class Image(models.Model):
post = models.ForeignKey(Post, related_name='images', verbose_name='文章')
is_cover = models.BooleanField('封面照片', default=False)
caption = models.CharField('註解', blank=True, max_length=50)
tag = models.CharField('書籤位置', blank=True, max_length=50)
select_text = models.TextField('單品敘述', blank=True, null=True)
img = fields.ThumbnailerImageField('圖片',
upload_to=post_image_path,
null=True,
blank=True,
help_text='橫幅照片尺寸為 640x450')
video_url = models.CharField('Youtube 網址',
max_length=255,
blank=True,
default='')
video_id = models.CharField('Youtube ID',
max_length=40,
editable=False,
blank=True,
default='')
def save(self, *args, **kwargs):
if self.video_url:
url_obj = urlparse.urlparse(self.video_url)
if url_obj.netloc.lower() == 'www.youtube.com':
self.video_id = urlparse.parse_qs(url_obj.query)['v'][0]
elif url_obj.netloc.lower() == 'youtu.be':
self.video_id = url_obj.path.strip('/')
else:
if self.video_id:
self.video_id = ''
super(Image, self).save(*args, **kwargs)
def __unicode__(self):
return '{post} - {id}'.format(post=self.post, id=self.id)
def to_json(self):
return dict(id=self.id,
cover=self.is_cover,
caption=self.caption,
tag=self.tag,
img=self.img.url if self.img else '',
video_id=self.video_id)
def generate_video_embed(self, width=600, height=450):
return '<iframe width="{width}" height="{height}" ' \
'src="https://www.youtube.com/embed/{video_id}" ' \
'frameborder="0" allowfullscreen></iframe>'.format(
width=width,
height=height,
video_id=self.video_id
)
class Seminar(models.Model): # Seminar
author = models.ForeignKey('auth.User', on_delete=models.CASCADE)
title = models.CharField(max_length=200)
text = models.TextField()
thumbnail = fields.ThumbnailerImageField(
upload_to='thumb',
default='devkor_logo_mini.png',
)
created_date = models.DateTimeField(default=timezone.now)
file = models.FileField(upload_to='file', default=None)
def __str__(self):
return self.title
class Photo(models.Model):
album = models.ForeignKey(Album, verbose_name='相簿', related_name='photos')
caption = models.CharField('註解', max_length=20, blank=True)
img = fields.ThumbnailerImageField('圖片', upload_to=album_image_path)
class Dispositivo(models.Model):
"""Cualquier elemento almacenado en la base de datos de inventario que puede ser entregado a una escuela.
No debe existir una instancia de este modelo sin un objeto heredado del mismo.
"""
id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
triage = models.SlugField(unique=True, blank=True, editable=False)
tipo = models.ForeignKey(DispositivoTipo, on_delete=models.CASCADE)
entrada = models.ForeignKey(Entrada,
on_delete=models.PROTECT,
related_name='dispositivos')
estado = models.ForeignKey(DispositivoEstado,
on_delete=models.CASCADE,
null=True,
editable=False)
etapa = models.ForeignKey(DispositivoEtapa,
on_delete=models.PROTECT,
null=True,
editable=False)
marca = models.ForeignKey(DispositivoMarca,
on_delete=models.CASCADE,
null=True,
blank=True)
modelo = models.ForeignKey(DispositivoModelo,
on_delete=models.CASCADE,
null=True,
blank=True)
serie = models.CharField(max_length=80, null=True, blank=True)
codigo_qr = et_fields.ThumbnailerImageField(upload_to='qr_dispositivo',
blank=True,
null=True)
class Meta:
verbose_name = "Dispositivo"
verbose_name_plural = "Dispositivos"
indexes = [
models.Index(fields=['triage']),
]
def __str__(self):
return str(self.triage)
def get_absolute_url(self):
return self.cast().get_absolute_url()
def cast(self):
"""Se encarga de obtener el dispositivo del modelo que ha heredado este objeto.
Por ejemplo, el CPU-1, M-3, etc.
"""
for name in dir(self):
try:
attr = getattr(self, name)
if isinstance(attr,
self.__class__) and type(attr) != type(self):
return attr
except:
pass
def crear_qrcode(self):
"""Genera le código QR para apuntar a la id del dispositivo
"""
qr = qrcode.QRCode(
version=1,
error_correction=qrcode.constants.ERROR_CORRECT_L,
box_size=6,
border=1,
)
qr.add_data(self.id)
img = qr.make(fit=True)
img = qr.make_image()
buffer = BytesIO()
img.save(buffer)
filename = 'dispositivo-%s.png' % (self.id)
filebuffer = InMemoryUploadedFile(buffer, None, filename, 'image/png',
buffer.getbuffer().nbytes, None)
self.codigo_qr.save(filename, filebuffer)