models.py 6.3 KB
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from django.db import models
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from django.contrib.auth.models import AbstractBaseUser, PermissionsMixin, UserManager
from django.utils.translation import ugettext_lazy as _
from django.utils import timezone
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from django.core import validators
from django.core.exceptions import ValidationError
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from datetime import datetime
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class User(AbstractBaseUser, PermissionsMixin):
    """
    Defines the base user class, useable in every app
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    This is almost the same as the auth module AbstractUser since it inherits from it,
    but some fields are required, and the username is generated automatically with the
    name of the user (see generate_username()).
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    Added field: nick_name, date_of_birth
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    Required fields: email, first_name, last_name, date_of_birth
    """
    username = models.CharField(
        _('username'),
        max_length=254,
        unique=True,
        help_text=_('Required. 254 characters or fewer. Letters, digits and @/./+/-/_ only.'),
        validators=[
            validators.RegexValidator(
                r'^[\w.@+-]+$',
                _('Enter a valid username. This value may contain only '
                  'letters, numbers ' 'and @/./+/-/_ characters.')
            ),
        ],
        error_messages={
            'unique': _("A user with that username already exists."),
        },
    )
    first_name = models.CharField(_('first name'), max_length=30)
    last_name = models.CharField(_('last name'), max_length=30)
    email = models.EmailField(_('email address'), unique=True)
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    date_of_birth = models.DateTimeField(_('date of birth'))
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    nick_name = models.CharField(max_length=30, blank=True)
    is_staff = models.BooleanField(
        _('staff status'),
        default=False,
        help_text=_('Designates whether the user can log into this admin site.'),
    )
    is_active = models.BooleanField(
        _('active'),
        default=True,
        help_text=_(
            'Designates whether this user should be treated as active. '
            'Unselect this instead of deleting accounts.'
        ),
    )
    date_joined = models.DateTimeField(_('date joined'), default=timezone.now)

    objects = UserManager()

    USERNAME_FIELD = 'username'
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    REQUIRED_FIELDS = ['email', 'first_name', 'last_name', 'date_of_birth']
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    class Meta:
        verbose_name = _('user')
        verbose_name_plural = _('users')
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    def __str__(self):
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        return self.username

    def get_full_name(self):
        """
        Returns the first_name plus the last_name, with a space in between.
        """
        full_name = '%s %s' % (self.first_name, self.last_name)
        return full_name.strip()

    def get_short_name(self):
        "Returns the short name for the user."
        return self.first_name

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    def get_display_name(self):
        """
        Returns the display name of the user.
        A nickname if possible, otherwise, the full name
        """
        if self.nick_name != "":
            return self.nick_name
        return self.get_full_name()

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    def email_user(self, subject, message, from_email=None, **kwargs):
        """
        Sends an email to this User.
        """
        send_mail(subject, message, from_email, [self.email], **kwargs)

    def generate_username(self):
        """
        Generates a unique username based on the first and last names.
        For example: Guy Carlier gives gcarlier, and gcarlier1 if the first one exists
        Returns the generated username
        """
        user_name = str(self.first_name[0]+self.last_name).lower()
        un_set = [u.username for u in User.objects.all()]
        if user_name in un_set:
            i = 1
            while user_name+str(i) in un_set:
                i += 1
            user_name += str(i)
        self.username = user_name
        return user_name
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class Page(models.Model):
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    full_name = models.CharField(_('page full name'), max_length=30, blank=False, primary_key=True)
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    name = models.CharField(_('page name'), max_length=30, blank=False)
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    title = models.CharField(_("page title"), max_length=255, blank=True)
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    content = models.TextField(_("page content"), blank=True)
    revision = models.PositiveIntegerField(_("current revision"), default=1)
    is_locked = models.BooleanField(_("page mutex"), default=False)
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    parent = models.ForeignKey('self', related_name="children", null=True, blank=True, on_delete=models.SET_NULL)
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    class Meta:
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        unique_together = ('name', 'parent')
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        permissions = (
            ("can_edit", "Can edit the page"),
            ("can_view", "Can view the page"),
        )

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    @staticmethod
    def get_page_by_full_name(name):
        parent_name = '/'.join(name.split('/')[:-1])
        name = name.split('/')[-1]
        if parent_name == "":
            qs = Page.objects.filter(name=name, parent=None)
        else:
            qs = Page.objects.filter(name=name, parent__name=parent_name)
        return qs.first()

    def __init__(self, *args, **kwargs):
        super(Page, self).__init__(*args, **kwargs)

    def clean(self):
        """
        This function maintains coherence between full_name, name, and parent.full_name
        Be careful modifying it, it could break the entire page table!

        This function is mandatory since Django does not support compound primary key,
        otherwise, Page class would have had PRIMARY_KEY(name, parent)
        """
        if '/' in self.name:
            self.name = self.name.split('/')[-1]
        if self.full_name is None or self.full_name == "":
            if self.parent is None:
                self.full_name = self.name
            else:
                self.full_name = self.parent.get_full_name()+'/'+self.name
        self.full_name.strip('/')
        if self.full_name.split('/')[-1] != self.name:
            self.full_name = '/'.join(['/'.join(self.full_name.split('/')[:-1]), self.name])
        #if Page.objects.filter(name=self.name, parent=self.parent).exists():
        #    raise ValidationError("Duplicate Page")
        super(Page, self).clean()
        print("fullname: "+self.full_name)
        print("name: "+self.name)

    def save(self, *args, **kwargs):
        self.full_clean()
        super(Page, self).save(*args, **kwargs)

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    def __str__(self):
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        return self.get_full_name()

    def get_full_name(self):
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        return self.full_name
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    def get_display_name(self):
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        return self.full_name
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