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comparison email_list/forms.py @ 71:e2868ad47a1e

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For Django 1.4, using the new manage.py.
author Brian Neal <bgneal@gmail.com>
date Sat, 14 Apr 2012 16:40:29 -0500
parents madeira/email_list/forms.py@9b40a8d300a4
children 0a8942306b04
comparison
equal deleted inserted replaced
70:f26cdda0ad8b 71:e2868ad47a1e
1 """
2 Forms for the email_list application.
3
4 """
5 from django import forms
6 from django.conf import settings
7 from django.core.urlresolvers import reverse
8 from django.core.mail import send_mail, send_mass_mail
9 from django.template.loader import render_to_string
10
11 from email_list.models import Subscriber
12
13
14 SUBSCRIBE_OPTS = [('sub', 'Subscribe'), ('unsub', 'Unsubscribe')]
15
16 ALREADY_SUBSCRIBED = "This email address is already subscribed."
17 NOT_SUBSCRIBED = "This email address is not on our list."
18
19
20 class SubscriberForm(forms.Form):
21 name = forms.CharField(max_length=64, required=False)
22 email = forms.EmailField()
23 location = forms.CharField(max_length=64, required=False)
24 option = forms.ChoiceField(choices=SUBSCRIBE_OPTS)
25
26 def clean(self):
27 """
28 This method ensures the appropriate action can be carried out and raises
29 a validation error if not.
30
31 """
32 email = self.cleaned_data['email']
33
34 if self.cleaned_data['option'] == 'sub':
35 # is the user already subscribed (active)?
36 try:
37 subscriber = Subscriber.objects.get(email=email)
38 except Subscriber.DoesNotExist:
39 subscriber = Subscriber(email=email,
40 name=self.cleaned_data['name'],
41 location=self.cleaned_data['location'])
42 else:
43 if subscriber.is_active():
44 raise forms.ValidationError(ALREADY_SUBSCRIBED)
45 else:
46 # is the user already unsubscribed or not subscribed?
47 try:
48 subscriber = Subscriber.objects.get(email=email)
49 except Subscriber.DoesNotExist:
50 raise forms.ValidationError(NOT_SUBSCRIBED)
51
52 # save the subscriber away for a future process() call
53 self.subscriber = subscriber
54
55 return self.cleaned_data
56
57 def is_subscribe(self):
58 """
59 This function can be called after an is_valid() call to determine if the
60 request was for a subscribe or unsubscribe.
61
62 """
63 return self.cleaned_data['option'] == 'sub'
64
65 def process(self):
66 """
67 Call this function if is_valid() returns True. It carries out the user's
68 subscription request.
69
70 """
71 if self.is_subscribe():
72 self.subscriber.set_pending()
73 else:
74 self.subscriber.set_leaving()
75
76 self.subscriber.save()
77 send_email(self.subscriber)
78
79
80 class AdminEmailForm(forms.Form):
81 subject = forms.CharField(max_length=255, required=True, label='Subject:',
82 widget=forms.TextInput(attrs={'class': 'vTextField required',
83 'size': '120'}))
84 message = forms.CharField(label='Message:',
85 widget=forms.Textarea(attrs={'class': 'vLargeTextField required'}))
86
87 def __init__(self, *args, **kwargs):
88 initial = kwargs.pop('initial', {})
89 if 'subject' not in initial:
90 initial['subject'] = '[%s] ' % settings.BAND_CONFIG['BAND_NAME']
91 kwargs['initial'] = initial
92
93 super(AdminEmailForm, self).__init__(*args, **kwargs)
94
95 def save(self):
96 """
97 Call this function if is_valid() to send the mass email.
98 Returns the number of mails sent.
99
100 """
101 subject = self.cleaned_data['subject']
102 message = self.cleaned_data['message']
103 return send_mail_to_subscribers(subject, message)
104
105
106 def send_email(subscriber):
107 """
108 This function sends out the appropriate email for the given subscriber.
109
110 """
111 config = settings.BAND_CONFIG
112 band = config['BAND_NAME']
113 from_email = config['BAND_EMAIL']
114
115 url = "http://%s%s" % (config['BAND_DOMAIN'],
116 reverse('email_list-confirm', kwargs={'key': subscriber.key}))
117
118 if subscriber.is_pending():
119 email_template = 'email_list/email_subscribe.txt'
120 else:
121 email_template = 'email_list/email_unsubscribe.txt'
122
123 msg = render_to_string(email_template, {
124 'band': band,
125 'url': url,
126 'band_domain': config['BAND_DOMAIN'],
127 })
128
129 subject = "[%s] Mailing List Confirmation" % band
130
131 send_mail(subject, msg, from_email, [subscriber.email])
132
133
134 def send_mail_to_subscribers(subject, message):
135 """
136 Send an email to each mailing list subscriber with the given subject and
137 message.
138 Returns the number of messages sent.
139
140 """
141 config = settings.BAND_CONFIG
142 unsubscribe_url = "http://%s%s" % (config['BAND_DOMAIN'],
143 reverse('email_list-main'))
144
145 msg = render_to_string('email_list/mailing_list.txt', {
146 'band': config['BAND_NAME'],
147 'unsubscribe_url': unsubscribe_url,
148 'message': message,
149 })
150
151 mail_data = [(subject, msg, config['BAND_EMAIL'], [subscriber]) for
152 subscriber in Subscriber.objects.values_list('email', flat=True)]
153
154 send_mass_mail(mail_data)
155 return len(mail_data)