Made the migrations for the new Tags and LiteAttributes.

This commit is contained in:
Griatch 2013-07-12 12:04:57 +02:00
parent e178963941
commit 2c17b7b675
9 changed files with 829 additions and 84 deletions

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@ -0,0 +1,141 @@
# -*- coding: utf-8 -*-
import datetime
from south.db import db
from south.v2 import SchemaMigration
from django.db import models
class Migration(SchemaMigration):
def forwards(self, orm):
# Adding M2M table for field db_liteattributes on 'ObjectDB'
m2m_table_name = db.shorten_name(u'objects_objectdb_db_liteattributes')
db.create_table(m2m_table_name, (
('id', models.AutoField(verbose_name='ID', primary_key=True, auto_created=True)),
('objectdb', models.ForeignKey(orm[u'objects.objectdb'], null=False)),
('liteattribute', models.ForeignKey(orm[u'typeclasses.liteattribute'], null=False))
))
db.create_unique(m2m_table_name, ['objectdb_id', 'liteattribute_id'])
# Adding M2M table for field db_tags on 'ObjectDB'
m2m_table_name = db.shorten_name(u'objects_objectdb_db_tags')
db.create_table(m2m_table_name, (
('id', models.AutoField(verbose_name='ID', primary_key=True, auto_created=True)),
('objectdb', models.ForeignKey(orm[u'objects.objectdb'], null=False)),
('tag', models.ForeignKey(orm[u'typeclasses.tag'], null=False))
))
db.create_unique(m2m_table_name, ['objectdb_id', 'tag_id'])
def backwards(self, orm):
# Removing M2M table for field db_liteattributes on 'ObjectDB'
db.delete_table(db.shorten_name(u'objects_objectdb_db_liteattributes'))
# Removing M2M table for field db_tags on 'ObjectDB'
db.delete_table(db.shorten_name(u'objects_objectdb_db_tags'))
models = {
u'auth.group': {
'Meta': {'object_name': 'Group'},
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '80'}),
'permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'})
},
u'auth.permission': {
'Meta': {'ordering': "(u'content_type__app_label', u'content_type__model', u'codename')", 'unique_together': "((u'content_type', u'codename'),)", 'object_name': 'Permission'},
'codename': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['contenttypes.ContentType']"}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'name': ('django.db.models.fields.CharField', [], {'max_length': '50'})
},
u'contenttypes.contenttype': {
'Meta': {'ordering': "('name',)", 'unique_together': "(('app_label', 'model'),)", 'object_name': 'ContentType', 'db_table': "'django_content_type'"},
'app_label': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'model': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
'name': ('django.db.models.fields.CharField', [], {'max_length': '100'})
},
u'objects.alias': {
'Meta': {'object_name': 'Alias'},
'db_key': ('django.db.models.fields.CharField', [], {'max_length': '255', 'db_index': 'True'}),
'db_obj': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['objects.ObjectDB']"}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'})
},
u'objects.objectdb': {
'Meta': {'object_name': 'ObjectDB'},
'db_attributes': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['typeclasses.Attribute']", 'null': 'True', 'symmetrical': 'False'}),
'db_cmdset_storage': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True', 'blank': 'True'}),
'db_date_created': ('django.db.models.fields.DateTimeField', [], {'auto_now_add': 'True', 'blank': 'True'}),
'db_destination': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'destinations_set'", 'null': 'True', 'to': u"orm['objects.ObjectDB']"}),
'db_home': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'homes_set'", 'null': 'True', 'to': u"orm['objects.ObjectDB']"}),
'db_key': ('django.db.models.fields.CharField', [], {'max_length': '255', 'db_index': 'True'}),
'db_liteattributes': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['typeclasses.LiteAttribute']", 'null': 'True', 'symmetrical': 'False'}),
'db_location': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'locations_set'", 'null': 'True', 'to': u"orm['objects.ObjectDB']"}),
'db_lock_storage': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
'db_permissions': ('django.db.models.fields.CharField', [], {'max_length': '255', 'blank': 'True'}),
'db_player': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['players.PlayerDB']", 'null': 'True', 'blank': 'True'}),
'db_sessid': ('django.db.models.fields.IntegerField', [], {'null': 'True'}),
'db_tags': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['typeclasses.Tag']", 'null': 'True', 'symmetrical': 'False'}),
'db_typeclass_path': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True'}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'})
},
u'objects.objectnick': {
'Meta': {'unique_together': "(('db_nick', 'db_type', 'db_obj'),)", 'object_name': 'ObjectNick'},
'db_nick': ('django.db.models.fields.CharField', [], {'max_length': '255', 'db_index': 'True'}),
'db_obj': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['objects.ObjectDB']"}),
'db_real': ('django.db.models.fields.TextField', [], {}),
