bin/osv/fields.py

   1 # -*- encoding: utf-8 -*-
   2 ##############################################################################
   3 #
   4 #    OpenERP, Open Source Management Solution
   5 #    Copyright (C) 2004-2009 Tiny SPRL (<http://tiny.be>). All Rights Reserved
   6 #    $Id$
   7 #
   8 #    This program is free software: you can redistribute it and/or modify
   9 #    it under the terms of the GNU General Public License as published by
  10 #    the Free Software Foundation, either version 3 of the License, or
  11 #    (at your option) any later version.
  12 #
  13 #    This program is distributed in the hope that it will be useful,
  14 #    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 #    GNU General Public License for more details.
  17 #
  18 #    You should have received a copy of the GNU General Public License
  19 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 #
  21 ##############################################################################
  22
  23 # . Fields:
  24 #      - simple
  25 #      - relations (one2many, many2one, many2many)
  26 #      - function
  27 #
  28 # Fields Attributes:
  29 #   _classic_read: is a classic sql fields
  30 #   _type   : field type
  31 #   readonly
  32 #   required
  33 #   size
  34 #
  35 import string
  36 import netsvc
  37 import sys
  38
  39 from psycopg2 import Binary
  40 import warnings
  41
  42 import tools
  43
  44
  45 def _symbol_set(symb):
  46     if symb == None or symb == False:
  47         return None
  48     elif isinstance(symb, unicode):
  49         return symb.encode('utf-8')
  50     return str(symb)
  51
  52
  53 class _column(object):
  54     _classic_read = True
  55     _classic_write = True
  56     _properties = False
  57     _type = 'unknown'
  58     _obj = None
  59     _multi = False
  60     _symbol_c = '%s'
  61     _symbol_f = _symbol_set
  62     _symbol_set = (_symbol_c, _symbol_f)
  63     _symbol_get = None
  64
  65     def __init__(self, string='unknown', required=False, readonly=False, domain=None, context='', states=None, priority=0, change_default=False, size=None, ondelete="set null", translate=False, select=False, **args):
  66         self.states = states or {}
  67         self.string = string
  68         self.readonly = readonly
  69         self.required = required
  70         self.size = size
  71         self.help = args.get('help', '')
  72         self.priority = priority
  73         self.change_default = change_default
  74         self.ondelete = ondelete
  75         self.translate = translate
  76         self._domain = domain or []
  77         self._context = context
  78         self.write = False
  79         self.read = False
  80         self.view_load = 0
  81         self.select = select
  82         for a in args:
  83             if args[a]:
  84                 setattr(self, a, args[a])
  85
  86     def restart(self):
  87         pass
  88
  89     def set(self, cr, obj, id, name, value, user=None, context=None):
  90         cr.execute('update '+obj._table+' set '+name+'='+self._symbol_set[0]+' where id=%s', (self._symbol_set[1](value), id))
  91
  92     def set_memory(self, cr, obj, id, name, value, user=None, context=None):
  93         raise Exception(_('Not implemented set_memory method !'))
  94
  95     def get_memory(self, cr, obj, ids, name, user=None, context=None, values=None):
  96         raise Exception(_('Not implemented get_memory method !'))
  97
  98     def get(self, cr, obj, ids, name, user=None, offset=0, context=None, values=None):
  99         raise Exception(_('undefined get method !'))
 100
 101     def search(self, cr, obj, args, name, value, offset=0, limit=None, uid=None):
 102         ids = obj.search(cr, uid, args+self._domain+[(name, 'ilike', value)], offset, limit)
 103         res = obj.read(cr, uid, ids, [name])
 104         return [x[name] for x in res]
 105
 106     def search_memory(self, cr, obj, args, name, value, offset=0, limit=None, uid=None, context=None):
 107         raise Exception(_('Not implemented search_memory method !'))
