Python 如何在Django中将表单输入与数据库值进行比较?
我有一个表单来输入一个用户id,我想将这个id与数据库值(usrId)进行比较 forms.pyPython 如何在Django中将表单输入与数据库值进行比较?,python,django,Python,Django,我有一个表单来输入一个用户id,我想将这个id与数据库值(usrId)进行比较 forms.py from django import forms from .models import UserInfo class NameForm(forms.Form): your_id = forms.CharField(label='Your id', max_length=100) def clean(self): cleaned_data = super(NameForm, se
from django import forms
from .models import UserInfo
class NameForm(forms.Form):
your_id = forms.CharField(label='Your id', max_length=100)
def clean(self):
cleaned_data = super(NameForm, self).clean()
your_id = cleaned_data.get("your_id")
p = UserInfo.objects.all()
if your_id:
for i in p:
if i.usrId not in your_id:
raise forms.ValidationError(
"User not exist."
)
class UserInfo(models.Model):
name = models.CharField(max_length=200)
usrId = models.CharField(max_length=200)
age = models.CharField(max_length=200)
poste = models.CharField(max_length=200)
date1 = models.DateTimeField('date of recruitment')
def __str__(self): # __unicode__ on Python 2
return self.name
# if this is a POST request we need to process the form data
if request.method == 'POST':
# create a form instance and populate it with data from the request:
form = NameForm(request.POST)
# check whether it's valid:
if form.is_valid():
# process the data in form.cleaned_data as required
# ...
# redirect to a new URL:
return generate_pdf(request, Type_id)
# if a GET (or any other method) we'll create a blank form
else:
form = NameForm()
return render(request, 'rh/detail.html', {'form': form, 'type_id': Type_id})
当我这样做时,什么都不会发生,我得到的用户不存在。
对于任何值
型号.py
from django import forms
from .models import UserInfo
class NameForm(forms.Form):
your_id = forms.CharField(label='Your id', max_length=100)
def clean(self):
cleaned_data = super(NameForm, self).clean()
your_id = cleaned_data.get("your_id")
p = UserInfo.objects.all()
if your_id:
for i in p:
if i.usrId not in your_id:
raise forms.ValidationError(
"User not exist."
)
class UserInfo(models.Model):
name = models.CharField(max_length=200)
usrId = models.CharField(max_length=200)
age = models.CharField(max_length=200)
poste = models.CharField(max_length=200)
date1 = models.DateTimeField('date of recruitment')
def __str__(self): # __unicode__ on Python 2
return self.name
# if this is a POST request we need to process the form data
if request.method == 'POST':
# create a form instance and populate it with data from the request:
form = NameForm(request.POST)
# check whether it's valid:
if form.is_valid():
# process the data in form.cleaned_data as required
# ...
# redirect to a new URL:
return generate_pdf(request, Type_id)
# if a GET (or any other method) we'll create a blank form
else:
form = NameForm()
return render(request, 'rh/detail.html', {'form': form, 'type_id': Type_id})
视图.py
from django import forms
from .models import UserInfo
class NameForm(forms.Form):
your_id = forms.CharField(label='Your id', max_length=100)
def clean(self):
cleaned_data = super(NameForm, self).clean()
your_id = cleaned_data.get("your_id")
p = UserInfo.objects.all()
if your_id:
for i in p:
if i.usrId not in your_id:
raise forms.ValidationError(
"User not exist."
)
class UserInfo(models.Model):
name = models.CharField(max_length=200)
usrId = models.CharField(max_length=200)
age = models.CharField(max_length=200)
poste = models.CharField(max_length=200)
date1 = models.DateTimeField('date of recruitment')
def __str__(self): # __unicode__ on Python 2
return self.name
# if this is a POST request we need to process the form data
if request.method == 'POST':
# create a form instance and populate it with data from the request:
form = NameForm(request.POST)
# check whether it's valid:
if form.is_valid():
# process the data in form.cleaned_data as required
# ...
# redirect to a new URL:
return generate_pdf(request, Type_id)
# if a GET (or any other method) we'll create a blank form
else:
form = NameForm()
return render(request, 'rh/detail.html', {'form': form, 'type_id': Type_id})
假设您尝试匹配的用户id确实存在(记录该id并手动查询数据库以确保)。您的代码应更改如下:
try:
p = UserInfo.objects.get(id=your_id)
except UserInfo.DoesNotExist:
raise forms.ValidationError("User not exist.")
这段代码更短,效率更高(不像当前版本那样获取所有用户对象)