Defining a FormService class

As we need a way to manage all the sub-forms and subclasses, the most expedient approach is to develop a FormService class. We start by defining a property to contain form instances, and also a list of fields:

class FormService() :
    forms = {}
    list_fields = ['info_facilities','room_type_beds']

The constructor updates the internal forms property with instances of each sub-form:

    def __init__(self) :
        self.forms.update({ 'prop' : PropertyForm() })
        self.forms.update({ 'name' : NameForm() })
        self.forms.update({ 'info' : PropInfoForm() })
        self.forms.update({ 'contact' : ContactForm() })
        self.forms.update({ 'location' : LocationForm() })

It's also necessary to define a method that retrieves a specific sub-form:

    def getForm(self, key) :
        if key in self.forms :
            return self.forms[key]
        else :
            return None

We also...