'db_type': ('django.db.models.fields.CharField', [], {'default': "'inputline'", 'max_length': '16', 'null': 'True', 'blank': 'True'}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'})
},
u'players.playerdb': {
'Meta': {'object_name': 'PlayerDB'},
'date_joined': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
'db_attributes': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['typeclasses.Attribute']", 'null': 'True', 'symmetrical': 'False'}),
'db_cmdset_storage': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True'}),
'db_date_created': ('django.db.models.fields.DateTimeField', [], {'auto_now_add': 'True', 'blank': 'True'}),
'db_is_connected': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
'db_key': ('django.db.models.fields.CharField', [], {'max_length': '255', 'db_index': 'True'}),
'db_liteattributes': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['typeclasses.LiteAttribute']", 'null': 'True', 'symmetrical': 'False'}),
'db_lock_storage': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
'db_permissions': ('django.db.models.fields.CharField', [], {'max_length': '255', 'blank': 'True'}),
'db_tags': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['typeclasses.Tag']", 'null': 'True', 'symmetrical': 'False'}),
'db_typeclass_path': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True'}),
'email': ('django.db.models.fields.EmailField', [], {'max_length': '75', 'blank': 'True'}),
'first_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
'groups': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['auth.Group']", 'symmetrical': 'False', 'blank': 'True'}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'is_active': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
'is_staff': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
'is_superuser': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
'last_login': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
'last_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
'password': ('django.db.models.fields.CharField', [], {'max_length': '128'}),
'user_permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'}),
'username': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '30'})
},
u'typeclasses.attribute': {
'Meta': {'object_name': 'Attribute'},
'db_date_created': ('django.db.models.fields.DateTimeField', [], {'auto_now_add': 'True', 'blank': 'True'}),
'db_key': ('django.db.models.fields.CharField', [], {'max_length': '255', 'db_index': 'True'}),
'db_lock_storage': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
'db_value': ('src.utils.picklefield.PickledObjectField', [], {'null': 'True'}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'})
},
u'typeclasses.liteattribute': {
'Meta': {'object_name': 'LiteAttribute', 'index_together': "(('db_key', 'db_category'),)"},
'db_category': ('django.db.models.fields.CharField', [], {'max_length': '64', 'null': 'True', 'blank': 'True'}),
'db_data': ('django.db.models.fields.TextField', [], {}),
'db_key': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'})
},
u'typeclasses.tag': {
'Meta': {'unique_together': "(('db_key', 'db_category'),)", 'object_name': 'Tag', 'index_together': "(('db_key', 'db_category'),)"},
'db_category': ('django.db.models.fields.CharField', [], {'max_length': '64', 'null': 'True'}),
'db_data': ('django.db.models.fields.TextField', [], {'null': 'True', 'blank': 'True'}),
'db_key': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True'}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'})
}
}
complete_apps = ['objects']

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@ -0,0 +1,134 @@
# -*- coding: utf-8 -*-
import datetime
from south.db import db
from south.v2 import SchemaMigration
from django.db import models
class Migration(SchemaMigration):
depends_on = (('typeclasses', '0004_copy_nicks_to_liteattrs_aliases_to_tags'),)
def forwards(self, orm):
# Removing unique constraint on 'ObjectNick', fields ['db_nick', 'db_type', 'db_obj']
db.delete_unique(u'objects_objectnick', ['db_nick', 'db_type', 'db_obj_id'])
# Deleting model 'ObjectNick'
db.delete_table(u'objects_objectnick')
# Deleting model 'Alias'
db.delete_table(u'objects_alias')
def backwards(self, orm):
# Adding model 'ObjectNick'
db.create_table(u'objects_objectnick', (
('db_type', self.gf('django.db.models.fields.CharField')(default='inputline', max_length=16, null=True, blank=True)),
('db_nick', self.gf('django.db.models.fields.CharField')(max_length=255, db_index=True)),
('db_obj', self.gf('django.db.models.fields.related.ForeignKey')(to=orm['objects.ObjectDB'])),
(u'id', self.gf('django.db.models.fields.AutoField')(primary_key=True)),
('db_real', self.gf('django.db.models.fields.TextField')()),
))
db.send_create_signal(u'objects', ['ObjectNick'])
# Adding unique constraint on 'ObjectNick', fields ['db_nick', 'db_type', 'db_obj']
db.create_unique(u'objects_objectnick', ['db_nick', 'db_type', 'db_obj_id'])
# Adding model 'Alias'
db.create_table(u'objects_alias', (
('db_obj', self.gf('django.db.models.fields.related.ForeignKey')(to=orm['objects.ObjectDB'])),