 108
 109
 110 # ---------------------------------------------------------
 111 # Simple fields
 112 # ---------------------------------------------------------
 113 class boolean(_column):
 114     _type = 'boolean'
 115     _symbol_c = '%s'
 116     _symbol_f = lambda x: x and 'True' or 'False'
 117     _symbol_set = (_symbol_c, _symbol_f)
 118
 119
 120 class integer_big(_column):
 121     _type = 'integer_big'
 122     _symbol_c = '%s'
 123     _symbol_f = lambda x: int(x or 0)
 124     _symbol_set = (_symbol_c, _symbol_f)
 125
 126 class integer(_column):
 127     _type = 'integer'
 128     _symbol_c = '%s'
 129     _symbol_f = lambda x: int(x or 0)
 130     _symbol_set = (_symbol_c, _symbol_f)
 131
 132
 133 class reference(_column):
 134     _type = 'reference'
 135
 136     def __init__(self, string, selection, size, **args):
 137         _column.__init__(self, string=string, size=size, selection=selection, **args)
 138
 139
 140 class char(_column):
 141     _type = 'char'
 142
 143     def __init__(self, string, size, **args):
 144         _column.__init__(self, string=string, size=size, **args)
 145         self._symbol_set = (self._symbol_c, self._symbol_set_char)
 146
 147     # takes a string (encoded in utf8) and returns a string (encoded in utf8)
 148     def _symbol_set_char(self, symb):
 149         #TODO:
 150         # * we need to remove the "symb==False" from the next line BUT
 151         #   for now too many things rely on this broken behavior
 152         # * the symb==None test should be common to all data types
 153         if symb == None or symb == False:
 154             return None
 155
 156         # we need to convert the string to a unicode object to be able
 157         # to evaluate its length (and possibly truncate it) reliably
 158         u_symb = tools.ustr(symb)
 159
 160         return u_symb[:self.size].encode('utf8')
 161
 162
 163 class text(_column):
 164     _type = 'text'
 165
 166 import __builtin__
 167
 168 class float(_column):
 169     _type = 'float'
 170     _symbol_c = '%s'
 171     _symbol_f = lambda x: __builtin__.float(x or 0.0)
 172     _symbol_set = (_symbol_c, _symbol_f)
 173
 174     def __init__(self, string='unknown', digits=None, **args):
 175         _column.__init__(self, string=string, **args)
 176         self.digits = digits
 177
 178
 179 class date(_column):
 180     _type = 'date'
 181
 182
 183 class datetime(_column):
 184     _type = 'datetime'
 185
 186
 187 class time(_column):
 188     _type = 'time'
 189
 190
 191 class binary(_column):
 192     _type = 'binary'
 193     _symbol_c = '%s'
 194     _symbol_f = lambda symb: symb and Binary(symb) or None
 195     _symbol_set = (_symbol_c, _symbol_f)
 196     _symbol_get = lambda self, x: x and str(x)
 197
 198     _classic_read = False
 199
 200     def __init__(self, string='unknown', filters=None, **args):
 201         _column.__init__(self, string=string, **args)
 202         self.filters = filters
 203
 204     def get_memory(self, cr, obj, ids, name, user=None, context=None, values=None):
 205         if not context:
 206             context = {}
 207         if not values:
 208             values = []
 209         res = {}
 210         for i in ids:
 211             val = None
 212             for v in values:
 213                 if v['id'] == i:
 214                     val = v[name]
 215                     break
 216             if context.get('bin_size', False) and val:
 217                 res[i] = tools.human_size(long(val))
 218             else:
 219                 res[i] = val
 220         return res
 221
 222     get = get_memory
 223
 224
 225 class selection(_column):
 226     _type = 'selection'
 227
 228     def __init__(self, selection, string='unknown', **args):
 229         _column.__init__(self, string=string, **args)
 230         self.selection = selection
 231
 232 # ---------------------------------------------------------
 233 # Relationals fields
 234 # ---------------------------------------------------------
 235
 236 #
 237 # Values: (0, 0,  { fields })    create
 238 #         (1, ID, { fields })    modification
 239 #         (2, ID)                remove (delete)
 240 #         (3, ID)                unlink one (target id or target of relation)
 241 #         (4, ID)                link
 242 #         (5)                    unlink all (only valid for one2many)
 243 #
 244 #CHECKME: dans la pratique c'est quoi la syntaxe utilisee pour le 5? (5) ou (5, 0)?
