/usr/lib/python2.7/dist-packages/trytond/model/model.py is in tryton-server 3.0.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#this repository contains the full copyright notices and license terms.
import copy
import collections
import warnings
from trytond.model import fields
from trytond.error import WarningErrorMixin
from trytond.pool import Pool, PoolBase
from trytond.pyson import PYSONEncoder
from trytond.transaction import Transaction
from trytond.url import URLMixin
from trytond.rpc import RPC
__all__ = ['Model']
class Model(WarningErrorMixin, URLMixin, PoolBase):
"""
Define a model in Tryton.
"""
_rec_name = 'name'
id = fields.Integer('ID', readonly=True)
@classmethod
def __setup__(cls):
super(Model, cls).__setup__()
cls.__rpc__ = {
'default_get': RPC(),
'fields_get': RPC(),
'on_change_with': RPC(instantiate=0),
'pre_validate': RPC(instantiate=0),
}
cls._error_messages = {}
# Copy fields
for attr in dir(cls):
if attr.startswith('_'):
continue
if isinstance(getattr(cls, attr), fields.Field):
setattr(cls, attr, copy.deepcopy(getattr(cls, attr)))
@classmethod
def __post_setup__(cls):
super(Model, cls).__post_setup__()
# Set _fields
cls._fields = {}
for attr in dir(cls):
if attr.startswith('_'):
continue
if isinstance(getattr(cls, attr), fields.Field):
cls._fields[attr] = getattr(cls, attr)
# Set _defaults
cls._defaults = {}
fields_names = cls._fields.keys()
for field_name in fields_names:
default_method = getattr(cls, 'default_%s' % field_name, False)
if isinstance(default_method, collections.Callable):
cls._defaults[field_name] = default_method
for k in cls._defaults:
assert k in cls._fields, \
'Default function defined in %s but field %s does not exist!' \
% (cls.__name__, k,)
# Update __rpc__
for field_name, field in cls._fields.iteritems():
if isinstance(field, (fields.Selection, fields.Reference)) \
and not isinstance(field.selection, (list, tuple)) \
and field.selection not in cls.__rpc__:
instantiate = 0 if field.selection_change_with else None
cls.__rpc__.setdefault(field.selection,
RPC(instantiate=instantiate))
for attribute in ('on_change', 'on_change_with', 'autocomplete'):
function_name = '%s_%s' % (attribute, field_name)
if getattr(field, attribute, False):
cls.__rpc__.setdefault(function_name, RPC(instantiate=0))
# Set name to fields
for name, field in cls._fields.iteritems():
if field.name is None:
field.name = name
else:
assert field.name == name, (
'Duplicate fields on %s: %s, %s'
% (cls, field.name, name))
@classmethod
def _get_name(cls):
'''
Returns the first non-empty line of the model docstring.
'''
lines = cls.__doc__.splitlines()
for line in lines:
line = line.strip()
if line:
return line
@classmethod
def __register__(cls, module_name):
"""
Add model in ir.model and ir.model.field.
"""
super(Model, cls).__register__(module_name)
pool = Pool()
Translation = pool.get('ir.translation')
Model_ = pool.get('ir.model')
ModelField = pool.get('ir.model.field')
model_id = Model_.register(cls, module_name)
ModelField.register(cls, module_name, model_id)
Translation.register_model(cls, module_name)
Translation.register_fields(cls, module_name)
Translation.register_error_messages(cls, module_name)
@classmethod
def default_get(cls, fields_names, with_rec_name=True):
'''
Return a dict with the default values for each field in fields_names.
If with_rec_name is True, rec_name will be added.
'''
pool = Pool()
Property = pool.get('ir.property')
value = {}
# get the default values defined in the object
for field_name in fields_names:
if field_name in cls._defaults:
value[field_name] = cls._defaults[field_name]()
field = cls._fields[field_name]
if (field._type == 'boolean'
and not field_name in value):
value[field_name] = False
if isinstance(field, fields.Property):
value[field_name] = Property.get(field_name, cls.__name__)
if (with_rec_name
and field._type in ('many2one',)
and value.get(field_name)):
Target = pool.get(field.model_name)
if 'rec_name' in Target._fields:
value[field_name + '.rec_name'] = Target(
value[field_name]).rec_name
value = cls._default_on_change(value)
if not with_rec_name:
for field in value.keys():
if field.endswith('.rec_name'):
del value[field]
return value
@classmethod
def _default_on_change(cls, value):
"""
Call on_change function for the default value
and return new default value
"""
pool = Pool()
res = value.copy()
val = {}
for field in value.keys():
if field in cls._fields:
if cls._fields[field].on_change:
inst = cls()
for fname in cls._fields[field].on_change:
setattr(inst, fname, value.get(fname))
val.update(getattr(inst, 'on_change_' + field)())
if cls._fields[field]._type in ('one2many',):
Target = pool.get(cls._fields[field].model_name)
for val2 in res[field]:
val2.update(Target._default_on_change(val2))
res.update(val)
return res
@classmethod
def fields_get(cls, fields_names=None):
"""
Return the definition of each field on the model.
