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1 """
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2 Forms for the messages application.
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3 """
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4
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5 from django import forms
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6 from django.contrib.auth.models import User
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7 from django.conf import settings
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8 from django.contrib.sites.models import Site
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9 from django.core.urlresolvers import reverse
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10 from django.template.loader import render_to_string
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11
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12 from core.functions import send_mail
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13 from core.widgets import AutoCompleteUserInput
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14 from messages.models import Message
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15 from messages.models import Options
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16 from messages import MSG_BOX_LIMIT
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17
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18
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19 # Maximum size of a private message in characters
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20 MESSAGE_MAX = getattr(settings, 'MESSAGES_MAX_SIZE', 8192)
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21
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22
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23 class ComposeForm(forms.Form):
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24 """
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25 This form is used to compose private messages.
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26 """
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27 receiver = forms.CharField(label='To',
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28 max_length=30,
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29 widget=AutoCompleteUserInput())
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30 subject = forms.CharField(max_length=120, widget=forms.TextInput(attrs={'size': 52}))
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31 message = forms.CharField(widget=forms.Textarea(attrs={'class': 'markItUp smileyTarget'}))
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32 attach_signature = forms.BooleanField(label='Attach Signature?', required=False)
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33
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34 def __init__(self, user, *args, **kwargs):
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35 forms.Form.__init__(self, *args, **kwargs)
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36 self.user = user
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37 options = Options.objects.for_user(user)
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38 self.fields['attach_signature'].initial = options.attach_signature
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39
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40 def clean_receiver(self):
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41 receiver = self.cleaned_data['receiver']
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42 try:
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43 self.rcvr_user = User.objects.get(username=receiver)
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44 except User.DoesNotExist:
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45 raise forms.ValidationError("That username does not exist.")
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46 if self.user == self.rcvr_user:
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47 raise forms.ValidationError("You can't send a message to yourself.")
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48 return receiver
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49
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50 def clean_message(self):
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51 msg = self.cleaned_data['message']
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52 if len(msg) > MESSAGE_MAX:
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53 raise forms.ValidationError("Your message is too long. Please trim some text.")
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54 return msg
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55
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56 def clean(self):
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57 rcvr = self.cleaned_data.get('receiver')
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58 subject = self.cleaned_data.get('subject')
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59 message = self.cleaned_data.get('message')
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60
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61 if rcvr and subject and message:
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62 # Can we send a message? Is our outbox full?
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63
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64 count = Message.objects.outbox(self.user).count()
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65 if count >= MSG_BOX_LIMIT:
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66 raise forms.ValidationError(
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67 "Your outbox is full. Please delete some messages.")
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68
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69 # Is the receiver's inbox full?
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70 count = Message.objects.inbox(self.rcvr_user).count()
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71 if count >= MSG_BOX_LIMIT:
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72 raise forms.ValidationError(
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73 "Sorry, %s's inbox is full. This message cannot be sent." %
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74 self.rcvr_user.username)
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75
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76 return self.cleaned_data
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77
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78 def save(self, parent_msg=None):
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79 sender = self.user
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80 receiver = self.rcvr_user
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81 subject = self.cleaned_data['subject']
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82 message = self.cleaned_data['message']
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83 attach_signature = self.cleaned_data['attach_signature']
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84
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85 new_msg = Message(
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86 sender=sender,
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87 receiver=receiver,
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88 subject=subject,
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89 message=message,
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90 signature_attached=attach_signature,
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91 )
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92 new_msg.save()
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93 if parent_msg is not None:
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94 parent_msg.reply_date = new_msg.send_date
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95 parent_msg.save()
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96
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97 receiver_opts = Options.objects.for_user(receiver)
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98 if receiver_opts.notify_email:
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99 notify_receiver(new_msg)
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100
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101 class Media:
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102 css = {
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103 'all': (settings.GPP_THIRD_PARTY_CSS['markitup'] +
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104 settings.GPP_THIRD_PARTY_CSS['jquery-ui'])
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105 }
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106 js = (settings.GPP_THIRD_PARTY_JS['markitup'] +
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107 settings.GPP_THIRD_PARTY_JS['jquery-ui'])
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108
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109
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110 class OptionsForm(forms.ModelForm):
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111 class Meta:
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112 model = Options
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113 fields = ['attach_signature', 'notify_email']
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114
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115
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116 def notify_receiver(new_msg):
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117 """
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118 This function creates the notification email to notify a user of
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119 a new private message.
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120 """
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121 site = Site.objects.get_current()
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122
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123 email_body = render_to_string('messages/notification_email.txt', {
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124 'site': site,
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125 'msg': new_msg,
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126 'options_url': reverse('messages-options_tab'),
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127 })
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128
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129 subject = 'New private message for %s at %s' % (new_msg.receiver.username, site.name)
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130 from_email = settings.GPP_NO_REPLY_EMAIL + '@' + site.domain
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131 send_mail(subject, email_body, from_email, [new_msg.receiver.email])
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