apps/funding/forms.py

   1 # -*- coding: utf-8 -*-
   2 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
   3 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
   4 #
   5 from django import forms
   6 from django.utils import formats
   7 from django.utils.translation import ugettext_lazy as _, ugettext, get_language
   8 from .models import Funding
   9 from .widgets import PerksAmountWidget
  10 from . import app_settings
  11
  12
  13 class FundingForm(forms.Form):
  14     required_css_class = 'required'
  15
  16     amount = forms.DecimalField(label=_("Amount"), decimal_places=2,
  17         widget=PerksAmountWidget())
  18     name = forms.CharField(label=_("Name"), required=False,
  19         help_text=_("Optional name for public list of contributors"))
  20     email = forms.EmailField(label=_("Contact e-mail"),
  21         help_text=_("We'll use it to contact you about the <strong>details needed for your perks</strong>,<br/>"
  22             "and to send you updates about your payment and the fundraiser status (which you can always turn off).<br/>"
  23             "Your e-mail won't be publicised."), required=False)
  24
  25     def __init__(self, offer, *args, **kwargs):
  26         self.offer = offer
  27         super(FundingForm, self).__init__(*args, **kwargs)
  28         self.fields['amount'].widget.form_instance = self
  29
  30     def clean_amount(self):
  31         if self.cleaned_data['amount'] < app_settings.MIN_AMOUNT:
  32             min_amount = app_settings.MIN_AMOUNT
  33             if isinstance(min_amount, float):
  34                 min_amount = formats.number_format(min_amount, 2)
  35             raise forms.ValidationError(
  36                 ugettext("The minimum amount is %(amount)s PLN.") % {
  37                     'amount': min_amount})
  38         return self.cleaned_data['amount']
  39
  40     def clean(self):
  41         if not self.offer.is_current():
  42             raise forms.ValidationError(ugettext("This offer is out of date."))
  43         return self.cleaned_data
  44
  45     def save(self):
  46         funding = Funding.objects.create(
  47             offer=self.offer,
  48             name=self.cleaned_data['name'],
  49             email=self.cleaned_data['email'],
  50             amount=self.cleaned_data['amount'],
  51             language_code=get_language(),
  52         )
  53         funding.perks = funding.offer.get_perks(funding.amount)
  54         return funding
  55