 245 class one2one(_column):
 246     _classic_read = False
 247     _classic_write = True
 248     _type = 'one2one'
 249
 250     def __init__(self, obj, string='unknown', **args):
 251         warnings.warn("The one2one field doesn't work anymore", DeprecationWarning)
 252         _column.__init__(self, string=string, **args)
 253         self._obj = obj
 254
 255     def set(self, cr, obj_src, id, field, act, user=None, context=None):
 256         if not context:
 257             context = {}
 258         obj = obj_src.pool.get(self._obj)
 259         self._table = obj_src.pool.get(self._obj)._table
 260         if act[0] == 0:
 261             id_new = obj.create(cr, user, act[1])
 262             cr.execute('update '+obj_src._table+' set '+field+'=%s where id=%s', (id_new, id))
 263         else:
 264             cr.execute('select '+field+' from '+obj_src._table+' where id=%s', (act[0],))
 265             id = cr.fetchone()[0]
 266             obj.write(cr, user, [id], act[1], context=context)
 267
 268     def search(self, cr, obj, args, name, value, offset=0, limit=None, uid=None):
 269         return obj.pool.get(self._obj).search(cr, uid, args+self._domain+[('name', 'like', value)], offset, limit)
 270
 271
 272 class many2one(_column):
 273     _classic_read = False
 274     _classic_write = True
 275     _type = 'many2one'
 276     _symbol_c = '%s'
 277     _symbol_f = lambda x: x or None
 278     _symbol_set = (_symbol_c, _symbol_f)
 279
 280     def __init__(self, obj, string='unknown', **args):
 281         _column.__init__(self, string=string, **args)
 282         self._obj = obj
 283
 284     def set_memory(self, cr, obj, id, field, values, user=None, context=None):
 285         obj.datas.setdefault(id, {})
 286         obj.datas[id][field] = values
 287
 288     def get_memory(self, cr, obj, ids, name, user=None, context=None, values=None):
 289         result = {}
 290         for id in ids:
 291             result[id] = obj.datas[id][name]
 292         return result
 293
 294     def get(self, cr, obj, ids, name, user=None, context=None, values=None):
 295         if not context:
 296             context = {}
 297         if not values:
 298             values = {}
 299         res = {}
 300         for r in values:
 301             res[r['id']] = r[name]
 302         for id in ids:
 303             res.setdefault(id, '')
 304         obj = obj.pool.get(self._obj)
 305         # build a dictionary of the form {'id_of_distant_resource': name_of_distant_resource}
 306         from orm import except_orm
 307         try:
 308             names = dict(obj.name_get(cr, user, filter(None, res.values()), context))
 309         except except_orm:
 310             names = {}
 311             iids = filter(None, res.values())
 312             for iiid in iids:
 313                 names[iiid] = '// Access Denied //'
 314
 315         for r in res.keys():
 316             if res[r] and res[r] in names:
 317                 res[r] = (res[r], names[res[r]])
 318             else:
 319                 res[r] = False
 320         return res
 321
 322     def set(self, cr, obj_src, id, field, values, user=None, context=None):
 323         if not context:
 324             context = {}
 325         obj = obj_src.pool.get(self._obj)
 326         self._table = obj_src.pool.get(self._obj)._table
 327         if type(values) == type([]):
 328             for act in values:
 329                 if act[0] == 0:
 330                     id_new = obj.create(cr, act[2])
 331                     cr.execute('update '+obj_src._table+' set '+field+'=%s where id=%s', (id_new, id))
 332                 elif act[0] == 1:
 333                     obj.write(cr, [act[1]], act[2], context=context)
 334                 elif act[0] == 2:
 335                     cr.execute('delete from '+self._table+' where id=%s', (act[1],))
 336                 elif act[0] == 3 or act[0] == 5:
 337                     cr.execute('update '+obj_src._table+' set '+field+'=null where id=%s', (id,))
 338                 elif act[0] == 4:
 339                     cr.execute('update '+obj_src._table+' set '+field+'=%s where id=%s', (act[1], id))
 340         else:
 341             if values:
 342                 cr.execute('update '+obj_src._table+' set '+field+'=%s where id=%s', (values, id))
 343             else:
 344                 cr.execute('update '+obj_src._table+' set '+field+'=null where id=%s', (id,))
