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annotate gpp/bio/forms.py @ 6:b6263ac72052

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Use DRY principle to manage third party javascript libraries. Created script_tags template tags to generate the correct link and script tags for 3rd party libraries. The settings.py file is the only place where the full path name is specified.
author Brian Neal <bgneal@gmail.com>
date Sat, 11 Apr 2009 22:50:56 +0000
parents dbd703f7d63a
children f408971657b9
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 }))
gremmie@1 33 website_1 = forms.URLField(required=False, widget=forms.TextInput(attrs={'size' : 64 }))
gremmie@1 34 website_2 = forms.URLField(required=False, widget=forms.TextInput(attrs={'size' : 64 }))
gremmie@1 35 website_3 = forms.URLField(required=False, widget=forms.TextInput(attrs={'size' : 64 }))
gremmie@1 36
gremmie@1 37 class Meta:
gremmie@1 38 model = UserProfile
gremmie@1 39 exclude = ('user', 'avatar', 'profile_html', 'signature_html')
gremmie@1 40
gremmie@1 41 class Media:
gremmie@1 42 css = {
bgneal@6 43 'all': settings.GPP_THIRD_PARTY_CSS['markitup'] + \
bgneal@6 44 settings.GPP_THIRD_PARTY_CSS['jquery-ui']
gremmie@1 45 }
bgneal@6 46 js = settings.GPP_THIRD_PARTY_JS['jquery'] + \
bgneal@6 47 settings.GPP_THIRD_PARTY_JS['markitup'] + \
bgneal@6 48 settings.GPP_THIRD_PARTY_JS['jquery-ui'] + \
bgneal@6 49 ('js/bio.js', )
gremmie@1 50
gremmie@1 51
gremmie@1 52 def get_image(file):
gremmie@1 53 """
gremmie@1 54 Returns a PIL Image from the supplied file.
gremmie@1 55 Throws ValidationError if the file does not parse as an image file.
gremmie@1 56 """
gremmie@1 57 parser = ImageFile.Parser()
gremmie@1 58 for chunk in file.chunks():
gremmie@1 59 parser.feed(chunk)
gremmie@1 60 try:
gremmie@1 61 image = parser.close()
gremmie@1 62 return image
gremmie@1 63 except IOError:
gremmie@1 64 pass
gremmie@1 65 raise forms.ValidationError("Upload a valid image. " +
gremmie@1 66 "The file you uploaded was either not an image or a corrupted image.")
gremmie@1 67
gremmie@1 68
gremmie@1 69 def scale_image(image, size):
gremmie@1 70 """Scales an image file if necessary."""
gremmie@1 71
gremmie@1 72 # don't upscale
gremmie@1 73 if (size, size) >= image.size:
gremmie@1 74 return image
gremmie@1 75
gremmie@1 76 (w, h) = image.size
gremmie@1 77 if w > h:
gremmie@1 78 diff = (w - h) / 2
gremmie@1 79 image = image.crop((diff, 0, w - diff, h))
gremmie@1 80 elif h > w:
gremmie@1 81 diff = (h - w) / 2
gremmie@1 82 image = image.crop((0, diff, w, h - diff))
gremmie@1 83 image = image.resize((size, size), Image.ANTIALIAS)
gremmie@1 84 return image
gremmie@1 85
gremmie@1 86
gremmie@1 87 class UploadAvatarForm(forms.Form):
gremmie@1 88 """Form used to change a user's avatar"""
gremmie@1 89 avatar_file = forms.ImageField(required=False)
gremmie@1 90 image = None
gremmie@1 91
gremmie@1 92 def clean_avatar_file(self):
gremmie@1 93 file = self.cleaned_data['avatar_file']
gremmie@1 94 if file is not None:
gremmie@1 95 if file.size > settings.MAX_AVATAR_SIZE_BYTES:
gremmie@1 96 raise forms.ValidationError("Please upload a file smaller than %s bytes." % \
gremmie@1 97 settings.MAX_AVATAR_SIZE)
gremmie@1 98 self.image = get_image(file)
gremmie@1 99 self.format = self.image.format
gremmie@1 100 return file
gremmie@1 101
gremmie@1 102 def get_file(self):
gremmie@1 103 if self.image is not None:
gremmie@1 104 self.image = scale_image(self.image, settings.MAX_AVATAR_SIZE_PIXELS)
gremmie@1 105 s = StringIO()
gremmie@1 106 self.image.save(s, self.format)
gremmie@1 107 return ContentFile(s.getvalue())
gremmie@1 108 return None
gremmie@1 109
gremmie@1 110 def get_filename(self):
gremmie@1 111 return self.cleaned_data['avatar_file'].name
gremmie@1 112
gremmie@1 113 # vim: ts=4 sw=4