src/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
   9 from newsletter.forms import NewsletterForm
  10 from .models import Funding
  11 from .widgets import PerksAmountWidget
  12 from . import app_settings
  13
  14
  15 class FundingForm(NewsletterForm):
  16     required_css_class = 'required'
  17
  18     amount = forms.DecimalField(label=_("Amount"), decimal_places=2, widget=PerksAmountWidget())
  19     name = forms.CharField(
  20         label=_("Name"), required=False, help_text=_("Optional name for public list of contributors"))
  21     email = forms.EmailField(
  22         label=_("Contact e-mail"),
  23         help_text=_(
  24             "We'll use it to contact you about the <strong>details needed for your perks</strong>,<br/>"
  25             "and to send you updates about your payment and the fundraiser status (which you can always turn off).<br/>"
  26             "Your e-mail won't be publicised."), required=False)
  27
  28     def __init__(self, offer, *args, **kwargs):
  29         self.offer = offer
  30         super(FundingForm, self).__init__(*args, **kwargs)
  31         self.fields['amount'].widget.form_instance = self
  32
  33     def clean_amount(self):
  34         if self.cleaned_data['amount'] < app_settings.MIN_AMOUNT:
  35             min_amount = app_settings.MIN_AMOUNT
  36             if isinstance(min_amount, float):
  37                 min_amount = formats.number_format(min_amount, 2)
  38             raise forms.ValidationError(
  39                 ugettext("The minimum amount is %(amount)s PLN.") % {
  40                     'amount': min_amount})
  41         return self.cleaned_data['amount']
  42
  43     def clean(self):
  44         if not self.offer.is_current():
  45             raise forms.ValidationError(ugettext("This offer is out of date."))
  46         return self.cleaned_data
  47
  48     def save(self):
  49         super(FundingForm, self).save()
  50         funding = Funding.objects.create(
  51             offer=self.offer,
  52             name=self.cleaned_data['name'],
  53             email=self.cleaned_data['email'],
  54             amount=self.cleaned_data['amount'],
  55             language_code=get_language(),
  56         )
  57         funding.perks = funding.offer.get_perks(funding.amount)
  58         return funding