 345
 346     def search(self, cr, obj, args, name, value, offset=0, limit=None, uid=None):
 347         return obj.pool.get(self._obj).search(cr, uid, args+self._domain+[('name', 'like', value)], offset, limit)
 348
 349
 350 class one2many(_column):
 351     _classic_read = False
 352     _classic_write = False
 353     _type = 'one2many'
 354
 355     def __init__(self, obj, fields_id, string='unknown', limit=None, **args):
 356         _column.__init__(self, string=string, **args)
 357         self._obj = obj
 358         self._fields_id = fields_id
 359         self._limit = limit
 360         #one2many can't be used as condition for defaults
 361         assert(self.change_default != True)
 362
 363     def get_memory(self, cr, obj, ids, name, user=None, offset=0, context=None, values=None):
 364         if not context:
 365             context = {}
 366         if self._context:
 367             context = context.copy()
 368             context.update(self._context)
 369         if not values:
 370             values = {}
 371         res = {}
 372         for id in ids:
 373             res[id] = []
 374         ids2 = obj.pool.get(self._obj).search(cr, user, [(self._fields_id, 'in', ids)], limit=self._limit, context=context)
 375         for r in obj.pool.get(self._obj).read(cr, user, ids2, [self._fields_id], context=context, load='_classic_write'):
 376             if r[self._fields_id] in res:
 377                 res[r[self._fields_id]].append(r['id'])
 378         return res
 379
 380     def set_memory(self, cr, obj, id, field, values, user=None, context=None):
 381         if not context:
 382             context = {}
 383         if self._context:
 384             context = context.copy()
 385         context.update(self._context)
 386         if not values:
 387             return
 388         obj = obj.pool.get(self._obj)
 389         for act in values:
 390             if act[0] == 0:
 391                 act[2][self._fields_id] = id
 392                 obj.create(cr, user, act[2], context=context)
 393             elif act[0] == 1:
 394                 obj.write(cr, user, [act[1]], act[2], context=context)
 395             elif act[0] == 2:
 396                 obj.unlink(cr, user, [act[1]], context=context)
 397             elif act[0] == 3:
 398                 obj.datas[act[1]][self._fields_id] = False
 399             elif act[0] == 4:
 400                 obj.datas[act[1]] = id
 401             elif act[0] == 5:
 402                 for o in obj.datas.values():
 403                     if o[self._fields_id] == id:
 404                         o[self._fields_id] = False
 405             elif act[0] == 6:
 406                 for id2 in (act[2] or []):
 407                     obj.datas[id2][self._fields_id] = id
 408
 409     def search_memory(self, cr, obj, args, name, value, offset=0, limit=None, uid=None, operator='like', context=None):
 410         raise _('Not Implemented')
 411
 412     def get(self, cr, obj, ids, name, user=None, offset=0, context=None, values=None):
 413         if not context:
 414             context = {}
 415         if self._context:
 416             context = context.copy()
 417         context.update(self._context)
 418         if not values:
 419             values = {}
 420         res = {}
 421         for id in ids:
 422             res[id] = []
 423         ids2 = obj.pool.get(self._obj).search(cr, user, [(self._fields_id, 'in', ids)], limit=self._limit, context=context)
 424         for r in obj.pool.get(self._obj)._read_flat(cr, user, ids2, [self._fields_id], context=context, load='_classic_write'):
 425             res[r[self._fields_id]].append(r['id'])
 426         return res
 427
 428     def set(self, cr, obj, id, field, values, user=None, context=None):
 429         if not context:
 430             context = {}
 431         if self._context:
 432             context = context.copy()
 433         context.update(self._context)
 434         if not values:
 435             return
 436         _table = obj.pool.get(self._obj)._table
 437         obj = obj.pool.get(self._obj)
 438         for act in values:
 439             if act[0] == 0:
 440                 act[2][self._fields_id] = id
 441                 obj.create(cr, user, act[2], context=context)
 442             elif act[0] == 1:
 443                 obj.write(cr, user, [act[1]], act[2], context=context)
 444             elif act[0] == 2:
