102 lines
3.3 KiB
Python
102 lines
3.3 KiB
Python
# bijoe - BI dashboard
|
|
# Copyright (C) 2015 Entr'ouvert
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify it
|
|
# under the terms of the GNU Affero General Public License as published
|
|
# by the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU Affero General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU Affero General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
import datetime
|
|
import json
|
|
|
|
from django.contrib.postgres.fields import JSONField
|
|
from django.db import models
|
|
from django.http import Http404
|
|
from django.utils.text import slugify
|
|
from django.utils.translation import ugettext_lazy as _
|
|
|
|
from bijoe.utils import get_warehouses
|
|
|
|
from .utils import Visualization as VisuUtils
|
|
|
|
|
|
class JSONEncoder(json.JSONEncoder):
|
|
def default(self, obj):
|
|
if isinstance(obj, datetime.datetime):
|
|
return obj.isoformat()
|
|
if isinstance(obj, datetime.date):
|
|
return obj.isoformat()
|
|
# Let the base class default method raise the TypeError
|
|
return json.JSONEncoder.default(self, obj)
|
|
|
|
|
|
class Visualization(models.Model):
|
|
slug = models.SlugField(verbose_name=_('Identifier'), unique=True, max_length=200)
|
|
name = models.TextField(verbose_name=_('name'))
|
|
parameters = JSONField(verbose_name=_('parameters'), default=dict, encoder=JSONEncoder)
|
|
|
|
class Meta:
|
|
ordering = ('name', 'id')
|
|
verbose_name = _('visualization')
|
|
verbose_name_plural = _('visualizations')
|
|
|
|
def __str__(self):
|
|
return self.name
|
|
|
|
def natural_key(self):
|
|
return (self.slug,)
|
|
|
|
def export_json(self):
|
|
visualization = {'slug': self.slug, 'name': self.name, 'parameters': self.parameters}
|
|
return visualization
|
|
|
|
@classmethod
|
|
def import_json(cls, data):
|
|
defaults = {'name': data['name'], 'parameters': data['parameters']}
|
|
_, created = cls.objects.update_or_create(slug=data['slug'], defaults=defaults)
|
|
return created
|
|
|
|
def save(self, *args, **kwargs):
|
|
if not self.slug:
|
|
slug = base_slug = slugify(self.name)[:40].strip('-')
|
|
i = 1
|
|
while True:
|
|
try:
|
|
Visualization.objects.get(slug=slug)
|
|
except Visualization.DoesNotExist:
|
|
break
|
|
i += 1
|
|
slug = '%s-%s' % (base_slug, i)
|
|
self.slug = slug
|
|
return super().save(*args, **kwargs)
|
|
|
|
@property
|
|
def exists(self):
|
|
try:
|
|
VisuUtils.get_cube(self.parameters, self.warehouses)
|
|
return True
|
|
except Http404:
|
|
return False
|
|
|
|
@property
|
|
def warehouses(self):
|
|
if not hasattr(self, '_warehouses'):
|
|
self._warehouses = get_warehouses()
|
|
return self._warehouses
|
|
|
|
@classmethod
|
|
def all_visualizations(cls):
|
|
visualizations = cls.objects.all()
|
|
warehouses = get_warehouses()
|
|
for visu in visualizations:
|
|
visu._warehouses = warehouses
|
|
return visualizations
|