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# -*- coding: utf-8 -*-
from django.db import models
from django.db.models.signals import post_save, pre_save
from django.dispatch import receiver
from hvad.models import TranslatableModel, TranslatedFields
from bitfield import BitField
# my models
from directories.models import Iata
from service.models import Service
from settings.models import Setting
# custom dunctions
from functions.db import db_table_exists
from functions.form_check import translit_with_separator
from functions.signal_additional_func import fill_missing_languages, fill_meta_information
#check if table exist and create flags if true
flags = [str(item.id) for item in Service.objects.all()] if db_table_exists('service_service') else []
class City(TranslatableModel):
"""
Create City model
Uses hvad.TranslatableModel which is child of django.db.models class
"""
services = BitField(flags=flags)
url = models.SlugField(unique=True)
#relations
country = models.ForeignKey('country.Country', null=True, on_delete=models.PROTECT, related_name='cities')
code_IATA = models.ForeignKey(Iata, blank=True, null=True)
population = models.PositiveIntegerField(blank=True, null=True)
phone_code = models.PositiveIntegerField(blank=True, null=True)
#translated fields
translations = TranslatedFields(
name = models.CharField(max_length=50),
transport = models.TextField(blank=True),
description = models.TextField(blank=True),
famous_places = models.TextField(blank=True),
shoping = models.TextField(blank=True),
#-----meta
title = models.CharField(max_length=255),
descriptions = models.CharField(max_length=255),
keywords = models.CharField(max_length=255),
)
#fields saves information about creating and changing model
created = models.DateTimeField(auto_now_add=True)
modified = models.DateTimeField(auto_now=True)
def __unicode__(self):
return self.lazy_translation_getter('name', self.pk)
@receiver(post_save)
def city_post_save_handler(sender, **kwargs):
"""
objects saves two times:
- first time Country object
- second time CountryTranslation object
object must have at least one Translation
"""
obj = kwargs['instance']
if isinstance(obj, City):
fill_missing_languages(obj)
fill_meta_information(obj)
"""
if isinstance(obj, CityTranslation):
# object is Translation - set url
if obj.language_code == 'ru':
city = City.objects.get(id=obj.master_id)
country = city.country
city.url = '%s-%s'%(translit_with_separator(country.name), translit_with_separator(obj.name))
city.save()
"""