forms.py
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from django import forms
from django.utils.translation import ugettext_lazy as _
from .models import News
from resubmit.widgets import ResubmitFileWidget
from os.path import join
from PIL import Image
import os
from amadeus import settings
from django.utils.html import strip_tags
class NewsForm(forms.ModelForm):
MAX_UPLOAD_SIZE = 5*1024*1024
#Cropping image
x = forms.FloatField(widget=forms.HiddenInput(),required=False)
y = forms.FloatField(widget=forms.HiddenInput(),required=False)
width = forms.FloatField(widget=forms.HiddenInput(),required=False)
height = forms.FloatField(widget=forms.HiddenInput(),required=False)
def save(self, commit=True):
super(NewsForm, self).save(commit=False)
self.deletepath = ""
x = self.cleaned_data.get('x')
y = self.cleaned_data.get('y')
w = self.cleaned_data.get('width')
h = self.cleaned_data.get('height')
if self.instance.image :
image = Image.open(self.instance.image)
if not x is None:
cropped_image = image.crop((x, y, w+x, h+y))
resized_image = cropped_image.resize((1200, 400), Image.ANTIALIAS)
folder_path = join(settings.MEDIA_ROOT, 'news')
#check if the folder already exists
if not os.path.isdir(folder_path):
os.makedirs(folder_path)
if ("news" not in self.instance.image.path):
self.deletepath = self.instance.image.path
resized_image.save(self.instance.image.path)
self.instance.save()
if (self.deletepath):
os.remove(self.deletepath)
return self.instance
class Meta:
model = News
fields = ['title','image','content']
widgets = {
'content': forms.Textarea,
'image': ResubmitFileWidget(attrs={'accept':'image/*'}),
}
def clean_title(self):
title = self.cleaned_data.get('title', '')
if title == '':
self._errors['name'] = [_('This field is required')]
return ValueError
return title
def clean_image(self):
image = self.cleaned_data.get('image', False)
if image:
if hasattr(image, '_size'):
if image._size > self.MAX_UPLOAD_SIZE:
self._errors['image'] = [_("The image is too large. It should have less than 5MB.")]
return ValueError
else:
self._errors['image'] = [_("This field is required.")]
return ValueError
return image
def clean_content(self):
content = self.cleaned_data.get('content', '')
cleaned_content = strip_tags(content)
if cleaned_content == '':
self._errors['content'] = [_('This field is required.')]
return ValueError
return content