Django表单：使用其他模型的选项进行多重选择（外键）

我正在尝试创建一个表单，用户可以在其中选择多个技师。当我将行

technology=forms.SelectMultiple（label='technologies included'）

添加到我的forms.py时，我得到一个没有数据的大空白框。如何使用用户模型中的技术人员填充该框

型号.py

class Incident(models.Model):
    user_id = models.ForeignKey(User, related_name='user')
    technician = models.ForeignKey(User, related_name='technician')
    capa = models.CharField('capa number', max_length=9)

class IncidentForm(forms.ModelForm):

    ###################### TRYING! ################################
    technician = forms.SelectMultiple(label='Technicians Involved')
    ###############################################################

    class Meta:
        model = Incident
        fields = [  'user_id',
                    'technician',
                    'capa',
                ]

def report_incident(request):

    template = "report.html"

    if request.method == 'POST':

        form = IncidentForm(request.POST)

        if form.is_valid():

            # Auto capturing logged in user
            incident = form.save(False)
            incident.user_id = request.user
            incident.save()
            return HttpResponseRedirect('/incidents/')
    else:
        form = IncidentForm() #an unbound form

        return render(request, template, {'form': form})

class Incident(models.Model):
    user_id = models.ForeignKey(User, related_name='user')
    technician = models.ManyToManyField(User, related_name='technician')
    capa = models.CharField('capa number', max_length=9)

class IncidentForm(forms.ModelForm):

    technician = forms.SelectMultiple()

    class Meta:
        model = Incident
        fields = [  'user_id',
                    'technician',
                    'capa',
                ]

forms.py

class Incident(models.Model):
    user_id = models.ForeignKey(User, related_name='user')
    technician = models.ForeignKey(User, related_name='technician')
    capa = models.CharField('capa number', max_length=9)

class IncidentForm(forms.ModelForm):

    ###################### TRYING! ################################
    technician = forms.SelectMultiple(label='Technicians Involved')
    ###############################################################

    class Meta:
        model = Incident
        fields = [  'user_id',
                    'technician',
                    'capa',
                ]

def report_incident(request):

    template = "report.html"

    if request.method == 'POST':

        form = IncidentForm(request.POST)

        if form.is_valid():

            # Auto capturing logged in user
            incident = form.save(False)
            incident.user_id = request.user
            incident.save()
            return HttpResponseRedirect('/incidents/')
    else:
        form = IncidentForm() #an unbound form

        return render(request, template, {'form': form})

class Incident(models.Model):
    user_id = models.ForeignKey(User, related_name='user')
    technician = models.ManyToManyField(User, related_name='technician')
    capa = models.CharField('capa number', max_length=9)

class IncidentForm(forms.ModelForm):

    technician = forms.SelectMultiple()

    class Meta:
        model = Incident
        fields = [  'user_id',
                    'technician',
                    'capa',
                ]

视图.py

class Incident(models.Model):
    user_id = models.ForeignKey(User, related_name='user')
    technician = models.ForeignKey(User, related_name='technician')
    capa = models.CharField('capa number', max_length=9)

class IncidentForm(forms.ModelForm):

    ###################### TRYING! ################################
    technician = forms.SelectMultiple(label='Technicians Involved')
    ###############################################################

    class Meta:
        model = Incident
        fields = [  'user_id',
                    'technician',
                    'capa',
                ]

def report_incident(request):

    template = "report.html"

    if request.method == 'POST':

        form = IncidentForm(request.POST)

        if form.is_valid():

            # Auto capturing logged in user
            incident = form.save(False)
            incident.user_id = request.user
            incident.save()
            return HttpResponseRedirect('/incidents/')
    else:
        form = IncidentForm() #an unbound form

        return render(request, template, {'form': form})

class Incident(models.Model):
    user_id = models.ForeignKey(User, related_name='user')
    technician = models.ManyToManyField(User, related_name='technician')
    capa = models.CharField('capa number', max_length=9)

class IncidentForm(forms.ModelForm):

    technician = forms.SelectMultiple()

    class Meta:
        model = Incident
        fields = [  'user_id',
                    'technician',
                    'capa',
                ]

