字段“id”需要一个数字但得到了<querydict: {'csrfmiddlewaretoken':< div><div id="text_translate"><p> 我有这个错误，我无法解决问题</p><p><strong>查看.PY</strong></p><pre> def projects_add(request, client_id): if request.method == 'POST': form = ProjectForm(request.POST or None) if form.is_valid(): instance = form.save(commit=False) client = Clients.objects.get(pk=client_id) instance.client = client instance.created_date = datetime.date.today() instance.status = 'Análise' instance.save() messages.success(request,'Projeto adicionado') else: messages.error(request,'Ocorreu um erro:') return HttpResponseRedirect(reverse('projects')) else. form = ProjectForm(client_id) all_projects = Project.objects,all() return render(request.'projects,html':{'form',form: 'all_projects':all_projects})</pre><p> <strong>FORMS.PY</strong></p><pre> class ProjectForm(ModelForm): class Meta: model = Project fields = ['owner','farm','warranty','modal','culture','value','final_date'] def __init__(self, client_id, *args,**kwargs): super(ProjectForm, self).__init__(*args,**kwargs) self.fields['value'].required = False self.fields['final_date'].required = False self.fields['farm'].queryset = Farm.objects.filter(client=client_id) self.fields['warranty'].queryset = Farm.objects.filter(client=client_id) for field_name, field in self.fields.items(): field.widget.attrs['class'] = 'form-control'</pre><p> <strong>模型.PY</strong></p><pre> class Project(models.Model): modal_types = [('CUSTEIO AGRÍCOLA','Custeio Agrícola'),('CUSTEIO PECUÁRIO','Custeio Pecuário'),('INVESTIMENTO AGRÍCOLA','Investimento Agrícola'),('INVESTIMENTO PECUÁRIO','Investimento Pecuário'),('FGPP','FGPP')] farm = models.ManyToManyField(Farm, related_name='project_farm',verbose_name='Propriedade beneficiada') client = models.ForeignKey(Clients, on_delete=models.CASCADE, related_name='project_client',default=None,null=True, verbose_name='Cliente') owner = models.ForeignKey(Owner, on_delete=models.CASCADE, related_name='project_bidder',default=None,null=True, verbose_name='Proponente') warranty = models.ManyToManyField(Farm, related_name='project_warranty',default=None, verbose_name='Propriedade de garantia') modal = models.CharField(max_length=100,default=None,choices=modal_types, null=True, verbose_name='Tipo') culture = models.CharField(max_length=50,null=True, verbose_name='Cultura') status = models.CharField(max_length=50,null=True, verbose_name='Status') created_date = models.DateField(null=True, verbose_name='Data de criação') value = models.FloatField(max_length=10,null=True, verbose_name='Valor financiado') final_date = models.DateField(default=None,null=True, verbose_name='Fim do contrato')</pre><p> <strong>追溯</strong></p><p>上述异常是以下异常的直接原因：</p><p> 回溯（最近调用最后）：文件“C:\Users\luizh\anaconda3\envs\env\lib\site-packages\django\core\handlers\exception.py”，第 47 行，在内部响应 = get_response(request ) 文件“C:\Users\luizh\anaconda3\envs\env\lib\site-packages\django\core\handlers\base.py”，第 181 行，在 _get_response response = wrapped_callback(request, *callback_args, **callback_kwargs ) 文件“C:\Users\luizh\Desktop\Novo Sistema\ATR\projects\views.py”，第 30 行，projects_add 形式 = ProjectForm（request.POST 或无）文件“C:\Users\luizh\Desktop\ Novo Sistema\ATR\projects\forms.py"，第 16 行，在<strong>init</strong> self.fields['farm'].queryset = Farm.objects.filter(client=client_id) File "C:\Users\luizh\anaconda3\envs \env\lib\site-packages\django\db\models\manager.py"，第 85 行，在 manager_method return getattr(self.get_queryset(), name)(*args, **kwargs) File "C:\Users \luizh\anaconda3\envs\env\lib\site-packages\django\db\models\query.py”，第 974 行，在过滤器返回 self._filter_or_exclude(False, args, kwargs) 文件“C:\Users\l uizh\anaconda3\envs\env\lib\site-packages\django\db\models\query.py”，第 992 行，在 _filter_or_exclude clone._filter_or_exclude_inplace(negate, args, kwargs) 文件“C:\Users\luizh\anaconda3 \envs\env\lib\site-packages\django\db\models\query.py”，第 999 行，在 _filter_or_exclude_inplace self._query.add_q(Q(*args, **kwargs)) 文件“C:\Users\ luizh\anaconda3\envs\env\lib\site-packages\django\db\models\sql\query.py”，第 1375 行，在 add_q 子句中，_ = self._add_q(q_object, self.used_aliases) File “C: \Users\luizh\anaconda3\envs\env\lib\site-packages\django\db\models\sql\query.py", line 1396, in <em>add_q child_clause, needed_inner = self.build_filter( File "C:\Users\ luizh\anaconda3\envs\env\lib\site-packages\django\db\models\sql\query.py”，第 1329 行，在 build_filter condition = self.build_lookup(lookups, col, value) File “C:\Users \luizh\anaconda3\envs\env\lib\site-packages\django\db\models\sql\query.py”，第 1180 行，在 build_lookup lookup = lookup_class(lhs, rhs) 文件“C:\Users\luizh\ anaconda3\envs\env\l</em> <em>ib\site-packages\django\db\models\lookups.py", line 22, in <strong>init</strong> self.rhs = self.get_prep_lookup() File "C:\Users\luizh\anaconda3\envs\env\lib\site- packages\django\db\models\fields\related_lookups.py”，第 120 行，在 get_prep_lookup self.rhs = target_field.get_prep_value(self.rhs) 文件“C:\Users\luizh\anaconda3\envs\env\lib\site -packages\django\db\models\ <em>fields_init.py</em></em> ”，第 1824 行，在 get_prep_value raise e. <strong>class</strong> (TypeError: Field 'id' expected a number 但得到了 <QueryDict: {'csrfmiddlewaretoken': ['ha7mOkHl8SkjuKDx06TipoflYdFFEdZFxT3ST5DdVZYRSGkHSffTOTGWdDXWaWf1'], 'owner': ['1'], 'farm': ['4'], 'warranty : ['4'], 'modal': ['CUSTEIO AGRÍCOLA'], 'culture': ['toamte'], 'value': [''], 'final_date': ['']}>. [23 /Feb/2022 11:20:44] “POST /projetos/1 HTTP/1.1” 500 135681</p><p> 我认为问题的发生是因为我用来定义查询集的方式，但我已经尝试了一切但它不起作用。</p></div></querydict:>