"""
res = {}
pool = Pool()
Translation = pool.get('ir.translation')
FieldAccess = pool.get('ir.model.field.access')
#Add translation to cache
language = Transaction().language
trans_args = []
for field in (x for x in cls._fields.keys()
if ((not fields_names) or x in fields_names)):
trans_args.append((cls.__name__ + ',' + field, 'field', language,
None))
trans_args.append((cls.__name__ + ',' + field, 'help', language,
None))
if hasattr(cls._fields[field], 'selection'):
if (isinstance(cls._fields[field].selection, (tuple, list))
and ((hasattr(cls._fields[field],
'translate_selection')
and cls._fields[field].translate_selection)
or not hasattr(cls._fields[field],
'translate_selection'))):
sel = cls._fields[field].selection
for (key, val) in sel:
trans_args.append((cls.__name__ + ',' + field,
'selection', language, val))
Translation.get_sources(trans_args)
encoder = PYSONEncoder()
accesses = FieldAccess.get_access([cls.__name__])[cls.__name__]
for field in (x for x in cls._fields.keys()
if ((not fields_names) or x in fields_names)):
res[field] = {
'type': cls._fields[field]._type,
'name': field,
}
for arg in (
'string',
'readonly',
'states',
'size',
'required',
'translate',
'help',
'select',
'on_change',
'add_remove',
'on_change_with',
'autocomplete',
'sort',
'datetime_field',
'loading',
'filename',
'selection_change_with',
):
if getattr(cls._fields[field], arg, None) is not None:
res[field][arg] = copy.copy(getattr(cls._fields[field],
arg))
if not accesses.get(field, {}).get('write', True):
res[field]['readonly'] = True
if res[field].get('states') and \
'readonly' in res[field]['states']:
del res[field]['states']['readonly']
for arg in ('digits', 'invisible'):
if hasattr(cls._fields[field], arg) \
and getattr(cls._fields[field], arg):
res[field][arg] = copy.copy(getattr(cls._fields[field],
arg))
if (isinstance(cls._fields[field],
(fields.Function, fields.One2Many))
and not getattr(cls, 'order_%s' % field, None)):
res[field]['sortable'] = False
if ((isinstance(cls._fields[field], fields.Function)
and not cls._fields[field].searcher)
or cls._fields[field]._type in ('binary', 'sha')):
res[field]['searchable'] = False
else:
res[field]['searchable'] = True
if Transaction().context.get('language'):
# translate the field label
res_trans = Translation.get_source(
cls.__name__ + ',' + field, 'field',
Transaction().context['language'])
if res_trans:
res[field]['string'] = res_trans
help_trans = Translation.get_source(
cls.__name__ + ',' + field, 'help',
Transaction().context['language'])
if help_trans:
res[field]['help'] = help_trans
if hasattr(cls._fields[field], 'selection'):
if isinstance(cls._fields[field].selection, (tuple, list)):
sel = copy.copy(cls._fields[field].selection)
if (Transaction().context.get('language')
and ((hasattr(cls._fields[field],
'translate_selection')
and cls._fields[field].translate_selection)
or not hasattr(cls._fields[field],
'translate_selection'))):
# translate each selection option
sel2 = []
for (key, val) in sel:
val2 = Translation.get_source(
cls.__name__ + ',' + field, 'selection',
language, val)
sel2.append((key, val2 or val))
sel = sel2
res[field]['selection'] = sel
else:
# call the 'dynamic selection' function
res[field]['selection'] = copy.copy(
cls._fields[field].selection)
if res[field]['type'] in (
'one2many',
'many2many',
'many2one',
'one2one',
):
if hasattr(cls._fields[field], 'model_name'):
relation = copy.copy(cls._fields[field].model_name)
else:
relation = copy.copy(
cls._fields[field].get_target().__name__)
res[field]['relation'] = relation
res[field]['domain'] = copy.copy(cls._fields[field].domain)
res[field]['context'] = copy.copy(cls._fields[field].context)
res[field]['create'] = accesses.get(field, {}).get('create',
True)
res[field]['delete'] = accesses.get(field, {}).get('delete',
True)
if res[field]['type'] == 'one2many' \
and hasattr(cls._fields[field], 'field'):
res[field]['relation_field'] = copy.copy(
cls._fields[field].field)
