forms.py
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"""
Copyright 2016, 2017 UFPE - Universidade Federal de Pernambuco
Este arquivo é parte do programa Amadeus Sistema de Gestão de Aprendizagem, ou simplesmente Amadeus LMS
O Amadeus LMS é um software livre; você pode redistribui-lo e/ou modifica-lo dentro dos termos da Licença Pública Geral GNU como publicada pela Fundação do Software Livre (FSF); na versão 2 da Licença.
Este programa é distribuído na esperança que possa ser útil, mas SEM NENHUMA GARANTIA; sem uma garantia implícita de ADEQUAÇÃO a qualquer MERCADO ou APLICAÇÃO EM PARTICULAR. Veja a Licença Pública Geral GNU para maiores detalhes.
Você deve ter recebido uma cópia da Licença Pública Geral GNU, sob o título "LICENSE", junto com este programa, se não, escreva para a Fundação do Software Livre (FSF) Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
"""
# coding=utf-8
from django import forms
from django.utils.translation import ugettext_lazy as _
from django.utils.html import strip_tags
from subjects.models import Tag
from subjects.forms import ParticipantsMultipleChoiceField
from .models import Webpage
from resubmit.widgets import ResubmitFileWidget
class WebpageForm(forms.ModelForm):
subject = None
students = ParticipantsMultipleChoiceField(queryset = None, required = False)
def __init__(self, *args, **kwargs):
super(WebpageForm, self).__init__(*args, **kwargs)
self.subject = kwargs['initial'].get('subject', None)
if self.instance.id:
self.subject = self.instance.topic.subject
self.initial['tags'] = ", ".join(self.instance.tags.all().values_list("name", flat = True))
self.fields['students'].queryset = self.subject.students.all()
self.fields['groups'].queryset = self.subject.group_subject.all()
tags = forms.CharField(label = _('Tags'), required = False)
class Meta:
model = Webpage
fields = ['name', 'content', 'brief_description', 'all_students', 'students', 'groups', 'show_window', 'visible']
labels = {
'name': _('Webpage name'),
'content': _('Webpage content'),
}
widgets = {
'content': forms.Textarea,
'brief_description': forms.Textarea,
'students': forms.SelectMultiple,
'groups': forms.SelectMultiple,
}
def clean_name(self):
name = self.cleaned_data.get('name', '')
topics = self.subject.topic_subject.all()
for topic in topics:
if self.instance.id:
same_name = topic.resource_topic.filter(name__unaccent__iexact = name).exclude(id = self.instance.id).count()
else:
same_name = topic.resource_topic.filter(name__unaccent__iexact = name).count()
if same_name > 0:
self._errors['name'] = [_('This subject already has a webpage with this name')]
return ValueError
return name
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
def save(self, commit = True):
super(WebpageForm, self).save(commit = True)
self.instance.save()
previous_tags = self.instance.tags.all()
tags = self.cleaned_data['tags'].split(",")
#Excluding unwanted tags
for prev in previous_tags:
if not prev.name in tags:
self.instance.tags.remove(prev)
for tag in tags:
tag = tag.strip()
exist = Tag.objects.filter(name = tag).exists()
if exist:
new_tag = Tag.objects.get(name = tag)
else:
new_tag = Tag.objects.create(name = tag)
if not new_tag in self.instance.tags.all():
self.instance.tags.add(new_tag)
return self.instance
class FormModalMessage(forms.Form):
MAX_UPLOAD_SIZE = 5*1024*1024
comment = forms.CharField(widget=forms.Textarea,label=_("Message"))
image = forms.FileField(widget=ResubmitFileWidget(attrs={'accept':'image/*'}),required=False)
def clean_comment(self):
comment = self.cleaned_data.get('comment', '')
cleaned_comment = strip_tags(comment)
if cleaned_comment == '':
self._errors['comment'] = [_('This field is required.')]
return ValueError
return comment
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
return image