i have this Select a valid choice. term1 is not one of the available choices.

Using Django Forms & APIs
1

this my form.py :

 class SchoolForm(forms.Form):

    attr_options = forms.MultipleChoiceField(
        
        label='خيارات إضافية',
        required=False,
        widget=forms.CheckboxSelectMultiple
    )
    teachers = forms.ModelMultipleChoiceField(
        queryset=Services.objects.all(),
        label='اختيار المعلمين',
        widget=forms.CheckboxSelectMultiple
    )

and this my view.py

def schools_dashboard(request):
    subscribe_key = 'school'
    html_name = 'schools_dashboard.html'

    # جلب جميع الخدمات التي تتعلق بـ 'school'
    services = Services.objects.filter(category='school')

    if request.user.is_authenticated:
        try:
            subscription = Subscription.objects.get(user=request.user)
        except Subscription.DoesNotExist:
            return render(request, 'faulty_subscription.html',
                          {'header': 'غير مشترك', 'text': f'يبدو انك غير مشترك في اي خطة',
                           'page_link': 'signup/subscription/'})

        if subscription.subscription_type != subscribe_key:
            subscribe_key = Subscription.objects.get(user=request.user)
            return render(request, 'faulty_subscription.html', {'header': 'مشترك و لكن !! ',
                                                                'text': f'اشتراكك اشتراك {subscriptions_map(subscription.subscription_type)} و هذه صفحته ',
                                                                'page_link': subscription.subscription_type})

        if request.method == 'POST':
            form = SchoolForm(request.POST)
            if form.is_valid():
                service = request.POST.get('service','')
                attr_options = form.cleaned_data['attr_options']
                teachers = form.cleaned_data['teachers']
                # معالجة البيانات هنا
                return redirect('Schools Dashboard')  # تغيير هذا إلى عنوان URL المناسب
        else:
            form = SchoolForm()

        # تحديث خيارات إضافية بناءً على الخدمة المحددة
        selected_service_name = request.GET.get('service')
        if selected_service_name:
            try:
                service = Services.objects.get(name=selected_service_name)
                attr_choices = [(option.split(',')[1].strip(), option.split(',')[0].strip()) for option in service.attr.split('/')]
                form.fields['attr_options'].choices = attr_choices
            except Services.DoesNotExist:
                pass

        return render(request, html_name, {'form': form, 'services': services})

    else:
        return render(request, template_name='signin.html')

and this my html

 <!-- schools_dashboard.html -->
{% load static %}
<!DOCTYPE html>
<html lang="ar">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>نموذج المدرسة</title>
    <link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet">
    <link rel="stylesheet" href="{% static 'css/inst.css' %}">
</head>
<body>
    <div class="container">
        <!-- Banner Section -->
        <div class="banner">
            <h2>{{ user.username }}</h2>
            <a href="{% url 'signout' %}" class="btn btn-custom">تسجيل الخروج</a>
        </div>

        <!-- Form Section -->
        <div class="row justify-content-center">
            <div class="col-md-8 form-container">
                <h2 class="text-center mb-4">نموذج المدرسة</h2>
                <form method="get" action="{% url 'Schools Dashboard' %}">
                    <div class="form-group">
                        <label for="service">اختر الخدمة</label>
                        <select class="form-control" id="service" name="service" onchange="this.form.submit()">
                            <option value="" disabled selected>اختر خدمة</option>
                            {% for service in services %}
                                <option value="{{ service.name }}" {% if request.GET.service == service.name %}selected{% endif %}>
                                    {{ service.name }}
                                </option>
                            {% endfor %}
                        </select>
                    </div>
                </form>

                <form method="post">
                    {% csrf_token %}
                    {{ form.as_p }}

                    <button type="submit" class="btn btn-primary btn-block">إرسال</button>
                </form>
            </div>
        </div>
    </div>
</body>
</html>
2

Welcome @mostafatarawneh !

Please clarify, which form and field is throwing this error?

Side Note: When posting code here, enclose the code between lines of three backtick - ` characters. This means you’ll have a line of ```, then your code, then another line of ```. This forces the forum software to keep your code properly formatted. (I have taken the liberty of modifying your original post for this.)

3

One thing I do see is that while you’re constructing the list of choices for the attr_options field for the form, you’re not doing it for the post portion of your view before checking the is_valid condition.

Django uses those choices as the validator for the field.

You need to perform that operation on the post after creating the instance and binding the data and before you call is_valid.

4

thank you i learn from you ,
erorr field is attr_options

5 
def schools_dashboard(request):
    subscribe_key = 'school'
    html_name = 'schools_dashboard.html'
    services=Services.objects.all()

    if request.user.is_authenticated:
        try:
            subscription = Subscription.objects.get(user=request.user)
        except Subscription.DoesNotExist:
            return render(request, 'faulty_subscription.html',
                          {'header': 'غير مشترك', 'text': 'يبدو أنك غير مشترك في أي خطة',
                           'page_link': 'signup/subscription/'})

        if subscription.subscription_type != subscribe_key:
            return render(request, 'faulty_subscription.html', {'header': 'مشترك ولكن!',
                                                                'text': f'اشتراكك اشتراك {subscription.subscription_type} و هذه صفحته',
                                                                'page_link': subscription.subscription_type})

        if request.method == 'POST':
            # Initialize the form with POST data
            form = SchoolForm(request.POST)

            # Ensure choices for attr_options are updated before validation
            if form.is_bound:
                service_name = form.data.get('service')
                if service_name:
                    try:
                        service = Services.objects.get(name=service_name)
                        attr_choices = []
                        # Process and update the choices for attr_options
                        for option in service.attr.split('/'):
                            try:
                                value, label = option.split(',')
                                attr_choices.append((value.strip(), label.strip()))
                            except ValueError:
                                # Handle invalid format gracefully
                                print(f"Skipping invalid option format: {option}")
                        # Update the choices for the field
                        form.fields['attr_options'].choices = attr_choices
                    except Services.DoesNotExist:
                        # If service does not exist, clear the choices
                        form.fields['attr_options'].choices = []

            # Validate the form with updated choices
            if form.is_valid():
                service = form.cleaned_data.get('service')
                attr_options = form.cleaned_data.get('attr_options')
                print("Service:", service)
                print("Attr Options:", attr_options)
                # Process the form data as needed
                return redirect('index.html')  # Change this to your desired URL
        else:
            # Initialize the form with GET parameters
            service_name = request.GET.get('service')
            form = SchoolForm(initial={'service': service_name})

            # If a service is provided, update the choices for attr_options
            if service_name:
                try:
                    service = Services.objects.get(name=service_name)
                    attr_choices = []
                    # Process and update the choices for attr_options
                    for option in service.attr.split('/'):
                        try:
                            value, label = option.split(',')
                            attr_choices.append((value.strip(), label.strip()))
                        except ValueError:
                            # Handle invalid format gracefully
                            print(f"Skipping invalid option format: {option}")
                    # Update the choices for the field
                    form.fields['attr_options'].choices = attr_choices
                except Services.DoesNotExist:
                    # If service does not exist, clear the choices
                    form.fields['attr_options'].choices = []

        return render(request, html_name, {'form': form,'services':services})

    else:
        return render(request, 'signin.html')

i get same erorr ‘Select a valid choice. term1 is not one of the available choices.’

6

At this point I would suggest adding some print statements into your view to verify that it’s working correctly, and the data you are expecting to see is actually there.

7

where is forms.py???

8

The form is the very first block of code in the original post.

9

oh… i see.

need full error message.