191 lines
6.8 KiB
Python
191 lines
6.8 KiB
Python
# -*- coding: utf-8 -*-
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from __future__ import unicode_literals
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import os
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from io import BytesIO
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import uuid
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from _datetime import datetime
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from PIL import Image
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from django.conf import settings
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from django.contrib.auth.models import User
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from django.core.files.uploadedfile import SimpleUploadedFile
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from django.db import models
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from django.utils import timezone
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from django.core.validators import MaxValueValidator, MinValueValidator
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MAX_LENGTH = 256
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MAX_FOOD_NAME = 256
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MAX_FOOD_LOCATION_LENGTH = 256
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MAX_FOOD_PRICE_LENGTH = 10
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MAX_FOOD_ALLERGENNAME_LENGTH = 256
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MAX_HAPPY_HOUR_LOCATION_LENGTH = 256
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MAX_HAPPY_HOUR_DESCRIPTION_LENGTH = 1024
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MAX_FOOD_COMMENT_TITLE_LENGTH = 128
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MAX_FOOD_COMMENT_LENGTH = 2048
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def image_path(instance, filename):
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extension = filename.split('.')[-1]
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date = datetime.now().strftime('%Y/%m/%W')
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return 'food/originals/{}/{}.{}'.format(date, uuid.uuid4(), extension)
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def thumb_path(instance, filename):
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extension = filename.split('.')[-1]
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date = datetime.now().strftime('%Y/%m/%W')
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return 'food/thumbs/{}/{}.{}'.format(date, uuid.uuid4(), 'jpg')
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# Create your models here.
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class Menu(models.Model):
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ERBA = 'ERBA'
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MARKUSPLATZ = 'MARKUSPLATZ'
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FEKI = 'FEKI'
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AUSTRASSE = 'AUSTRASSE'
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LOCATION_CHOICES = (
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(ERBA, 'Erba'), (MARKUSPLATZ, 'Markusplatz'), (FEKI, 'Feldkirchenstrasse'), (AUSTRASSE, 'Austrasse'))
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# Api location data
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API_LOCATIONS = [{'id': FEKI, 'name': 'Feldkirchenstrasse', 'short': 'Feki'},
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{'id': AUSTRASSE, 'name': 'Austrasse', 'short': 'Austrasse'},
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{'id': ERBA, 'name': 'Erba', 'short': 'Erba'},
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{'id': MARKUSPLATZ, 'name': 'Markusplatz', 'short': 'Markusplatz'}, ]
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id = models.AutoField(primary_key=True)
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date = models.DateField(default=timezone.now)
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location = models.CharField(max_length=MAX_FOOD_LOCATION_LENGTH, choices=LOCATION_CHOICES)
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menu = models.ManyToManyField("SingleFood", related_name="foods")
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class Meta:
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unique_together = ('date', 'location')
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def __str__(self):
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return "Date: %s, Location: %s" % (self.date.strftime("%d.%m.%Y"), self.location)
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class SingleFood(models.Model):
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id = models.AutoField(primary_key=True)
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name = models.CharField(unique=True, max_length=MAX_FOOD_NAME)
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price_student = models.CharField(max_length=MAX_FOOD_PRICE_LENGTH, blank=True, null=True)
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price_employee = models.CharField(max_length=MAX_FOOD_PRICE_LENGTH, blank=True, null=True)
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price_guest = models.CharField(max_length=MAX_FOOD_PRICE_LENGTH, blank=True, null=True)
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image = models.ForeignKey('FoodImage', on_delete=models.SET_NULL, blank=True, null=True)
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rating = models.FloatField(default=0)
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allergens = models.ManyToManyField("Allergene", blank=True)
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comments = models.ManyToManyField('UserFoodComment', blank=True)
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def __str__(self):
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return "%s - Rating: %f - Student Price: %s" % (self.name, self.rating, self.price_student)
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class Allergene(models.Model):
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id = models.AutoField(primary_key=True)
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name = models.CharField(unique=True, max_length=MAX_FOOD_ALLERGENNAME_LENGTH)
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def __str__(self):
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return self.name
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class HappyHour(models.Model):
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id = models.AutoField(primary_key=True)
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date = models.DateField(default=timezone.now)