 445                 obj.unlink(cr, user, [act[1]], context=context)
 446             elif act[0] == 3:
 447                 cr.execute('update '+_table+' set '+self._fields_id+'=null where id=%s', (act[1],))
 448             elif act[0] == 4:
 449                 cr.execute('update '+_table+' set '+self._fields_id+'=%s where id=%s', (id, act[1]))
 450             elif act[0] == 5:
 451                 cr.execute('update '+_table+' set '+self._fields_id+'=null where '+self._fields_id+'=%s', (id,))
 452             elif act[0] == 6:
 453                 obj.write(cr, user, act[2], {self._fields_id:id}, context=context or {})
 454                 ids2 = act[2] or [0]
 455                 cr.execute('select id from '+_table+' where '+self._fields_id+'=%s and id not in ('+','.join(map(str, ids2))+')', (id,))
 456                 ids3 = map(lambda x:x[0], cr.fetchall())
 457                 obj.write(cr, user, ids3, {self._fields_id:False}, context=context or {})
 458
 459     def search(self, cr, obj, args, name, value, offset=0, limit=None, uid=None, operator='like'):
 460         return obj.pool.get(self._obj).name_search(cr, uid, value, self._domain, offset, limit)
 461
 462
 463 #
 464 # Values: (0, 0,  { fields })    create
 465 #         (1, ID, { fields })    modification
 466 #         (2, ID)                remove
 467 #         (3, ID)                unlink
 468 #         (4, ID)                link
 469 #         (5, ID)                unlink all
 470 #         (6, ?, ids)            set a list of links
 471 #
 472 class many2many(_column):
 473     _classic_read = False
 474     _classic_write = False
 475     _type = 'many2many'
 476
 477     def __init__(self, obj, rel, id1, id2, string='unknown', limit=None, **args):
 478         _column.__init__(self, string=string, **args)
 479         self._obj = obj
 480         if '.' in rel:
 481             raise Exception(_('The second argument of the many2many field %s must be a SQL table !'\
 482                 'You used %s, which is not a valid SQL table name.')% (string,rel))
 483         self._rel = rel
 484         self._id1 = id1
 485         self._id2 = id2
 486         self._limit = limit
 487
 488     def get(self, cr, obj, ids, name, user=None, offset=0, context=None, values=None):
 489         if not context:
 490             context = {}
 491         if not values:
 492             values = {}
 493         res = {}
 494         if not ids:
 495             return res
 496         for id in ids:
 497             res[id] = []
 498         ids_s = ','.join(map(str, ids))
 499         limit_str = self._limit is not None and ' limit %d' % self._limit or ''
 500         obj = obj.pool.get(self._obj)
 501
 502         d1, d2 = obj.pool.get('ir.rule').domain_get(cr, user, obj._name)
 503         if d1:
 504             d1 = ' and ' + d1
 505
 506         cr.execute('SELECT '+self._rel+'.'+self._id2+','+self._rel+'.'+self._id1+' \
 507                 FROM '+self._rel+' , '+obj._table+' \
 508                 WHERE '+self._rel+'.'+self._id1+' in ('+ids_s+') \
 509                     AND '+self._rel+'.'+self._id2+' = '+obj._table+'.id '+d1
 510                 +limit_str+' order by '+obj._table+'.'+obj._order+' offset %s',
 511                 d2+[offset])
 512         for r in cr.fetchall():
 513             res[r[1]].append(r[0])
 514         return res
 515
 516     def set(self, cr, obj, id, name, values, user=None, context=None):
 517         if not context:
 518             context = {}
 519         if not values:
 520             return
 521         obj = obj.pool.get(self._obj)
 522         for act in values:
 523             if act[0] == 0:
 524                 idnew = obj.create(cr, user, act[2])
 525                 cr.execute('insert into '+self._rel+' ('+self._id1+','+self._id2+') values (%s,%s)', (id, idnew))
 526             elif act[0] == 1:
 527                 obj.write(cr, user, [act[1]], act[2], context=context)
 528             elif act[0] == 2:
 529                 obj.unlink(cr, user, [act[1]], context=context)
 530             elif act[0] == 3:
 531                 cr.execute('delete from '+self._rel+' where ' + self._id1 + '=%s and '+ self._id2 + '=%s', (id, act[1]))
 532             elif act[0] == 4:
 533                 cr.execute('insert into '+self._rel+' ('+self._id1+','+self._id2+') values (%s,%s)', (id, act[1]))
 534             elif act[0] == 5:
