manuels-scolaires/manuels/models.py

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import re
from django.core.exceptions import ValidationError
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from django.db import models
class Teacher(models.Model):
class Meta:
verbose_name = 'enseignant'
verbose_name_plural = 'enseignants'
first_name = models.CharField('prénom', max_length=100)
last_name = models.CharField('nom', max_length=100)
phone_number = models.CharField('numéro de téléphone', max_length=10)
def get_absolute_url(self):
from django.urls import reverse
return reverse('add_book', args=[str(self.id)])
@property
def full_name(self):
return f'{self.first_name} {self.last_name}'
class Level(models.Model):
class Meta:
verbose_name = 'classe'
verbose_name_plural = 'classe'
name = models.CharField('nom', max_length=10)
def isbn_validator(value):
regex = re.compile(r'(\d-?){10,13}X?')
if not regex.match(value):
raise ValidationError("%(value)s n'est pas un ISBN valide.", params={'value': value})
class Book(models.Model):
class Meta:
verbose_name = 'livre'
verbose_name_plural = 'livres'
teacher = models.ForeignKey(to=Teacher, on_delete=models.SET_NULL, null=True)
level = models.ForeignKey(to=Level, on_delete=models.SET_NULL, null=True)
field = models.CharField('matière', max_length=100)
title = models.TextField('titre')
authors = models.TextField('auteurs')
editor = models.CharField('éditeur', max_length=200)
collection = models.CharField('collection', max_length=200, blank=True)
publication_year = models.PositiveIntegerField('année de publication')
isbn = models.TextField('ISBN/EAN', validators=[isbn_validator])
price = models.PositiveIntegerField('prix')
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previously_acquired = models.BooleanField("manuel acquis précédemment par l'élève", blank=True)