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starttime = models.TimeField(default=timezone.now)
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endtime = models.TimeField(default=timezone.now)
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location = models.ForeignKey('HappyHourLocation', on_delete=models.PROTECT)
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description = models.CharField(max_length=MAX_HAPPY_HOUR_DESCRIPTION_LENGTH)
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class Meta:
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unique_together = ('location', 'starttime', 'endtime')
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def __str__(self):
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return "Date: %s, Location: %s" % (self.date.strftime("%Y.%m.%d"), self.location)
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class HappyHourLocation(models.Model):
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id = models.AutoField(primary_key=True)
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name = models.CharField(unique=True, max_length=MAX_HAPPY_HOUR_LOCATION_LENGTH)
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def __str__(self):
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return "%s" % self.name
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class UserFoodRating(models.Model):
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id = models.AutoField(primary_key=True)
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user = models.ForeignKey(User, on_delete=models.PROTECT, unique=False)
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food = models.ForeignKey(SingleFood, on_delete=models.PROTECT)
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rating = models.FloatField(default=0, validators=[MaxValueValidator(5), MinValueValidator(0)])
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class Meta:
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unique_together = ('user', 'food')
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def __str__(self):
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return "User: %s - Rating: %s" % (self.user.username, self.rating)
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class UserFoodImage(models.Model):
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id = models.AutoField(primary_key=True)
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user = models.ForeignKey(User, on_delete=models.PROTECT, unique=False)
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food = models.ForeignKey(SingleFood, on_delete=models.PROTECT)
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image = models.ForeignKey('FoodImage', on_delete=models.PROTECT)
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class Meta:
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unique_together = ('user', 'food')
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def __str__(self):
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return "User: %s - Image: %s" % (self.user.username, str(self.image))
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class UserFoodComment(models.Model):
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id = models.AutoField(primary_key=True)
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user = models.ForeignKey(User, on_delete=models.PROTECT, unique=False)
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food = models.ForeignKey(SingleFood, on_delete=models.PROTECT)
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title = models.CharField(max_length=MAX_FOOD_COMMENT_TITLE_LENGTH, null=False, blank=False)
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description = models.CharField(max_length=MAX_FOOD_COMMENT_LENGTH, null=False, blank=False)
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class Meta:
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unique_together = ('user', 'food')
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def __str__(self):
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return "User: %s - Title: %s" % (self.user.username, self.title)
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class FoodImage(models.Model):
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id = models.AutoField(primary_key=True)
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image = models.ImageField(upload_to=image_path, blank=False, null=False)
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thumb = models.ImageField(upload_to=thumb_path, blank=True, null=True)
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def save(self, *args, **kwargs):
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image = Image.open(self.image)
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if image.mode not in ('L', 'RGB'):
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image = image.convert('RGB')
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thumb_size = (128, 128)
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image.thumbnail(thumb_size, Image.ANTIALIAS)
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# save the thumbnail to memory
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temp_handle = BytesIO()
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image.save(temp_handle, 'jpeg')
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temp_handle.seek(0) # rewind the file
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# save to the thumbnail field
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suf = SimpleUploadedFile(os.path.split(self.image.name)[-1],
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temp_handle.read(),
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content_type='image/jpg')
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# self.thumb.save('%s_thumbnail.%s' % (self.id, 'jpg'), suf, save=False)
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self.thumb.save(name='', content=suf, save=False)
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# save the image object
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super(FoodImage, self).save(*args, **kwargs)
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#
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# def delete(self, using=None, keep_parents=False):
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# os.remove(os.path.join(settings.MEDIA_ROOT, self.image.name))
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# os.remove(os.path.join(settings.MEDIA_ROOT, self.thumb.name))
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# super(FoodImage, self).delete()
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def __str__(self):
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return "Image: %s" % (str(self.image))
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