 535                 cr.execute('update '+self._rel+' set '+self._id2+'=null where '+self._id2+'=%s', (id,))
 536             elif act[0] == 6:
 537
 538                 d1, d2 = obj.pool.get('ir.rule').domain_get(cr, user, obj._name)
 539                 if d1:
 540                     d1 = ' and ' + d1
 541                 cr.execute('delete from '+self._rel+' where '+self._id1+'=%s AND '+self._id2+' IN (SELECT '+self._rel+'.'+self._id2+' FROM '+self._rel+', '+obj._table+' WHERE '+self._rel+'.'+self._id1+'=%s AND '+self._rel+'.'+self._id2+' = '+obj._table+'.id '+ d1 +')', [id, id]+d2)
 542
 543                 for act_nbr in act[2]:
 544                     cr.execute('insert into '+self._rel+' ('+self._id1+','+self._id2+') values (%s, %s)', (id, act_nbr))
 545
 546     #
 547     # TODO: use a name_search
 548     #
 549     def search(self, cr, obj, args, name, value, offset=0, limit=None, uid=None, operator='like'):
 550         return obj.pool.get(self._obj).search(cr, uid, args+self._domain+[('name', operator, value)], offset, limit)
 551
 552     def get_memory(self, cr, obj, ids, name, user=None, offset=0, context=None, values=None):
 553         result = {}
 554         for id in ids:
 555             result[id] = obj.datas[id].get(name, [])
 556         return result
 557
 558     def set_memory(self, cr, obj, id, name, values, user=None, context=None):
 559         if not values:
 560             return
 561         for act in values:
 562             # TODO: use constants instead of these magic numbers
 563             if act[0] == 0:
 564                 raise _('Not Implemented')
 565             elif act[0] == 1:
 566                 raise _('Not Implemented')
 567             elif act[0] == 2:
 568                 raise _('Not Implemented')
 569             elif act[0] == 3:
 570                 raise _('Not Implemented')
 571             elif act[0] == 4:
 572                 raise _('Not Implemented')
 573             elif act[0] == 5:
 574                 raise _('Not Implemented')
 575             elif act[0] == 6:
 576                 obj.datas[id][name] = act[2]
 577
 578
 579 # ---------------------------------------------------------
 580 # Function fields
 581 # ---------------------------------------------------------
 582 class function(_column):
 583     _classic_read = False
 584     _classic_write = False
 585     _type = 'function'
 586     _properties = True
 587
 588 #
 589 # multi: compute several fields in one call
 590 #
 591     def __init__(self, fnct, arg=None, fnct_inv=None, fnct_inv_arg=None, type='float', fnct_search=None, obj=None, method=False, store=False, multi=False, **args):
 592         _column.__init__(self, **args)
 593         self._obj = obj
 594         self._method = method
 595         self._fnct = fnct
 596         self._fnct_inv = fnct_inv
 597         self._arg = arg
 598         self._multi = multi
 599         if 'relation' in args:
 600             self._obj = args['relation']
 601         self._fnct_inv_arg = fnct_inv_arg
 602         if not fnct_inv:
 603             self.readonly = 1
 604         self._type = type
 605         self._fnct_search = fnct_search
 606         self.store = store
 607         if store:
 608             self._classic_read = True
 609             self._classic_write = True
 610             if type=='binary':
 611                 self._symbol_get=lambda x:x and str(x)
 612
 613         if type == 'float':
 614             self._symbol_c = float._symbol_c
 615             self._symbol_f = float._symbol_f
 616             self._symbol_set = float._symbol_set
 617
 618     def search(self, cr, uid, obj, name, args):
 619         if not self._fnct_search:
 620             #CHECKME: should raise an exception
 621             return []
 622         return self._fnct_search(obj, cr, uid, obj, name, args)
 623
 624     def get(self, cr, obj, ids, name, user=None, context=None, values=None):
 625         if not context:
 626             context = {}
 627         if not values:
 628             values = {}
 629         res = {}
 630         if self._method:
 631             res = self._fnct(obj, cr, user, ids, name, self._arg, context)
 632         else:
 633             res = self._fnct(cr, obj._table, ids, name, self._arg, context)
 634
 635         if self._type == 'binary' and context.get('bin_size', False):
 636             # convert the data returned by the function with the size of that data...
