90 lines
3.2 KiB
Python
90 lines
3.2 KiB
Python
from typing import List
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from django import forms
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from django.contrib.auth import get_user_model
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from django.db import models
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from bookmarks.utils import unique
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from bookmarks.validators import BookmarkURLValidator
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class Tag(models.Model):
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name = models.CharField(max_length=64)
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date_added = models.DateTimeField()
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owner = models.ForeignKey(get_user_model(), on_delete=models.CASCADE)
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def __str__(self):
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return self.name
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def parse_tag_string(tag_string: str, delimiter: str = ','):
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if not tag_string:
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return []
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names = tag_string.strip().split(delimiter)
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names = [name.strip() for name in names if name]
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names = unique(names, str.lower)
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names.sort(key=str.lower)
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return names
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def build_tag_string(tag_names: List[str], delimiter: str = ','):
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return delimiter.join(tag_names)
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class Bookmark(models.Model):
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url = models.CharField(max_length=2048, validators=[BookmarkURLValidator()])
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title = models.CharField(max_length=512, blank=True)
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description = models.TextField(blank=True)
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website_title = models.CharField(max_length=512, blank=True, null=True)
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website_description = models.TextField(blank=True, null=True)
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unread = models.BooleanField(default=True)
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date_added = models.DateTimeField()
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date_modified = models.DateTimeField()
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date_accessed = models.DateTimeField(blank=True, null=True)
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owner = models.ForeignKey(get_user_model(), on_delete=models.CASCADE)
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tags = models.ManyToManyField(Tag)
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# Attributes might be calculated in query
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tag_count = 0 # Projection for number of associated tags
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tag_string = '' # Projection for list of tag names, comma-separated
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tag_projection = False # Tracks if the above projections were loaded
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@property
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def resolved_title(self):
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return self.website_title if not self.title else self.title
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@property
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def resolved_description(self):
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return self.website_description if not self.description else self.description
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@property
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def tag_names(self):
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# If tag projections were loaded then avoid querying all tags (=executing further selects)
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if self.tag_projection:
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return parse_tag_string(self.tag_string)
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else:
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return [tag.name for tag in self.tags.all()]
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def __str__(self):
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return self.resolved_title + ' (' + self.url[:30] + '...)'
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class BookmarkForm(forms.ModelForm):
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# Use URLField for URL
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url = forms.CharField(validators=[BookmarkURLValidator()])
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tag_string = forms.CharField(required=False)
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# Do not require title and description in form as we fill these automatically if they are empty
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title = forms.CharField(max_length=512,
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required=False)
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description = forms.CharField(required=False,
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widget=forms.Textarea())
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# Hidden field that determines whether to close window/tab after saving the bookmark
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auto_close = forms.CharField(required=False)
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# Hidden field that determines where to redirect after saving the form
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return_url = forms.CharField(required=False)
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class Meta:
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model = Bookmark
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fields = ['url', 'tag_string', 'title', 'description', 'auto_close', 'return_url']
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