if res[field]['type'] in ('datetime', 'time'):
res[field]['format'] = copy.copy(cls._fields[field].format)
if res[field]['type'] == 'selection':
res[field]['context'] = copy.copy(cls._fields[field].context)
if res[field]['type'] == 'dict':
res[field]['schema_model'] = cls._fields[field].schema_model
res[field]['domain'] = copy.copy(cls._fields[field].domain)
res[field]['context'] = copy.copy(cls._fields[field].context)
res[field]['create'] = accesses.get(field, {}).get('create',
True)
res[field]['delete'] = accesses.get(field, {}).get('delete',
True)
# convert attributes into pyson
for attr in ('states', 'domain', 'context', 'digits', 'size',
'add_remove', 'format'):
if attr in res[field]:
res[field][attr] = encoder.encode(res[field][attr])
if fields_names:
# filter out fields which aren't in the fields_names list
for i in res.keys():
if i not in fields_names:
del res[i]
return res
def on_change_with(self, fieldnames):
changes = {}
for fieldname in fieldnames:
method_name = 'on_change_with_%s' % fieldname
changes[fieldname] = getattr(self, method_name)()
return changes
def pre_validate(self):
pass
def __init__(self, id=None, **kwargs):
super(Model, self).__init__()
if id is not None:
id = int(id)
self.__dict__['id'] = id
self._values = None
parent_values = {}
for name, value in kwargs.iteritems():
if not name.startswith('_parent_'):
setattr(self, name, value)
else:
parent_values[name] = value
for name, value in parent_values.iteritems():
parent_name, field = name.split('.', 1)
parent_name = parent_name[8:] # Strip '_parent_'
parent = getattr(self, parent_name, None)
if parent is not None:
setattr(parent, field, value)
else:
setattr(self, parent_name, {field: value})
def __getattr__(self, name):
if name == 'id':
return self.__dict__['id']
elif self._values and name in self._values:
return self._values.get(name)
raise AttributeError("'%s' Model has no attribute '%s': %s"
% (self.__name__, name, self._values))
def __setattr__(self, name, value):
if name == 'id':
self.__dict__['id'] = value
return
super(Model, self).__setattr__(name, value)
def __getitem__(self, name):
warnings.warn('Use __getattr__ instead of __getitem__',
DeprecationWarning, stacklevel=2)
return getattr(self, name)
def __contains__(self, name):
return name in self._fields
def __int__(self):
return int(self.id)
def __str__(self):
return '%s,%s' % (self.__name__, self.id)
def __unicode__(self):
return u'%s,%s' % (self.__name__, self.id)
def __repr__(self):
if self.id < 0:
return "Pool().get('%s')(**%s)" % (self.__name__,
repr(self._default_values))
else:
return "Pool().get('%s')(%s)" % (self.__name__, self.id)
def __eq__(self, other):
if not isinstance(other, Model):
return NotImplemented
if self.id is None or other.id is None:
return False
return (self.__name__, self.id) == (other.__name__, other.id)
def __lt__(self, other):
if not isinstance(other, Model) or self.__name__ != other.__name__:
return NotImplemented
return self.id < other.id
# TODO: replace by total_ordering when 2.6 will be dropped
__gt__ = lambda self, other: not (self < other or self == other)
__le__ = lambda self, other: self < other or self == other
__ge__ = lambda self, other: not self < other
def __ne__(self, other):
if not isinstance(other, Model):
return NotImplemented
if self.id is None or other.id is None:
return True
return (self.__name__, self.id) != (other.__name__, other.id)
def __hash__(self):
return hash((self.__name__, self.id))
def __nonzero__(self):
return True
@property
def _default_values(self):
if self.id >= 0:
return self.id
values = {}
if self._values:
for fname, value in self._values.iteritems():
field = self._fields[fname]
if isinstance(field, fields.Reference):
if value is not None:
value = str(value)
elif isinstance(value, Model):
value = value._default_values
elif isinstance(value, list):
value = [r._default_values for r in value]
values[fname] = value
return values
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