vbmendes

from django import forms

from fields import DecimalInput

class ExampleForm(forms.Form):
    meu_campo = DeicmalInput()

vbmendes

def GetAdminAddURL(self, model_class=None, model_instance=None):
    # Se passar a classe, utiliza a classe, se passar a instancia
    # pega a classe dela.
    if model_class is None:
        model_class = model_instance.__class__
    from django.core import urlresolvers
    from django.contrib.contenttypes.models import ContentType
    content_type = ContentType.objects.get_for_model(model_class)
    return urlresolvers.reverse("admin:%s_%s_add" % (content_type.app_label,
        content_type.model))

vbmendes

from django.views.generic.simple import direct_to_template

from app1.models import Model1
from app2.models import Model2

def index(request):
    model1_objects = Model1.objects.all()[:3]
    try:
        model2_destaque = Model2.objects.all()[:1][0]
    except IndexError:

vbmendes

from django import forms

class Form1(forms.Form):
    
    arquivo = forms.FileField()

    def ler_conteudo_do_arquivo(self):
        return self.cleaned_data['arquivo'].read()

vbmendes

from django.template import Library

register = Library()

@register.filter
def readable_list(lista):
    lista = [unicode(item) for item in lista]
    try:
        return " e ".join(filter(None, [", ".join(lista[:-1]), lista[-1]]))
    except IndexError:

vbmendes

from django.db import connection

from agenda.models import Evento

Evento.objects.extra(
            select={
                'month': connection.ops.date_extract_sql('month', 'data'),
                'year': connection.ops.date_extract_sql('year', 'data'),
            }).values('month', 'year').distinct()

vbmendes

{% for evento in eventos %}
    {% ifchanged %}
        <h3>{{ evento.data|date:"%F/%Y" }}</h3>
    {% endifchanged %}
    {{ evento }}
{% endfor %}

vbmendes

def get_first_object_or_none(queryset):
    try:
        return queryset[:1][0]
    except IndexError:
        return None

vbmendes

import os, uuid
from django.conf import settings
from django.db import models
from django.utils.encoding import smart_unicode, smart_str

class BannerFileField(models.FileField):
    def pre_save(self, model_instance, add):
        file = super(BannerFileField, self).pre_save(model_instance, add)
        
        if not add:

vbmendes

class ProjectForm(ModelForm)
    ....
    def clean_name(self):
        user = self.cleaned_data['user']
        queryset = User.objecs.filter(user.id, active=True)
        if self.instance and self.instance.user:
            queryset = queryset.exclude(pk = self.instance.user.pk)
        if queryset.count():
            raise forms.ValidationError(_("This man has been already assign to a partner"))
        return user