100 lines
3.7 KiB
Python
100 lines
3.7 KiB
Python
import os
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import uuid
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import mimetypes
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from datetime import datetime
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from django.db import models
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from django.utils.translation import ugettext_lazy as _
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def get_filename_from_uuid(instance, filename, directory='documents'):
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populate_file_extension_and_mimetype(instance, filename)
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stem, extension = os.path.splitext(filename)
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return '%s/%s%s' % (directory, instance.uuid, extension)
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def populate_file_extension_and_mimetype(instance, filename):
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# First populate the file extension and mimetype
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instance.file_mimetype, encoding = mimetypes.guess_type(filename) or ""
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instance.file_filename, instance.file_extension = os.path.splitext(filename)
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class DocumentType(models.Model):
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name = models.CharField(max_length=32, verbose_name=_(u'name'))
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def __unicode__(self):
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return self.name
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class Document(models.Model):
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""" Minimum fields for a document entry.
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Inherit this model to customise document metadata, see BasicDocument for an example.
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"""
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document_type = models.ForeignKey(DocumentType, verbose_name=_(u'document type'))
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file = models.FileField(upload_to=get_filename_from_uuid)#lambda i,f: 'documents/%s' % i.uuid)
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uuid = models.CharField(max_length=36, default=lambda:unicode(uuid.uuid4()), blank=True, editable=False)
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file_mimetype = models.CharField(max_length=50, default="", editable=False)
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file_filename = models.CharField(max_length=64, default="", editable=False)
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file_extension = models.CharField(max_length=10, default="", editable=False)
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date_added = models.DateTimeField("added", auto_now_add=True)
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date_updated = models.DateTimeField("updated", auto_now=True)
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class Meta:
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verbose_name = _(u'document')
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verbose_name_plural = _(u'documents')
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ordering = ['-date_updated', '-date_added']
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def __unicode__(self):
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return self.uuid
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#@property
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#def friendly_filename(self):
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# ''' A friendly filename (ie not the UUID) for the user to see when they download.
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# Overload this with eg a slug field.
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# '''
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# return 'untitled.%s' % self.file_extension
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class MetadataType(models.Model):
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name = models.CharField(max_length=32, verbose_name=_(u'name'))
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default = models.CharField(max_length=64, blank=True, null=True, verbose_name=_(u'default'))
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lookup = models.CharField(max_length=64, blank=True, null=True, verbose_name=_(u'lookup'))
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#datatype = models.
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def __unicode__(self):
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return self.name
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class Meta:
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verbose_name = _(u'metadata type')
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verbose_name_plural = _(u'metadata types')
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# @models.permalink
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# def get_absolute_url(self):
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# return ('state_list', [])
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class DocumentTypeMetadataType(models.Model):
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document_type = models.ForeignKey(DocumentType, verbose_name=_(u'document type'))
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metadata_type = models.ForeignKey(MetadataType, verbose_name=_(u'metadata type'))
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#override default
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#create index dir? -bool
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#required? -bool
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def __unicode__(self):
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return '%s <-> %s' %(self.document_type, self.metadata_type)
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class Meta:
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verbose_name = _(u'document type metadata type connector')
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verbose_name_plural = _(u'document type metadata type connectors')
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class DocumentMetadata(models.Model):
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document = models.ForeignKey(Document, verbose_name=_(u'document'))
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metadata_type = models.ForeignKey(MetadataType, verbose_name=_(u'metadata type'))
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value = models.TextField(blank=True, null=True, verbose_name=_(u'metadata value'))
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def __unicode__(self):
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return '%s <-> %s' %(self.document, self.metadata_type)
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class Meta:
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verbose_name = _(u'document metadata')
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verbose_name_plural = _(u'document metadata')
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