Question

我有这个错误，我无法解决问题

查看.PY

def projects_add(request, client_id):
    if request.method == 'POST':
        form = ProjectForm(request.POST or None)
        if form.is_valid():
            instance = form.save(commit=False)
            client = Clients.objects.get(pk=client_id)
            instance.client = client
            instance.created_date = datetime.date.today()
            instance.status = 'Análise'
            instance.save()
            messages.success(request,'Projeto adicionado')
        else:
            messages.error(request,'Ocorreu um erro!')
        return HttpResponseRedirect(reverse('projects'))
    else:
        form = ProjectForm(client_id)
        all_projects = Project.objects.all()
    return render(request,'projects.html',{'form':form,
                                            'all_projects':all_projects})

FORMS.PY

class ProjectForm(ModelForm):

    class Meta:
        model = Project
        fields = ['owner','farm','warranty','modal','culture','value','final_date']

    def __init__(self, client_id, *args,**kwargs):
        super(ProjectForm, self).__init__(*args,**kwargs)
        self.fields['value'].required = False
        self.fields['final_date'].required = False
        self.fields['farm'].queryset = Farm.objects.filter(client=client_id)
        self.fields['warranty'].queryset = Farm.objects.filter(client=client_id)
        for field_name, field in self.fields.items():
            field.widget.attrs['class'] = 'form-control'

模型.PY

class Project(models.Model):
    modal_types = [('CUSTEIO AGRÍCOLA','Custeio Agrícola'),('CUSTEIO PECUÁRIO','Custeio Pecuário'),('INVESTIMENTO AGRÍCOLA','Investimento Agrícola'),('INVESTIMENTO PECUÁRIO','Investimento Pecuário'),('FGPP','FGPP')]
    farm = models.ManyToManyField(Farm, related_name='project_farm',verbose_name='Propriedade beneficiada')
    client = models.ForeignKey(Clients, on_delete=models.CASCADE, related_name='project_client',default=None,null=True, verbose_name='Cliente')
    owner = models.ForeignKey(Owner, on_delete=models.CASCADE, related_name='project_bidder',default=None,null=True, verbose_name='Proponente')
    warranty = models.ManyToManyField(Farm, related_name='project_warranty',default=None, verbose_name='Propriedade de garantia')
    modal = models.CharField(max_length=100,default=None,choices=modal_types, null=True, verbose_name='Tipo')
    culture = models.CharField(max_length=50,null=True, verbose_name='Cultura')
    status = models.CharField(max_length=50,null=True, verbose_name='Status')
    created_date = models.DateField(null=True, verbose_name='Data de criação')
    value = models.FloatField(max_length=10,null=True, verbose_name='Valor financiado')
    final_date = models.DateField(default=None,null=True, verbose_name='Fim do contrato') 