**************更新我在下面所做的更正*********************

型号.py

class Incident(models.Model):
    user_id = models.ForeignKey(User, related_name='user')
    technician = models.ForeignKey(User, related_name='technician')
    capa = models.CharField('capa number', max_length=9)

class IncidentForm(forms.ModelForm):

    ###################### TRYING! ################################
    technician = forms.SelectMultiple(label='Technicians Involved')
    ###############################################################

    class Meta:
        model = Incident
        fields = [  'user_id',
                    'technician',
                    'capa',
                ]

def report_incident(request):

    template = "report.html"

    if request.method == 'POST':

        form = IncidentForm(request.POST)

        if form.is_valid():

            # Auto capturing logged in user
            incident = form.save(False)
            incident.user_id = request.user
            incident.save()
            return HttpResponseRedirect('/incidents/')
    else:
        form = IncidentForm() #an unbound form

        return render(request, template, {'form': form})

class Incident(models.Model):
    user_id = models.ForeignKey(User, related_name='user')
    technician = models.ManyToManyField(User, related_name='technician')
    capa = models.CharField('capa number', max_length=9)

class IncidentForm(forms.ModelForm):

    technician = forms.SelectMultiple()

    class Meta:
        model = Incident
        fields = [  'user_id',
                    'technician',
                    'capa',
                ]

forms.py

class Incident(models.Model):
    user_id = models.ForeignKey(User, related_name='user')
    technician = models.ForeignKey(User, related_name='technician')
    capa = models.CharField('capa number', max_length=9)

class IncidentForm(forms.ModelForm):

    ###################### TRYING! ################################
    technician = forms.SelectMultiple(label='Technicians Involved')
    ###############################################################

    class Meta:
        model = Incident
        fields = [  'user_id',
                    'technician',
                    'capa',
                ]

def report_incident(request):

    template = "report.html"

    if request.method == 'POST':

        form = IncidentForm(request.POST)

        if form.is_valid():

            # Auto capturing logged in user
            incident = form.save(False)
            incident.user_id = request.user
            incident.save()
            return HttpResponseRedirect('/incidents/')
    else:
        form = IncidentForm() #an unbound form

        return render(request, template, {'form': form})

class Incident(models.Model):
    user_id = models.ForeignKey(User, related_name='user')
    technician = models.ManyToManyField(User, related_name='technician')
    capa = models.CharField('capa number', max_length=9)

class IncidentForm(forms.ModelForm):

    technician = forms.SelectMultiple()

    class Meta:
        model = Incident
        fields = [  'user_id',
                    'technician',
                    'capa',
                ]

视图.py 不变

admin.py 在管理界面中对每个事件查看多个技师所做的更改

class IncidentAdmin(admin.ModelAdmin):
        list_display = ('id',
                        'user_id',
                        'capa',
                        'get_technicians'
                        )

       def get_technicians(self):
            return "\n".join([t.technicians for t in obj.technician.all()])

试试这个

class IncidentForm(forms.ModelForm):
   technician = forms.ModelMultipleChoiceField(widget=forms.CheckboxSelectMultiple(), queryset=User.objects.all())

     class Meta:
        model = Incident
        fields = [
                'technician',
                'capa',
               ]

---

您希望为一个事件选择多个技师，但每个事件对象只能有一个技师（而技师可以有多个事件）。还是我这里出了什么问题？没错。我把自己限制在哪里了？事件对象只能有一个技术人员？你用外键限制了它-你需要多对多，我想他想要多对多。。。否则会产生一个新问题，用户只能有一个问题incident@Anentropic是的，你说得对！没有骰子。我将

u

从

SelectMultiple

中取出，并将逗号替换为一个开括号。

“User”对象不可编辑。我将在我的模型中使用多对多。py我编辑了我的答案，以便与您的修订版配合使用，并发现这样做效果更好，因为您在forms.py中使用的是模型中的默认字段，forms.ModelForm最终提供了该字段。SelectMultiple是一个小部件，而不是表单字段。很抱歉，我的第一个答案没有经过计算，浪费了你的时间。这看起来像是现在。。。尽管您应该包括表单上的所有字段，因为它们目前在模型级别都是必需的