bornhack-website/info/models.py

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from __future__ import unicode_literals
from django.contrib import messages
from django.db import models
from utils.models import CreatedUpdatedModel
from django.core.exceptions import ValidationError
class InfoCategory(CreatedUpdatedModel):
class Meta:
ordering = ['-weight', 'headline']
unique_together = (('anchor', 'camp'), ('headline', 'camp'))
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verbose_name_plural = "Info Categories"
camp = models.ForeignKey(
'camps.Camp',
related_name = 'infocategories',
on_delete = models.PROTECT
)
headline = models.CharField(
max_length = 100,
help_text = "The headline of this info category"
)
anchor = models.SlugField(
help_text = "The HTML anchor to use for this info category."
)
weight = models.PositiveIntegerField(
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help_text = 'Determines sorting/ordering. Heavier categories sink to the bottom. Categories with the same weight are ordered alphabetically. Defaults to 100.',
default = 100,
)
def clean(self):
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if InfoItem.objects.filter(category__camp=self.camp, anchor=self.anchor).exists():
# this anchor is already in use on an item, so it cannot be used (must be unique on the page)
raise ValidationError({'anchor': 'Anchor is already in use on an info item for this camp'})
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def __str__(self):
return '%s (%s)' % (self.headline, self.camp)
class InfoItem(CreatedUpdatedModel):
class Meta:
ordering = ['-weight', 'headline']
unique_together = (('anchor', 'category'), ('headline', 'category'))
category = models.ForeignKey(
'info.InfoCategory',
related_name = 'infoitems',
on_delete = models.PROTECT
)
headline = models.CharField(
max_length = 100,
help_text = "Headline of this info item."
)
anchor = models.SlugField(
help_text = "The HTML anchor to use for this info item."
)
body = models.TextField(
help_text = 'Body of this info item. Markdown is supported.'
)
weight = models.PositiveIntegerField(
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help_text = 'Determines sorting/ordering. Heavier items sink to the bottom. Items with the same weight are ordered alphabetically. Defaults to 100.',
default = 100,
)
def clean(self):
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if InfoCategory.objects.filter(camp=self.category.camp, anchor=self.anchor).exists():
# this anchor is already in use on a category, so it cannot be used here (they must be unique on the entire page)
raise ValidationError({'anchor': 'Anchor is already in use on an info category for this camp'})