 637             res = dict(map(lambda (x, y): (x, tools.human_size(len(y or ''))), res.items()))
 638         return res
 639     get_memory = get
 640
 641     def set(self, cr, obj, id, name, value, user=None, context=None):
 642         if not context:
 643             context = {}
 644         if self._fnct_inv:
 645             self._fnct_inv(obj, cr, user, id, name, value, self._fnct_inv_arg, context)
 646     set_memory = set
 647
 648 # ---------------------------------------------------------
 649 # Related fields
 650 # ---------------------------------------------------------
 651
 652 class related(function):
 653
 654     def _fnct_search(self, tobj, cr, uid, obj=None, name=None, domain=None, context={}):
 655         self._field_get2(cr, uid, obj, context)
 656         i = len(self._arg)-1
 657         sarg = name
 658         while i>0:
 659             if type(sarg) in [type([]), type( (1,) )]:
 660                 where = [(self._arg[i], 'in', sarg)]
 661             else:
 662                 where = [(self._arg[i], '=', sarg)]
 663             if domain:
 664                 where = map(lambda x: (self._arg[i],x[1], x[2]), domain)
 665                 domain = []
 666             sarg = obj.pool.get(self._relations[i]['object']).search(cr, uid, where, context=context)
 667             i -= 1
 668         return [(self._arg[0], 'in', sarg)]
 669
 670     def _fnct_write(self,obj,cr, uid, ids, field_name, values, args, context=None):
 671         if values and field_name:
 672             self._field_get2(cr, uid, obj, context)
 673             relation = obj._name
 674             res = {}
 675             if type(ids) != type([]):
 676                 ids=[ids]
 677             objlst = obj.browse(cr, uid, ids)
 678             for data in objlst:
 679                 t_id=None
 680                 t_data = data
 681                 relation = obj._name
 682                 for i in range(len(self.arg)):
 683                     field_detail = self._relations[i]
 684                     relation = field_detail['object']
 685                     if not t_data[self.arg[i]]:
 686                         t_data = False
 687                         break
 688                     if field_detail['type'] in ('one2many', 'many2many'):
 689                         if self._type != "many2one":
 690                             t_id=t_data.id
 691                             t_data = t_data[self.arg[i]][0]
 692                     else:
 693                         t_id=t_data['id']
 694                         t_data = t_data[self.arg[i]]
 695                 if t_id:
 696                     obj.pool.get(field_detail['object']).write(cr,uid,[t_id],{args[-1]:values})
 697
 698     def _fnct_read(self, obj, cr, uid, ids, field_name, args, context=None):
 699         self._field_get2(cr, uid, obj, context)
 700         if not ids: return {}
 701         relation = obj._name
 702         res = {}.fromkeys(ids, False)
 703         objlst = obj.browse(cr, uid, ids)
 704         for data in objlst:
 705             if not data:
 706                 continue
 707             t_data = data
 708             relation = obj._name
 709             for i in range(len(self.arg)):
 710                 field_detail = self._relations[i]
 711                 relation = field_detail['object']
 712                 try:
 713                     if not t_data[self.arg[i]]:
 714                         t_data = False
 715                         break
 716                 except:
 717                     t_data = False
 718                     break
 719                 if field_detail['type'] in ('one2many', 'many2many'):
 720                     t_data = t_data[self.arg[i]][0]
 721                 else:
 722                     t_data = t_data[self.arg[i]]
 723             if type(t_data) == type(objlst[0]):
 724                 res[data.id] = t_data.id
 725             else:
 726                 res[data.id] = t_data
 727
 728         if self._type=='many2one':
 729             ids = filter(None, res.values())
 730             if ids:
 731                 ng = dict(obj.pool.get(self._obj).name_get(cr, uid, ids, context=context))
 732                 for r in res:
 733                     if res[r]:
 734                         res[r] = (res[r], ng[res[r]])
 735         return res
 736
 737     def __init__(self, *arg, **args):
 738         self.arg = arg
 739         self._relations = []
 740         super(related, self).__init__(self._fnct_read, arg, self._fnct_write, fnct_inv_arg=arg, method=True, fnct_search=self._fnct_search, **args)
 741
 742     def _field_get2(self, cr, uid, obj, context={}):
 743         if self._relations:
 744             return
 745         obj_name = obj._name
 746         for i in range(len(self._arg)):
 747             f = obj.pool.get(obj_name).fields_get(cr, uid, [self._arg[i]], context=context)[self._arg[i]]
 748             self._relations.append({
 749                 'object': obj_name,
