单击提交按钮时表单未提交值

Question

我正在使用 django 表单提交报告。但是点击提交按钮后，它会发送 POST 请求，但 POST 请求中没有添加任何数据。

这是我的forms.py

class WeeklyForm(forms.Form): 

    tname = forms.ModelMultipleChoiceField(queryset=CustomTeacher.objects.values_list('tname', flat = True), widget =forms.Select( attrs ={'class': 'form-control' , 'placeholder' : ' Teachers Name '}))

    sname = forms.ModelMultipleChoiceField(queryset=CustomStudent.objects.values_list('sname', flat = True), widget =forms.CheckboxSelectMultiple( attrs ={'class': 'form-control' 'form-check-input' 'form-check-inline', 'placeholder' : ' Students Name '}))

    class_name = forms.CharField(widget= forms.Select(choices= [('1', 'UKG'), ('2', 'Class 1'), ('3', 'LKG'), ('4', 'Montessori') ] ,attrs={'class': 'form-control', 'placeholder' : 'Select Class'}))

    date =  forms.DateField(initial = datetime.date.today() , required=False, widget =forms.DateInput( attrs ={'class': 'form-control' , 'placeholder' : ' Date ', 'name' : 'date'}))

    objective = forms.CharField(widget = forms.Textarea(attrs={'class': 'form-control', 'placeholder' : 'objective'}))
 
    target = forms.CharField(widget = forms.Textarea(attrs={'class': 'form-control', 'placeholder' : 'target'}))
    
    how = forms.CharField(widget = forms.Textarea(attrs={'class': 'form-control', 'placeholder' : 'how?'}))
    
    material = forms.CharField(widget = forms.Textarea(attrs={'class': 'form-control', 'placeholder' : 'material required'}))

    support = forms.CharField(widget = forms.Textarea(attrs={'class': 'form-control', 'placeholder' : 'Any Support Required?'}))

这是来自views.py的函数，我用它来获取数据并插入数据库

view.py

def weekly(request):
    
    context = ''
    form = WeeklyForm()
    context = {'form': form} 
    if request.method == 'POST':
        form = WeeklyForm(request.POST)

        if form.is_valid():
            tname1 = form.cleaned_data['teachers']
            sname1 = form.cleaned_data['students']
            date1 = form.cleaned_data['date']
            objective1 = form.cleaned_data['objective']
            tplan1 = form.cleaned_data['target']
            how1 = form.cleaned_data['how']
            material1 = form.cleaned_data['material']
            extra1 = form.cleaned_data['support']

            print (tname1)
            report = wreport(tname = tname1, sname = sname1, fdate = date1, objective = objective1, tplan = tplan1, how = how1, material = material1, extra = extra1)
            report.save()

            messages.success(request, "Your report was submitted Successfully.")
    else:
            form = WeeklyForm()
            context = {'form': form}
    return render(request, 'teacher/weekly.html', context)

我只展示了一个模板示例，因为有很多行代码。 每周.html

<form action="" method="POST">
    {% csrf_token %}
    <!-- Teacher section  -->
    <div class="row">
        <div class="col-lg-3 mb-2">
            <div><strong>Teacher's Name:</strong></div>
        </div>
        <div class="col-lg-9">
            {{ form.teachers }}
        </div>
    </div>
    
    <!-- Student section -->
    <div class="row mt-4">
        <div class="col-lg-3">
            <!-- name="sname" id="sname" -->
            <div><strong>Student's Name:</strong></div>
        </div>
        <div class="col-lg-9">

            <div class="form-check-inline">
                <label class="form-check-label">
                    <!-- {% for student in students %}
                        <input type="checkbox" class="form-check-input" value="">
                        {{student.sname}}
                    {% endfor %} -->
                </label>
            </div>
            {{ form.sname }}
        </div>
    </div>

    <!-- submit button  -->
    <div class="row">
        <div class="mx-auto">

            <button type="submit" class="btn btn-outline-dark mb-4 shadow" style="border-radius:25px;">Submit</button>
        </div>
    </div>
</form>

我已尝试调试和打印从表单接收到的值，但没有打印任何内容。

编辑：经过进一步调试，我发现我的表单没有验证这是我使用form.errors 函数捕获的错误

<ul class="errorlist"><li>tname<ul class="errorlist"><li>Enter a list of values.</li></ul></li><li>sname<ul class="errorlist"><li>“Test Student” is not a valid value.</li></ul></li></ul>

Answer 1

首先：当你使用 queryset 属性时，你需要分配 queryset，而每当使用选项属性时，你需要分配 list 或 dict

第二次：当您尝试请求相同的 URL 时。您必须在表单中删除 action

当您想对另一个 URL 进行请求时。您必须添加正在调用的视图的操作网址

这里是form.py

class WeeklyForm(forms.Form): 

    tname = forms.ModelMultipleChoiceField(queryset=CustomTeacher.objects.all(), widget =forms.Select( attrs ={'class': 'form-control' , 'placeholder' : ' Teachers Name '}))

    sname = forms.ModelMultipleChoiceField(queryset=CustomStudent.objects.all(), widget =forms.CheckboxSelectMultiple( attrs ={'class': 'form-control' 'form-check-input' 'form-check-inline', 'placeholder' : ' Students Name '}))

    class_name = forms.CharField(widget= forms.Select(choices= [('1', 'UKG'), ('2', 'Class 1'), ('3', 'LKG'), ('4', 'Montessori') ] ,attrs={'class': 'form-control', 'placeholder' : 'Select Class'}))

    date =  forms.DateField(initial = datetime.date.today() , required=False, widget =forms.DateInput( attrs ={'class': 'form-control' , 'placeholder' : ' Date ', 'name' : 'date'}))

    objective = forms.CharField(widget = forms.Textarea(attrs={'class': 'form-control', 'placeholder' : 'objective'}))
 
    target = forms.CharField(widget = forms.Textarea(attrs={'class': 'form-control', 'placeholder' : 'target'}))
    
    how = forms.CharField(widget = forms.Textarea(attrs={'class': 'form-control', 'placeholder' : 'how?'}))
    
    material = forms.CharField(widget = forms.Textarea(attrs={'class': 'form-control', 'placeholder' : 'material required'}))

    support = forms.CharField(widget = forms.Textarea(attrs={'class': 'form-control', 'placeholder' : 'Any Support Required?'}))

这里我认为是同一个 URL 上的请求

<form method="POST">
    {% csrf_token %}
    <!-- Teacher section  -->
    <div class="row">
        <div class="col-lg-3 mb-2">
            <div><strong>Teachers Name:</strong></div>
        </div>
        <div class="col-lg-9">
            {{ form.teachers }}
        </div>
    </div>

    <!-- submit button  -->
    <div class="row">
        <div class="mx-auto">

            <button type="submit" class="btn btn-outline-dark mb-4 shadow" style="border-radius:25px;">Submit</button>
        </div>
    </div>
</form>

这里是视图

def weekly(request):
    
    context = ''
    form = WeeklyForm()
    context = {'form': form} 
    if request.method == 'POST':
        form = WeeklyForm(request.POST)

        if form.is_valid():
            data = form.cleaned_data
            print (data)

            report = wreport(tname = data['teachers'], sname = data['students'], fdate = data['date'], objective = data['objective'], tplan = data['target'], how = data['how'], material = data['material'], extra = data['support'])
            report.save()

            messages.success(request, "Your report was submitted Successfully.")
    else:
            form = WeeklyForm()
            context = {'form': form}
    return render(request, 'teacher/weekly.html', context)

希望你能理解我想说的话，让我知道任何查询问题