit=False)
data.naslov = request.user
data.datumObjave = request.user
data.autor = request.user
data.email = request.user
return redirect('readAllNew')
else:
form = ClanakForma(instance=data)
template = 'readAllNew.html'
context = {'form': form}
return render(request, template, context)
readAllNew.html
<!DOCTYPE html>
<html>
<head>
<title></title>
</head>
<body>
<table border="1">
<tr>
<th>Naslov</th>
<th>Datum</th>
<th>Autor</th>
<th>Mail</th>
</tr>
{% for x in data %}
<tr>
<td>{{x.naslov}}</td>
<td>{{x.datumObjave}}</td>
<td>{{x.autor}}</td>
<td>{{x.email}}</td>
<td><a href="{% url 'delete' x.id %}">delete</a></td>
<td><a href="{% url 'edit' x.id %}">edit</a></td>
</tr>
{% endfor %}
</table>
</body>
</html>
所以当我点击"readAllNew.html"的编辑链接时，我会得到错误：
TypeError at/app_1/5/edit/
init()获得意外的关键字参数"instance">
我认为我的观点有问题，但我不确定是什么。
-------------------------------更新-------------------------------
按照建议，我编辑了"forms.py"，但现在我看不到任何表单字段，所以我什么都不能编辑：
参见屏幕截图
----------------更新2------------------------
我创建了一个新的html文件作为"edit.html">
我编辑了"views.py"：
def edit(request, id):
data = get_object_or_404(Clanak, id = id)
if request.method == "POST":
form = ClanakForma(instance=data)
if form.is_vaild():
data = form.save(commit=False)
data.naslov = request.user
data.datumObjave = request.user
data.autor = request.user
data.email = request.user
return redirect('readAllNew.html')
else:
form = ClanakForma(instance=data)
template = 'edit.html'
context = {'form': form}
return render(request, template, context)
现在我可以正确地看到字段和信息，但当我更改某些内容并点击"提交"时，我会收到错误：
AttributeError at /app_1/6/edit/
'ClanakForma' object has no attribute 'is_vaild'
使用forms.ModelForm而不是forms.Form
class Forma(forms.ModelForm):
naslov = forms.CharField(label='naslov')
datumObjave = forms.DateField(label='datumObjave')
autor = forms.CharField(label='autor')
email = forms.EmailField(label='email')
class Meta:
model = Clanak
fields = ('naslov', 'datumObjave', 'autor', 'email')如果您想在表单中使用模型类的所有字段，您可以将Meta类的fields属性指定为fields = '__all__'
#示例类Forma(forms.ModelForm)：类元：型号=克拉纳克fields='__all__'
如果您使用forms.ModelForm，您可以避免大多数使事情变得更容易的实现：)
更新
您需要在模板中呈现表单。因此，将您的模板更改为
<form method="post">
{% csrf_token %}
{{ form }}
<input type="submit" value="Submit">
</form>
不能将instance传递到简单的表单，它必须是ModelForm。使用此：
class Forma(forms.ModelForm):
class Meta:
model = Clanak
fields = ['naslov', 'datumObjave', 'autor', 'email']
labels = {
'naslov': 'naslov',
'datumObjave': 'datumObjave',
'autor': 'autor',
'email': 'email'
}