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1 """
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2 Forms for the comments application.
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3 """
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4 import datetime
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5 from django import forms
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6 from django.conf import settings
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7 from django.contrib.contenttypes.models import ContentType
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8
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9 from comments.models import Comment
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10 from core.html import ImageCheckError
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11 from core.html import image_check
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12 from core.markup import site_markup
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13
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14
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15 COMMENT_MAX_LENGTH = getattr(settings, 'COMMENT_MAX_LENGTH', 3000)
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16
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17 class CommentForm(forms.Form):
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18 comment = forms.CharField(label='',
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19 min_length=1,
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20 max_length=COMMENT_MAX_LENGTH,
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21 widget=forms.Textarea(attrs={'class': 'markItUp smileyTarget'}))
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22 content_type = forms.CharField(widget=forms.HiddenInput)
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23 object_pk = forms.CharField(widget=forms.HiddenInput)
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24
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25 def __init__(self, target_object, data=None, initial=None):
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26 self.target_object = target_object
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27 if initial is None:
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28 initial = {}
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29 initial.update({
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30 'content_type': str(self.target_object._meta),
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31 'object_pk': str(self.target_object.pk),
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32 })
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33 super(CommentForm, self).__init__(data=data, initial=initial)
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34
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35 def get_comment_object(self, user, ip_address):
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36 """
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37 Return a new (unsaved) comment object based on the information in this
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38 form. Assumes that the form is already validated and will throw a
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39 ValueError if not.
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40 """
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41 if not self.is_valid():
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42 raise ValueError("get_comment_object may only be called on valid forms")
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43
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44 new = Comment(
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45 content_type = ContentType.objects.get_for_model(self.target_object),
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46 object_id = self.target_object.pk,
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47 user = user,
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48 comment = self.cleaned_data["comment"],
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49 ip_address = ip_address,
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50 is_public = True,
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51 is_removed = False,
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52 )
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53
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54 # Check that this comment isn't duplicate. (Sometimes people post comments
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55 # twice by mistake.) If it is, fail silently by returning the old comment.
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56 today = datetime.date.today()
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57 possible_duplicates = Comment.objects.filter(
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58 content_type = new.content_type,
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59 object_id = new.object_id,
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60 user = new.user,
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61 creation_date__year = today.year,
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62 creation_date__month = today.month,
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63 creation_date__day = today.day,
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64 )
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65 for old in possible_duplicates:
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66 if old.comment == new.comment:
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67 return old
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68
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69 return new
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70
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71 def clean_comment(self):
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72 comment = self.cleaned_data['comment']
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73 self.comment_html = None
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74 if comment:
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75 self.comment_html = site_markup(comment)
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76 try:
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77 image_check(self.comment_html)
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78 except ImageCheckError as ex:
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79 raise forms.ValidationError(str(ex))
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80
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81 return comment
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82
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83 class Media:
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84 css = {
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85 'all': (settings.GPP_THIRD_PARTY_CSS['markitup'] +
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86 settings.GPP_THIRD_PARTY_CSS['jquery-ui']),
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87 }
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88 js = (settings.GPP_THIRD_PARTY_JS['markitup'] +
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89 settings.GPP_THIRD_PARTY_JS['jquery-ui'] +
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90 ['js/comments.js'])
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