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annotate gpp/bio/forms.py @ 108:80ab249d1adc

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author Brian Neal <bgneal@gmail.com>
date Sat, 26 Sep 2009 03:55:50 +0000
parents c0d3b09c9b95
children f8f4514b806a
rev   line source
gremmie@1 1 """
gremmie@1 2 This file contains the forms used by the bio application.
gremmie@1 3 """
gremmie@1 4 from PIL import ImageFile
gremmie@1 5 from PIL import Image
gremmie@1 6
gremmie@1 7 try:
gremmie@1 8 from cStringIO import StringIO
gremmie@1 9 except:
gremmie@1 10 from StringIO import StringIO
gremmie@1 11
gremmie@1 12 from django import forms
gremmie@1 13 from django.conf import settings
gremmie@1 14 from django.core.files.base import ContentFile
gremmie@1 15 from django.contrib.auth.models import User
gremmie@1 16
gremmie@1 17 from bio.models import UserProfile
gremmie@1 18
gremmie@1 19
gremmie@1 20 class EditUserForm(forms.ModelForm):
gremmie@1 21 """Form for editing the fields of the User model."""
gremmie@1 22 email = forms.EmailField(label='Email', required=True)
gremmie@1 23 class Meta:
gremmie@1 24 model = User
gremmie@1 25 fields = ('first_name', 'last_name', 'email')
gremmie@1 26
gremmie@1 27
gremmie@1 28 class EditUserProfileForm(forms.ModelForm):
gremmie@1 29 """Form for editing the fields of the UserProfile model."""
gremmie@1 30 location = forms.CharField(required=False, widget=forms.TextInput(attrs={'size' : 64 }))
gremmie@1 31 occupation = forms.CharField(required=False, widget=forms.TextInput(attrs={'size' : 64 }))
gremmie@1 32 interests = forms.CharField(required=False, widget=forms.TextInput(attrs={'size' : 64 }))
bgneal@70 33 time_zone = forms.CharField(required=False, widget=forms.HiddenInput())
gremmie@1 34
gremmie@1 35 class Meta:
gremmie@1 36 model = UserProfile
gremmie@1 37 exclude = ('user', 'avatar', 'profile_html', 'signature_html')
gremmie@1 38
gremmie@1 39 class Media:
gremmie@1 40 css = {
bgneal@6 41 'all': settings.GPP_THIRD_PARTY_CSS['markitup'] + \
bgneal@6 42 settings.GPP_THIRD_PARTY_CSS['jquery-ui']
gremmie@1 43 }
bgneal@12 44 js = settings.GPP_THIRD_PARTY_JS['markitup'] + \
bgneal@6 45 settings.GPP_THIRD_PARTY_JS['jquery-ui'] + \
bgneal@70 46 ('js/bio.js', 'js/timezone.js')
gremmie@1 47
gremmie@1 48
gremmie@1 49 def get_image(file):
gremmie@1 50 """
gremmie@1 51 Returns a PIL Image from the supplied file.
gremmie@1 52 Throws ValidationError if the file does not parse as an image file.
gremmie@1 53 """
gremmie@1 54 parser = ImageFile.Parser()
gremmie@1 55 for chunk in file.chunks():
gremmie@1 56 parser.feed(chunk)
gremmie@1 57 try:
gremmie@1 58 image = parser.close()
gremmie@1 59 return image
gremmie@1 60 except IOError:
gremmie@1 61 pass
gremmie@1 62 raise forms.ValidationError("Upload a valid image. " +
gremmie@1 63 "The file you uploaded was either not an image or a corrupted image.")
gremmie@1 64
gremmie@1 65
gremmie@1 66 def scale_image(image, size):
gremmie@1 67 """Scales an image file if necessary."""
gremmie@1 68
gremmie@1 69 # don't upscale
gremmie@1 70 if (size, size) >= image.size:
gremmie@1 71 return image
gremmie@1 72
gremmie@1 73 (w, h) = image.size
gremmie@1 74 if w > h:
gremmie@1 75 diff = (w - h) / 2
gremmie@1 76 image = image.crop((diff, 0, w - diff, h))
gremmie@1 77 elif h > w:
gremmie@1 78 diff = (h - w) / 2
gremmie@1 79 image = image.crop((0, diff, w, h - diff))
gremmie@1 80 image = image.resize((size, size), Image.ANTIALIAS)
gremmie@1 81 return image
gremmie@1 82
gremmie@1 83
gremmie@1 84 class UploadAvatarForm(forms.Form):
gremmie@1 85 """Form used to change a user's avatar"""
gremmie@1 86 avatar_file = forms.ImageField(required=False)
gremmie@1 87 image = None
gremmie@1 88
gremmie@1 89 def clean_avatar_file(self):
gremmie@1 90 file = self.cleaned_data['avatar_file']
gremmie@1 91 if file is not None:
gremmie@1 92 if file.size > settings.MAX_AVATAR_SIZE_BYTES:
gremmie@1 93 raise forms.ValidationError("Please upload a file smaller than %s bytes." % \
gremmie@1 94 settings.MAX_AVATAR_SIZE)
gremmie@1 95 self.image = get_image(file)
gremmie@1 96 self.format = self.image.format
gremmie@1 97 return file
gremmie@1 98
gremmie@1 99 def get_file(self):
gremmie@1 100 if self.image is not None:
gremmie@1 101 self.image = scale_image(self.image, settings.MAX_AVATAR_SIZE_PIXELS)
gremmie@1 102 s = StringIO()
gremmie@1 103 self.image.save(s, self.format)
gremmie@1 104 return ContentFile(s.getvalue())
gremmie@1 105 return None
gremmie@1 106
gremmie@1 107 def get_filename(self):
gremmie@1 108 return self.cleaned_data['avatar_file'].name
gremmie@1 109