('db_key', self.gf('django.db.models.fields.CharField')(max_length=255, db_index=True)),
(u'id', self.gf('django.db.models.fields.AutoField')(primary_key=True)),
))
db.send_create_signal(u'objects', ['Alias'])
models = {
u'auth.group': {
'Meta': {'object_name': 'Group'},
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '80'}),
'permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'})
},
u'auth.permission': {
'Meta': {'ordering': "(u'content_type__app_label', u'content_type__model', u'codename')", 'unique_together': "((u'content_type', u'codename'),)", 'object_name': 'Permission'},
'codename': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['contenttypes.ContentType']"}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'name': ('django.db.models.fields.CharField', [], {'max_length': '50'})
},
u'contenttypes.contenttype': {
'Meta': {'ordering': "('name',)", 'unique_together': "(('app_label', 'model'),)", 'object_name': 'ContentType', 'db_table': "'django_content_type'"},
'app_label': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'model': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
'name': ('django.db.models.fields.CharField', [], {'max_length': '100'})
},
u'objects.objectdb': {
'Meta': {'object_name': 'ObjectDB'},
'db_attributes': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['typeclasses.Attribute']", 'null': 'True', 'symmetrical': 'False'}),
'db_cmdset_storage': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True', 'blank': 'True'}),
'db_date_created': ('django.db.models.fields.DateTimeField', [], {'auto_now_add': 'True', 'blank': 'True'}),
'db_destination': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'destinations_set'", 'null': 'True', 'to': u"orm['objects.ObjectDB']"}),
'db_home': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'homes_set'", 'null': 'True', 'to': u"orm['objects.ObjectDB']"}),
'db_key': ('django.db.models.fields.CharField', [], {'max_length': '255', 'db_index': 'True'}),
'db_liteattributes': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['typeclasses.LiteAttribute']", 'null': 'True', 'symmetrical': 'False'}),
'db_location': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'locations_set'", 'null': 'True', 'to': u"orm['objects.ObjectDB']"}),
'db_lock_storage': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
'db_permissions': ('django.db.models.fields.CharField', [], {'max_length': '255', 'blank': 'True'}),
'db_player': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['players.PlayerDB']", 'null': 'True', 'blank': 'True'}),
'db_sessid': ('django.db.models.fields.IntegerField', [], {'null': 'True'}),
'db_tags': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['typeclasses.Tag']", 'null': 'True', 'symmetrical': 'False'}),
'db_typeclass_path': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True'}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'})
},
u'players.playerdb': {
'Meta': {'object_name': 'PlayerDB'},
'date_joined': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
'db_attributes': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['typeclasses.Attribute']", 'null': 'True', 'symmetrical': 'False'}),
'db_cmdset_storage': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True'}),
'db_date_created': ('django.db.models.fields.DateTimeField', [], {'auto_now_add': 'True', 'blank': 'True'}),
'db_is_connected': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
'db_key': ('django.db.models.fields.CharField', [], {'max_length': '255', 'db_index': 'True'}),
'db_liteattributes': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['typeclasses.LiteAttribute']", 'null': 'True', 'symmetrical': 'False'}),
'db_lock_storage': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
'db_permissions': ('django.db.models.fields.CharField', [], {'max_length': '255', 'blank': 'True'}),
'db_tags': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['typeclasses.Tag']", 'null': 'True', 'symmetrical': 'False'}),
'db_typeclass_path': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True'}),
'email': ('django.db.models.fields.EmailField', [], {'max_length': '75', 'blank': 'True'}),
'first_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
'groups': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['auth.Group']", 'symmetrical': 'False', 'blank': 'True'}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'is_active': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
'is_staff': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
'is_superuser': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
'last_login': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
'last_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
'password': ('django.db.models.fields.CharField', [], {'max_length': '128'}),
'user_permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'}),
'username': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '30'})
},
u'typeclasses.attribute': {
