sdi/forms.py
author nishanth
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from django import forms
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from sage_days.sdi.models import Registrant, TOPICS_CHOICES
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class RegisterForm(forms.ModelForm):
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    """ The form that is displayed to user.
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    """
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    topics_interested = forms.MultipleChoiceField(widget=forms.CheckboxSelectMultiple, choices=TOPICS_CHOICES, required=False)
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    class Meta:
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        model = Registrant
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    def clean_email(self):
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        """ See if the user has already registered using the email.
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        """
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        email = self.cleaned_data['email'].strip()
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        try:
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            Registrant.objects.get(email__iexact=email)
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            raise forms.ValidationError("This email is already registered. Did you register earlier??")
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        except Registrant.DoesNotExist:
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            return email
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    def clean_topics_interested(self):
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        """ Join the choices using PIPE character and store them.
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        """
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        topics = self.cleaned_data['topics_interested']
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        return "|".join(topics)
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class SearchForm(forms.Form):
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    """ Search form for filtering registrants.
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    """
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    topics_interested = forms.CharField(required=False, help_text=" Use numbers seperated by spaces and prefix a minus to exclude")
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    knowledge_of_python = forms.CharField(required=False, help_text=" Give single number from 1 to 5 or a range seperated by hyphen")
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    knowledge_of_sage = forms.CharField(required=False, help_text=" Give single number from 1 to 5 or a range seperated by hyphen")
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    likeliness_of_attending = forms.CharField(required=False, help_text=" Give single number from 1 to 5 or a range seperated by hyphen")
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    need_for_python_workshop = forms.BooleanField(required=False)
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    def clean_topics_interested(self):
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        """ split and return include list and exclude list
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        """
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        include_list = []
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        exclude_list = []
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        topics = self.cleaned_data['topics_interested']
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        for number in topics.split():
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            if number.startswith('-'):
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                exclude_list.append(number[1:])
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            else:
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                include_list.append(number)
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        return (include_list, exclude_list)
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    def clean_knowledge_of_python(self):
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        """ if two numbers are given take start and stop.
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        else take highest as default.
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        """
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        range_str = self.cleaned_data['knowledge_of_python'].strip()
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        if not range_str:
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            return ("","")
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        start_stop = range_str.split("-")
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        if len(start_stop) == 1:
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            if start_stop[0].isdigit():
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                return (start_stop[0], "")
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            else:
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                raise forms.ValidationError("Invalid range for knowledge of Python")
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        elif len(start_stop) == 2:
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            start, stop = start_stop
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            if start.isdigit() and stop.isdigit():
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                return (start, stop)
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            else:
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                 raise forms.ValidationError("Invalid range for knowledge of Python")
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        else:
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            raise forms.ValidationError("Invalid range for knowledge of Python")
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    def clean_knowledge_of_sage(self):
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        """ if two numbers are given take start and stop.
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        else take highest as default.
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        """
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        range_str = self.cleaned_data['knowledge_of_sage'].strip()
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        if not range_str:
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            return ("","")
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        start_stop = range_str.split("-")
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        if len(start_stop) == 1:
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            if start_stop[0].isdigit():
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                return (start_stop[0], "")
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            else:
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                raise forms.ValidationError("Invalid range for knowledge of Sage")
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        elif len(start_stop) == 2:
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            start, stop = start_stop
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            if start.isdigit() and stop.isdigit():
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                return (start, stop)
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            else:
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                 raise forms.ValidationError("Invalid range for knowledge of Sage")
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        else:
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            raise forms.ValidationError("Invalid range for knowledge of Sage")
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    def clean_likeliness_of_attending(self):
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        """ if two numbers are given take start and stop.
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        else take highest as default.
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        """
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        range_str = self.cleaned_data['likeliness_of_attending'].strip()
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        if not range_str:
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            return ("","")
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        start_stop = range_str.split("-")
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        if len(start_stop) == 1:
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            if start_stop[0].isdigit():
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                return (start_stop[0], "")
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            else:
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                raise forms.ValidationError("Invalid range for Likeliness of attending the workshop")
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        elif len(start_stop) == 2:
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            start, stop = start_stop
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            if start.isdigit() and stop.isdigit():
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                return (start, stop)
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            else:
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                 raise forms.ValidationError("Invalid range for Likeliness of attending the workshop")
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        else:
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            raise forms.ValidationError("Invalid range for Likeliness of attending the workshop")
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