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annotate email_list/forms.py @ 141:2db040e89285

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author Brian Neal <bgneal@gmail.com>
date Sun, 23 Mar 2014 18:00:38 -0500
parents 0a8942306b04
children
rev   line source
bgneal@51 1 """
bgneal@51 2 Forms for the email_list application.
bgneal@51 3
bgneal@51 4 """
bgneal@51 5 from django import forms
bgneal@51 6 from django.conf import settings
bgneal@51 7 from django.core.urlresolvers import reverse
bgneal@53 8 from django.core.mail import send_mail, send_mass_mail
bgneal@51 9 from django.template.loader import render_to_string
bgneal@51 10
bgneal@51 11 from email_list.models import Subscriber
bgneal@51 12
bgneal@51 13
bgneal@51 14 SUBSCRIBE_OPTS = [('sub', 'Subscribe'), ('unsub', 'Unsubscribe')]
bgneal@51 15
bgneal@51 16 ALREADY_SUBSCRIBED = "This email address is already subscribed."
bgneal@51 17 NOT_SUBSCRIBED = "This email address is not on our list."
bgneal@51 18
bgneal@51 19
bgneal@51 20 class SubscriberForm(forms.Form):
bgneal@101 21 name = forms.CharField(required=False,
bgneal@101 22 widget=forms.TextInput(attrs={
bgneal@101 23 'class': 'form-control',
bgneal@101 24 'placeholder': 'Your name (optional)'}))
bgneal@101 25 email = forms.EmailField(widget=forms.TextInput(attrs={
bgneal@101 26 'class': 'form-control',
bgneal@101 27 'type': 'email',
bgneal@101 28 'placeholder': 'Your email address'}))
bgneal@101 29 location = forms.CharField(required=False,
bgneal@101 30 widget=forms.TextInput(attrs={
bgneal@101 31 'class': 'form-control',
bgneal@101 32 'placeholder': 'City, State (optional)'}))
bgneal@101 33 option = forms.ChoiceField(choices=SUBSCRIBE_OPTS,
bgneal@101 34 widget=forms.Select(attrs={'class': 'form-control'}))
bgneal@51 35
bgneal@51 36 def clean(self):
bgneal@51 37 """
bgneal@51 38 This method ensures the appropriate action can be carried out and raises
bgneal@51 39 a validation error if not.
bgneal@51 40
bgneal@51 41 """
bgneal@101 42 cleaned_data = super(SubscriberForm, self).clean()
bgneal@101 43 email = cleaned_data.get('email')
bgneal@101 44 option = cleaned_data.get('option')
bgneal@51 45
bgneal@101 46 if not email or not option:
bgneal@101 47 return cleaned_data
bgneal@101 48
bgneal@101 49 if option == 'sub':
bgneal@51 50 # is the user already subscribed (active)?
bgneal@51 51 try:
bgneal@51 52 subscriber = Subscriber.objects.get(email=email)
bgneal@51 53 except Subscriber.DoesNotExist:
bgneal@51 54 subscriber = Subscriber(email=email,
bgneal@101 55 name=cleaned_data['name'],
bgneal@101 56 location=cleaned_data['location'])
bgneal@51 57 else:
bgneal@51 58 if subscriber.is_active():
bgneal@51 59 raise forms.ValidationError(ALREADY_SUBSCRIBED)
bgneal@51 60 else:
bgneal@51 61 # is the user already unsubscribed or not subscribed?
bgneal@51 62 try:
bgneal@51 63 subscriber = Subscriber.objects.get(email=email)
bgneal@51 64 except Subscriber.DoesNotExist:
bgneal@51 65 raise forms.ValidationError(NOT_SUBSCRIBED)
bgneal@51 66
bgneal@51 67 # save the subscriber away for a future process() call
bgneal@51 68 self.subscriber = subscriber
bgneal@51 69
bgneal@101 70 return cleaned_data
bgneal@51 71
bgneal@51 72 def is_subscribe(self):
bgneal@51 73 """
bgneal@51 74 This function can be called after an is_valid() call to determine if the
bgneal@51 75 request was for a subscribe or unsubscribe.
bgneal@51 76
bgneal@51 77 """
bgneal@51 78 return self.cleaned_data['option'] == 'sub'
bgneal@51 79
bgneal@51 80 def process(self):
bgneal@51 81 """
bgneal@51 82 Call this function if is_valid() returns True. It carries out the user's
bgneal@101 83 subscription request.
