it/itf/app/models.py
2012-03-09 19:39:12 +05:30

354 lines
9.3 KiB
Python
Executable File

from django.db import models
import operator
from django.db.models import Q
from ox.text import smartSplit
from ox.django.fields import DictField
from django.core.paginator import Paginator, InvalidPage, EmptyPage
from django.template.loader import render_to_string
from django.contrib.contenttypes.models import ContentType
from insidepages.models import ModuleTab, ModelExtra
from os.path import exists
from sorl.thumbnail import get_thumbnail
from django.template import RequestContext
import datetime
def splitSearch(string):
ret = []
for s in smartSplit(string):
word = s.replace("'", "").replace('"', '')
ret.append(word)
return ret
#i see the point of this function, but please clean it up: refer to 'except MultipleObjectsReturned' to see why this is here.
def get_real_ctype(module_name):
for c in ContentType.objects.filter(model=module_name):
try:
if c.model_class().is_itf_model == True:
return c
except:
pass
return None
class ItfModel(models.Model):
fts_fields = []
fk_filters = []
# related_models = []
sort_fields = []
hasComments = True
title_field = "title"
is_itf_model = True
changed = models.DateTimeField(null=True, editable=False)
created = models.DateTimeField(null=True, editable=False)
def save(self, *args, **kwargs):
''' On save, update timestamps '''
if not self.id:
self.created = datetime.datetime.today()
self.changed = datetime.datetime.today()
if self.created == None:
self.created = self.changed
super(ItfModel, self).save(*args, **kwargs)
class Meta:
abstract = True
def list_dict(self):
return {}
def info_dict(self):
return self.get_dict()
def get_title(self):
return self.get(self.title_field)
def get_tab(self):
modelextra = self.get_modelextra()
tab = ModuleTab.objects.filter(model=modelextra)[0]
return tab
@classmethod
def get_add_form(cls):
try:
formStr = cls.add_form
# cls = default_tab.model_class()
app_label = cls._meta.app_label
module = __import__(app_label + ".forms")
add_form = module.forms.__getattribute__(formStr)
return add_form
except:
return None
def get_modelextra(self):
try:
ctype = ContentType.objects.get(model=self.__class__._meta.module_name)
except:#FIXME: ideally catch only MultipleObjectsReturned (figure out where to import that from :/ ) #FUCKING way ugly hack to get clashing model ctype names with django internal models working (get_real_ctypes simply checks, if there are multiple content objects with the same 'module_name', which one is_itf_model, and returns that).
ctype = get_real_ctype(self.__class__._meta.module_name)
# modelextra = ModelExtra.objects.filter(model=ctype)[0]
modelextra = ctype.modelextra_set.all()[0]
return modelextra
def get_absolute_url(self):
return "%s/?tab=%s&object_id=%d" % (self.get_module().get_absolute_url(), self.get_tab().slug, self.id)
def get_module(self):
tab = self.get_tab()
if tab:
return tab.module
else:
return None
def get_main_image(self, size="142x150"):
if hasattr(self, 'main_image'):
main_image_getter = self.main_image
if type(main_image_getter).__name__ == 'instancemethod':
imgfield = main_image_getter()
else:
imgfield = main_image_getter
else:
imgfield = self.get_modelextra().default_image #FIXME!!
