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Simplify and optimize smart linking code and views, remove now unused LINKING_SHOW_EMPTY_SMART_LINKS configuration setting (issue #56)

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Roberto Rosario
2014-11-11 19:41:19 -04:00
parent c0ea3276a3
commit bf4175b263
13 changed files with 100 additions and 250 deletions
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34
mayan/apps/linking/models.py
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@@ -1,12 +1,14 @@
from __future__ import absolute_import
from django.db import models
from django.db.models import Q
from django.utils.translation import ugettext_lazy as _
from django.utils.translation import ugettext
from documents.models import DocumentType
from documents.models import Document, DocumentType
from .literals import INCLUSION_AND, INCLUSION_CHOICES, OPERATOR_CHOICES
from .literals import (INCLUSION_AND, INCLUSION_CHOICES, INCLUSION_OR,
OPERATOR_CHOICES)
from .managers import SmartLinkManager
@@ -18,19 +20,39 @@ class SmartLink(models.Model):
objects = SmartLinkManager()
def get_document_types_not_selected(self):
return DocumentType.objects.exclude(pk__in=self.document_types.all())
def __unicode__(self):
return self.title
def get_linked_document_for(self, document):
if document.document_type.pk not in self.document_types.values_list('pk', flat=True):
raise Exception(_('This smart link is not allowed for the selected document\'s type.'))
smart_link_query = Q()
for condition in self.conditions.filter(enabled=True):
condition_query = Q(**{
'%s__%s' % (condition.foreign_document_data, condition.operator): eval(condition.expression, {'document': document})
})
if condition.negated:
condition_query = ~condition_query
if condition.inclusion == INCLUSION_AND:
smart_link_query &= condition_query
elif condition.inclusion == INCLUSION_OR:
smart_link_query |= condition_query
if smart_link_query:
return Document.objects.filter(smart_link_query)
else:
return Document.objects.none()
class Meta:
verbose_name = _(u'Smart link')
verbose_name_plural = _(u'Smart links')
class SmartLinkCondition(models.Model):
smart_link = models.ForeignKey(SmartLink, verbose_name=_(u'Smart link'))
smart_link = models.ForeignKey(SmartLink, related_name='conditions', verbose_name=_(u'Smart link'))
inclusion = models.CharField(default=INCLUSION_AND, max_length=16, choices=INCLUSION_CHOICES, help_text=_(u'The inclusion is ignored for the first item.'))
foreign_document_data = models.CharField(max_length=128, verbose_name=_(u'Foreign document attribute'), help_text=_(u'This represents the metadata of all other documents.'))
operator = models.CharField(max_length=16, choices=OPERATOR_CHOICES)