bgneal@51 84
bgneal@51 85 """
bgneal@51 86 if self.is_subscribe():
bgneal@51 87 self.subscriber.set_pending()
bgneal@51 88 else:
bgneal@51 89 self.subscriber.set_leaving()
bgneal@51 90
bgneal@51 91 self.subscriber.save()
bgneal@51 92 send_email(self.subscriber)
bgneal@51 93
bgneal@51 94
bgneal@53 95 class AdminEmailForm(forms.Form):
bgneal@53 96 subject = forms.CharField(max_length=255, required=True, label='Subject:',
bgneal@53 97 widget=forms.TextInput(attrs={'class': 'vTextField required',
bgneal@53 98 'size': '120'}))
bgneal@53 99 message = forms.CharField(label='Message:',
bgneal@53 100 widget=forms.Textarea(attrs={'class': 'vLargeTextField required'}))
bgneal@53 101
bgneal@53 102 def __init__(self, *args, **kwargs):
bgneal@53 103 initial = kwargs.pop('initial', {})
bgneal@53 104 if 'subject' not in initial:
bgneal@53 105 initial['subject'] = '[%s] ' % settings.BAND_CONFIG['BAND_NAME']
bgneal@53 106 kwargs['initial'] = initial
bgneal@53 107
bgneal@53 108 super(AdminEmailForm, self).__init__(*args, **kwargs)
bgneal@53 109
bgneal@53 110 def save(self):
bgneal@53 111 """
bgneal@53 112 Call this function if is_valid() to send the mass email.
bgneal@53 113 Returns the number of mails sent.
bgneal@53 114
bgneal@53 115 """
bgneal@53 116 subject = self.cleaned_data['subject']
bgneal@53 117 message = self.cleaned_data['message']
bgneal@53 118 return send_mail_to_subscribers(subject, message)
bgneal@53 119
bgneal@53 120
bgneal@51 121 def send_email(subscriber):
bgneal@51 122 """
bgneal@51 123 This function sends out the appropriate email for the given subscriber.
bgneal@51 124
bgneal@51 125 """
bgneal@51 126 config = settings.BAND_CONFIG
bgneal@51 127 band = config['BAND_NAME']
bgneal@51 128 from_email = config['BAND_EMAIL']
bgneal@51 129
bgneal@51 130 url = "http://%s%s" % (config['BAND_DOMAIN'],
bgneal@51 131 reverse('email_list-confirm', kwargs={'key': subscriber.key}))
bgneal@51 132
bgneal@51 133 if subscriber.is_pending():
bgneal@51 134 email_template = 'email_list/email_subscribe.txt'
bgneal@51 135 else:
bgneal@51 136 email_template = 'email_list/email_unsubscribe.txt'
bgneal@51 137
bgneal@51 138 msg = render_to_string(email_template, {
bgneal@101 139 'band': band,
bgneal@101 140 'url': url,
bgneal@51 141 'band_domain': config['BAND_DOMAIN'],
bgneal@51 142 })
bgneal@51 143
bgneal@51 144 subject = "[%s] Mailing List Confirmation" % band
bgneal@51 145
bgneal@51 146 send_mail(subject, msg, from_email, [subscriber.email])
bgneal@53 147
bgneal@53 148
bgneal@53 149 def send_mail_to_subscribers(subject, message):
bgneal@53 150 """
bgneal@53 151 Send an email to each mailing list subscriber with the given subject and
bgneal@53 152 message.
bgneal@53 153 Returns the number of messages sent.
bgneal@53 154
bgneal@53 155 """
bgneal@53 156 config = settings.BAND_CONFIG
bgneal@53 157 unsubscribe_url = "http://%s%s" % (config['BAND_DOMAIN'],
bgneal@53 158 reverse('email_list-main'))
bgneal@53 159
bgneal@53 160 msg = render_to_string('email_list/mailing_list.txt', {
bgneal@53 161 'band': config['BAND_NAME'],
bgneal@53 162 'unsubscribe_url': unsubscribe_url,
bgneal@53 163 'message': message,
bgneal@53 164 })
bgneal@53 165
bgneal@53 166 mail_data = [(subject, msg, config['BAND_EMAIL'], [subscriber]) for
bgneal@53 167 subscriber in Subscriber.objects.values_list('email', flat=True)]
bgneal@53 168
bgneal@53 169 send_mass_mail(mail_data)
bgneal@53 170 return len(mail_data)