Setting the initial value of checkbox fields in form

Using Django Forms & APIs
1

I have this form:

class OrderSendForm(forms.Form):

    MODEL_FIELD_MAPPING = {
        'sent_to_metal_sector': 'metal_sector',
        'sent_to_tailor_sector': 'tailor_sector',
        'sent_to_upholstery_sector': 'upholstery_sector',
        'sent_to_packing_sector': 'packing_sector',
        'sent_to_loading_sector': 'loading_sector'
    }
    
    sectors = forms.MultipleChoiceField(
        choices=(
            ('metal_sector', 'Sektor Metal'),
            ('tailor_sector', 'Sektor Šivaona'),
            ('upholstery_sector', 'Sektor Tapaciranje'),
            ('packing_sector', 'Sektor Pakovanje'),
            ('loading_sector', 'Sektor Utovar'),
        ),
        widget=forms.CheckboxSelectMultiple,
    )

How do I set the initial values for checkbox fields based on the value of corresponding model field. For example, if value of model field sent_to_metal_sector is True, then form field metal_sector should be checked when the form is rendered.

2

You can set the default initial values while creating a form instance in your views.py
For example

 MODEL_FIELD_MAPPING = {
        'sent_to_metal_sector': 'metal_sector',
        'sent_to_tailor_sector': 'tailor_sector',
        'sent_to_upholstery_sector': 'upholstery_sector',
        'sent_to_packing_sector': 'packing_sector',
        'sent_to_loading_sector': 'loading_sector'
    }

def example(request):
    choice = "sent_to_metal_sector" # You can set it however you want to
    form = OrderSendForm({"sectors": MODEL_FIELD_MAPPING.get("MODEL_FIELD_MAPPING ")})