'Meta': {'object_name': 'Attribute'},
'db_date_created': ('django.db.models.fields.DateTimeField', [], {'auto_now_add': 'True', 'blank': 'True'}),
'db_key': ('django.db.models.fields.CharField', [], {'max_length': '255', 'db_index': 'True'}),
'db_lock_storage': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
'db_value': ('src.utils.picklefield.PickledObjectField', [], {'null': 'True'}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'})
},
u'typeclasses.liteattribute': {
'Meta': {'object_name': 'LiteAttribute', 'index_together': "(('db_key', 'db_category'),)"},
'db_category': ('django.db.models.fields.CharField', [], {'max_length': '64', 'null': 'True', 'blank': 'True'}),
'db_data': ('django.db.models.fields.TextField', [], {}),
'db_key': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'})
},
u'typeclasses.tag': {
'Meta': {'unique_together': "(('db_key', 'db_category'),)", 'object_name': 'Tag', 'index_together': "(('db_key', 'db_category'),)"},
'db_category': ('django.db.models.fields.CharField', [], {'max_length': '64', 'null': 'True'}),
'db_data': ('django.db.models.fields.TextField', [], {'null': 'True', 'blank': 'True'}),
'db_key': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True'}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'})
}
}
complete_apps = ['objects']

View file

@ -24,7 +24,7 @@ from src.server.caches import get_field_cache, set_field_cache, del_field_cache
from src.server.caches import get_prop_cache, set_prop_cache, del_prop_cache
from src.typeclasses.typeclass import TypeClass
from src.players.models import PlayerNick
#from src.players.models import PlayerNick
from src.objects.manager import ObjectManager
from src.players.models import PlayerDB
from src.commands.cmdsethandler import CmdSetHandler
@ -54,55 +54,55 @@ _HERE = _("here")
#
#------------------------------------------------------------
class Alias(SharedMemoryModel):
"""
This model holds a range of alternate names for an object.
These are intrinsic properties of the object. The split
is so as to allow for effective global searches also by
alias.
"""
db_key = models.CharField('alias', max_length=255, db_index=True)
db_obj = models.ForeignKey("ObjectDB", verbose_name='object')
class Meta:
"Define Django meta options"
verbose_name = "Object alias"
verbose_name_plural = "Object aliases"
def __unicode__(self):
return u"%s" % self.db_key
def __str__(self):
return str(self.db_key)
#------------------------------------------------------------
#class Alias(SharedMemoryModel):
# """
# This model holds a range of alternate names for an object.
# These are intrinsic properties of the object. The split
# is so as to allow for effective global searches also by
# alias.
# """
# db_key = models.CharField('alias', max_length=255, db_index=True)
# db_obj = models.ForeignKey("ObjectDB", verbose_name='object')
#
# Object Nicks
# class Meta:
# "Define Django meta options"
# verbose_name = "Object alias"
# verbose_name_plural = "Object aliases"
# def __unicode__(self):
# return u"%s" % self.db_key
# def __str__(self):
# return str(self.db_key)
#
#------------------------------------------------------------
class ObjectNick(TypeNick):
"""
The default nick types used by Evennia are:
inputline (default) - match against all input
player - match against player searches
obj - match against object searches
channel - used to store own names for channels
"""
db_obj = models.ForeignKey("ObjectDB", verbose_name='object')
class Meta:
"Define Django meta options"
verbose_name = "Nickname for Objects"
verbose_name_plural = "Nicknames for Objects"
unique_together = ("db_nick", "db_type", "db_obj")
class ObjectNickHandler(TypeNickHandler):
"""
Handles nick access and setting. Accessed through ObjectDB.nicks
"""
NickClass = ObjectNick
#
#
##------------------------------------------------------------
##
## Object Nicks
##
##------------------------------------------------------------
#
#class ObjectNick(TypeNick):
# """
#
# The default nick types used by Evennia are:
# inputline (default) - match against all input
# player - match against player searches
# obj - match against object searches
# channel - used to store own names for channels
# """
# db_obj = models.ForeignKey("ObjectDB", verbose_name='object')
#
# class Meta:
# "Define Django meta options"
# verbose_name = "Nickname for Objects"
# verbose_name_plural = "Nicknames for Objects"
# unique_together = ("db_nick", "db_type", "db_obj")
#
#class ObjectNickHandler(TypeNickHandler):
# """
# Handles nick access and setting. Accessed through ObjectDB.nicks
# """
# NickClass = ObjectNick
#------------------------------------------------------------
@ -199,7 +199,7 @@ class ObjectDB(TypedObject):
_SA(self, "cmdset", CmdSetHandler(self))
_GA(self, "cmdset").update(init_mode=True)
_SA(self, "scripts", ScriptHandler(self))
_SA(self, "nicks", ObjectNickHandler(self))
#_SA(self, "nicks", ObjectNickHandler(self))
# Wrapper properties to easily set database fields. These are
# @property decorators that allows to access these fields using