if imgfield is None or imgfield.name == '':
imgfield = self.get_modelextra().default_image
if imgfield:
try:
thumb = get_thumbnail(imgfield, size, crop="center").url
except:
thumb = ''
else:
thumb = '' # Add default image for site
return {
'thumb': thumb
}
'''
def main_image(self):
return None
'''
def get_template_path(self):
kls = self.__class__
return "modules/%s/%s.html" % (kls._meta.app_label, kls._meta.module_name)
def get_dict(self):
return self.get(self._get_fields().keys())
def insidepage_dict(self, request):
context = RequestContext(request, self.info_dict())
html = render_to_string(self.get_template_path(), context)
return {
'url': self.get_absolute_url(),
'title': self.get_title(),
'main_image': self.get_main_image(),
'html': html
}
def get(self, props):
typ = type(props)
if typ == list:
ret = {}
for p in props:
ret[p] = self._get_property(p)
return ret
elif typ == str:
return self._get_property(props)
else:
return False
def _get_property(self, prop):
fields = self._get_fields()
if prop in fields.keys():
field_type = fields[prop]
if field_type in ["TextField", "CharField", "IntegerField"]:
return self.__getattribute__(prop)
elif field_type == "ImageField":
imagefield = self.__getattribute__(prop)
return imagefield.url if imagefield.name != '' else ''
elif field_type == "ForeignKey":
return self._get_fk(prop)
elif field_type == "ManyToMany":
return self._get_m2m(prop)
elif prop.lower() in self.related_models:
return self._get_related(prop)
else:
try:
val = self.__getattribute__(prop)
if type(val).__name__ == 'instancemethod' and prop in self.getters:
return val()
else:
return val
except:
return False #FIXME
def _get_fk(self, prop):
prop = prop.replace("_id", "")
return self.__getattribute__(prop).get_dict()
# def _get_related_objects(self, fk_field):
def _get_m2m(self, prop):
ret = []
for o in self.__getattribute__(prop).all():
ret.append(o.get_dict())
return ret
def _get_related(self, prop):
attr = prop.lower() + "_set"
ret = []
for o in self.__getattribute__(attr).all():
ret.append(o.get_dict())
return ret
@classmethod
def _get_fields(kls):
ret = {}
for f in kls._meta.fields:
ret[f.get_attname()] = type(f).__name__
return ret
@classmethod
def fts(kls, qset, search):
terms = splitSearch(search)
qobjects = []
for t in terms:
for f in kls.fts_fields:
qstring = f + '__icontains'
qobject = Q(**{qstring:t})
qobjects.append(qobject)
return qset.filter(reduce(operator.or_, qobjects))
'''
eg. fks = {
'somefield': [1, 5, 7],
'someotherfield': [3]
}
'''
@classmethod
def filter_by_fks(kls, qset, fks):
qobjects = []
for key in fks.keys():
field = getField(kls._meta.fields, key)
if field:
# rel_class = field.related.parent_model
for i in fks[key]:
qobject = Q(**{field.name: i})
qobjects.append(qobject)
return qset.filter(reduce(operator.or_, qobjects))
@classmethod
def get_fk_objects(kls):
ret = {}
for f in kls.fk_filters:
ret[f] = []
field = getField(kls._meta.fields, f)
rel_class = field.related.parent_model
for o in rel_class.objects.all():
ret[f].append({
'id': o.id,
'title': unicode(o)
})
return ret
@classmethod
def get_list(kls, data):
options = {
'page': 1,
'count': 20,
'search': '',
'sort': [],
'range': [0,50],
'object_id': False
}
options.update(data)
ret = []
page_no = options['page']
list_size = options['count']
try:
qset = kls.get_qset()
except:
qset = kls.objects.all()
search = options['search']
if search != '':
qset = kls.fts(qset, search)
sort = options['sort']
if sort != []:
for s in sort:
if s['operator'] == '-':
operator = '-'
else:
operator = ''
sort = operator + s['key']
qset = qset.order_by(sort)
#FIXME: object_id needs to do something more graceful, this breaks sort.
if options['object_id'] != False and options['object_id'] != '':
object_id = options['object_id']
qset = qset.exclude(pk=object_id)
try:
obj = kls.objects.get(pk=object_id)
ret.append(obj.list_dict())
except:
pass
'''
r0 = options['range'][0]
r1 = options['range'][1]
results = qset[r0:r1]
'''
paginator = Paginator(qset, list_size)
try:
results = paginator.page(page_no)
except (EmptyPage, InvalidPage):
results = paginator.page(paginator.num_pages)
for r in results.object_list:
ret.append(r.list_dict())
return {
'page_no': page_no,
'num_pages': paginator.num_pages,
'items': ret
}
@classmethod
def get_qset(kls):
'''
Override this method in your model class to define a custom queryset instead of objects.all(), for instance, to always exclude unpublished items.
'''
raise NotImplementedError
def getField(fields, name):
for f in fields:
if f.name == name:
return f
return False
def site_config():
with open(settings.SITE_CONFIG) as f:
site_config = json.load(f)
site_config['keys'] = {}
for key in site_config['itemKeys']:
site_config['keys'][key['id']] = key
site_config['_findKeys'] = {}
for key in site_config['findKeys']:
site_config['_findKeys'][key['id']] = key
return site_config