 750                 'type': f['type']
 751
 752             })
 753             if f.get('relation',False):
 754                 obj_name = f['relation']
 755                 self._relations[-1]['relation'] = f['relation']
 756
 757 # ---------------------------------------------------------
 758 # Serialized fields
 759 # ---------------------------------------------------------
 760 class serialized(_column):
 761     def __init__(self, string='unknown', serialize_func=repr, deserialize_func=eval, type='text', **args):
 762         self._serialize_func = serialize_func
 763         self._deserialize_func = deserialize_func
 764         self._type = type
 765         self._symbol_set = (self._symbol_c, self._serialize_func)
 766         self._symbol_get = self._deserialize_func
 767         super(serialized, self).__init__(string=string, **args)
 768
 769
 770 class property(function):
 771
 772     def _fnct_write(self, obj, cr, uid, id, prop, id_val, val, context=None):
 773         if not context:
 774             context = {}
 775         (obj_dest,) = val
 776         definition_id = self._field_get(cr, uid, obj._name, prop)
 777
 778         property = obj.pool.get('ir.property')
 779         nid = property.search(cr, uid, [('fields_id', '=', definition_id),
 780             ('res_id', '=', obj._name+','+str(id))])
 781         while len(nid):
 782             cr.execute('DELETE FROM ir_property WHERE id=%s', (nid.pop(),))
 783
 784         nid = property.search(cr, uid, [('fields_id', '=', definition_id),
 785             ('res_id', '=', False)])
 786         default_val = False
 787         if nid:
 788             default_val = property.browse(cr, uid, nid[0], context).value
 789
 790         company_id = obj.pool.get('res.users').company_get(cr, uid, uid)
 791         res = False
 792         newval = (id_val and obj_dest+','+str(id_val)) or False
 793         if (newval != default_val) and newval:
 794             propdef = obj.pool.get('ir.model.fields').browse(cr, uid,
 795                     definition_id, context=context)
 796             res = property.create(cr, uid, {
 797                 'name': propdef.name,
 798                 'value': newval,
 799                 'res_id': obj._name+','+str(id),
 800                 'company_id': company_id,
 801                 'fields_id': definition_id
 802             }, context=context)
 803         return res
 804
 805     def _fnct_read(self, obj, cr, uid, ids, prop, val, context=None):
 806         if not context:
 807             context = {}
 808         property = obj.pool.get('ir.property')
 809         definition_id = self._field_get(cr, uid, obj._name, prop)
 810
 811         nid = property.search(cr, uid, [('fields_id', '=', definition_id),
 812             ('res_id', '=', False)])
 813         default_val = False
 814         if nid:
 815             d = property.browse(cr, uid, nid[0], context).value
 816             default_val = (d and int(d.split(',')[1])) or False
 817
 818         vids = [obj._name + ',' + str(id) for id in  ids]
 819         nids = property.search(cr, uid, [('fields_id', '=', definition_id),
 820             ('res_id', 'in', vids)])
 821
 822         res = {}
 823         for id in ids:
 824             res[id] = default_val
 825         for prop in property.browse(cr, uid, nids):
 826             res[int(prop.res_id.split(',')[1])] = (prop.value and \
 827                     int(prop.value.split(',')[1])) or False
 828
 829         obj = obj.pool.get(self._obj)
 830         existing_ids = obj.search(cr, uid, [('id','in',res.values())])
 831         deleted_ids = []
 832
 833         for res_id in res.values():
 834             if res_id and (res_id not in existing_ids):
 835                 if res_id not in deleted_ids:
 836                     cr.execute('DELETE FROM ir_property WHERE value=%s', ((obj._name+','+str(res_id)),))
 837                     deleted_ids.append(res_id)
 838         names = dict(obj.name_get(cr, uid, filter(None, res.values()), context))
 839         for r in res.keys():
 840             if res[r] and res[r] in names:
 841                 res[r] = (res[r], names[res[r]])
 842             else:
 843                 res[r] = False
 844         return res
 845
 846     def _field_get(self, cr, uid, model_name, prop):
 847         if not self.field_id.get(cr.dbname):
 848             cr.execute('SELECT id \
 849                     FROM ir_model_fields \
 850                     WHERE name=%s AND model=%s', (prop, model_name))
 851             res = cr.fetchone()
 852             self.field_id[cr.dbname] = res and res[0]
 853         return self.field_id[cr.dbname]
 854
 855     def __init__(self, obj_prop, **args):
 856         self.field_id = {}
 857         function.__init__(self, self._fnct_read, False, self._fnct_write,
 858                 (obj_prop, ), **args)
 859
 860     def restart(self):
 861         self.field_id = {}
 862
 863
 864 # vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
 865