追溯

上述异常是以下异常的直接原因：

回溯（最近调用最后）：文件“C:\Users\luizh\anaconda3\envs\env\lib\site-packages\django\core\handlers\exception.py”，第 47 行，在内部响应 = get_response(request ) 文件“C:\Users\luizh\anaconda3\envs\env\lib\site-packages\django\core\handlers\base.py”，第 181 行，在 _get_response response = wrapped_callback(request, *callback_args, **callback_kwargs ) 文件“C:\Users\luizh\Desktop\Novo Sistema\ATR\projects\views.py”，第 30 行，projects_add 形式 = ProjectForm（request.POST 或无）文件“C:\Users\luizh\Desktop\ Novo Sistema\ATR\projects\forms.py"，第 16 行，在init self.fields['farm'].queryset = Farm.objects.filter(client=client_id) File "C:\Users\luizh\anaconda3\envs \env\lib\site-packages\django\db\models\manager.py"，第 85 行，在 manager_method return getattr(self.get_queryset(), name)(*args, **kwargs) File "C:\Users \luizh\anaconda3\envs\env\lib\site-packages\django\db\models\query.py”，第 974 行，在过滤器返回 self._filter_or_exclude(False, args, kwargs) 文件“C:\Users\l uizh\anaconda3\envs\env\lib\site-packages\django\db\models\query.py”，第 992 行，在 _filter_or_exclude clone._filter_or_exclude_inplace(negate, args, kwargs) 文件“C:\Users\luizh\anaconda3 \envs\env\lib\site-packages\django\db\models\query.py”，第 999 行，在 _filter_or_exclude_inplace self._query.add_q(Q(*args, **kwargs)) 文件“C:\Users\ luizh\anaconda3\envs\env\lib\site-packages\django\db\models\sql\query.py”，第 1375 行，在 add_q 子句中，_ = self._add_q(q_object, self.used_aliases) File “C: \Users\luizh\anaconda3\envs\env\lib\site-packages\django\db\models\sql\query.py", line 1396, in add_q child_clause, needed_inner = self.build_filter( File "C:\Users\ luizh\anaconda3\envs\env\lib\site-packages\django\db\models\sql\query.py”，第 1329 行，在 build_filter condition = self.build_lookup(lookups, col, value) File “C:\Users \luizh\anaconda3\envs\env\lib\site-packages\django\db\models\sql\query.py”，第 1180 行，在 build_lookup lookup = lookup_class(lhs, rhs) 文件“C:\Users\luizh\ anaconda3\envs\env\l ib\site-packages\django\db\models\lookups.py", line 22, in init self.rhs = self.get_prep_lookup() File "C:\Users\luizh\anaconda3\envs\env\lib\site- packages\django\db\models\fields\related_lookups.py”，第 120 行，在 get_prep_lookup self.rhs = target_field.get_prep_value(self.rhs) 文件“C:\Users\luizh\anaconda3\envs\env\lib\site -packages\django\db\models\ fields_init.py ”，第 1824 行，在 get_prep_value raise e. class (TypeError: Field 'id' expected a number 但得到了 <QueryDict: {'csrfmiddlewaretoken': ['ha7mOkHl8SkjuKDx06TipoflYdFFEdZFxT3ST5DdVZYRSGkHSffTOTGWdDXWaWf1'], 'owner': ['1'], 'farm': ['4'], 'warranty : ['4'], 'modal': ['CUSTEIO AGRÍCOLA'], 'culture': ['toamte'], 'value': [''], 'final_date': ['']}>. [23 /Feb/2022 11:20:44] “POST /projetos/1 HTTP/1.1” 500 135681

我认为问题的发生是因为我用来定义查询集的方式，但我已经尝试了一切但它不起作用。

Answer 1

您将client_id作为ProjectForm构造函数的第一个参数，因此您应该使用以下方法创建ProjectForm ：

from django.shortcuts import get_object_or_404, redirect

def projects_add(request, client_id):
    if request.method == 'POST':
        form = ProjectForm(client_id, request.POST, request.FILES)
        if form.is_valid():
            client = get_object_or_404(Clients, pk=client_id)
            form.instance.client = client
            form.instance.created_date = datetime.date.today()
            form.instance.status = 'Análise'
            form.save()
            return redirect('projects')
            messages.success(request,'Projeto adicionado')
        else:
            messages.error(request,'Ocorreu um erro!')
    else:
        form = ProjectForm(client_id)
    all_projects = Project.objects.all()
    return render(request,'projects.html',{'form':form, 'all_projects':all_projects})

---

注意：通常最好使用get_object_or_404(…) [Django-doc] ，然后直接使用.get(…) [Django-doc] 。 如果 object 不存在，例如因为用户自己更改了 URL， get_object_or_404(…)将导致返回HTTP 404 Not Found响应，而使用.get(…)将导致HTTP 500 Server Error 。