Odoo - 添加自定义字段属性?

Odoo - add custom field attribute?

有没有办法在 Odoo 中添加自定义字段属性?例如,每个字段都有属性 help,您可以在其中输入为用户解释该字段的消息。所以我想添加自定义属性,这样会改变字段对所有类型字段的作用方式。

我想添加到 Field class,这样所有字段都会获得该属性。但似乎无论我做什么,Odoo 都看不到添加了这样的属性。

如果我简单地添加新的自定义属性,例如:

some_field = fields.Char(custom_att="hello")

那就干脆无视了。我需要通过方法 fields_get 获取它,它可以 return 想要的属性值(信息它的作用:

def fields_get(self, cr, user, allfields=None, context=None, write_access=True, attributes=None):
    """ fields_get([fields][, attributes])

    Return the definition of each field.

    The returned value is a dictionary (indiced by field name) of
    dictionaries. The _inherits'd fields are included. The string, help,
    and selection (if present) attributes are translated.

    :param allfields: list of fields to document, all if empty or not provided
    :param attributes: list of description attributes to return for each field, all if empty or not provided
    """

所以调用它,不会 return 我的自定义属性(它确实 return Odoo 最初定义的属性)。

我还尝试更新 _slots(使用猴子补丁或仅通过更改源代码进行测试) Field class 中的属性,但似乎还不够。因为我的属性还是被忽略了。

from openerp import fields

original_slots = fields.Field._slots

_slots = original_slots
_slots['custom_att'] = None

fields.Field._slots = _slots

有谁知道如何正确地为字段添加新的自定义属性?

只有在您自己的服务器上 运行 OpenERP/ODOO 才能做到这一点(换句话说,不是您无法访问其代码的云版本)。

您需要修改 <base>/osv/fields.py 文件并将您的更改添加到文件底部的 field_to_dict 函数(基础 _column class 已经保存为您提供额外的关键字参数——至少在 7.0 版中是这样):

def field_to_dict(model, cr, user, field, context=None): 
    res = {'type': field._type}
    ...
    ...
    for arg in ('string', 'readonly', ...) :

您需要在长长的属性列表中的某处插入您感兴趣的属性的名称。

或者,您可以更新 _column.__init__ 以保存额外参数的名称,并更新 field_to_dict 以包含它们(未经测试):

diff -r a30d30db3cd9 osv/fields.py
--- a/osv/fields.py Thu Jun 09 17:18:29 2016 -0700
+++ b/osv/fields.py Mon Jun 13 18:11:26 2016 -0700
@@ -116,23 +116,24 @@ class _column(object):
         self._context = context
         self.write = False
         self.read = False
         self.view_load = 0
         self.select = select
         self.manual = manual
         self.selectable = True
         self.group_operator = args.get('group_operator', False)
         self.groups = False  # CSV list of ext IDs of groups that can access this field
         self.deprecated = False # Optional deprecation warning
-        for a in args:
-            if args[a]:
-                setattr(self, a, args[a])
+        self._user_args = ()
+        for name, value in args:
+            setattr(self, name, value or False)
+            self._user_args += name

     def restart(self):
         pass

     def set(self, cr, obj, id, name, value, user=None, context=None):
         cr.execute('update '+obj._table+' set '+name+'='+self._symbol_set[0]+' where id=%s', (self._symbol_set[1](value), id))

     def get(self, cr, obj, ids, name, user=None, offset=0, context=None, values=None):
         raise Exception(_('undefined get method !'))

@@ -1559,20 +1560,22 @@ def field_to_dict(model, cr, user, field
         res['o2m_order'] = field._order or False
     if isinstance(field, many2many):
         (table, col1, col2) = field._sql_names(model)
         res['m2m_join_columns'] = [col1, col2]
         res['m2m_join_table'] = table
     for arg in ('string', 'readonly', 'states', 'size', 'group_operator', 'required',
             'change_default', 'translate', 'help', 'select', 'selectable', 'groups',
             'deprecated', 'digits', 'invisible', 'filters'):
         if getattr(field, arg, None):
             res[arg] = getattr(field, arg)
+    for arg in field._user_args:
+        res[arg] = getattr(field, arg)

     if hasattr(field, 'selection'):
         if isinstance(field.selection, (tuple, list)):
             res['selection'] = field.selection
         else:
             # call the 'dynamic selection' function
             res['selection'] = field.selection(model, cr, user, context)
     if res['type'] in ('one2many', 'many2many', 'many2one'):
         res['relation'] = field._obj
         res['domain'] = field._domain(model) if callable(field._domain) else field._domain

假设 v9

fields_get 的结果是模型上定义的字段的摘要,the code shows that it will only add the attribute if the description was filled. It will fetch the description of the current field by calling field.get_description

因此,为了确保您的属性被插入到此 self.description_attrs 中,您需要添加一个以 _description_customatt 开头的属性或方法(customatt 部分来自您的示例)并将 return 所需的数据。

我没有 运行 对此进行任何测试,但您可以查看字段的代码及其实际 return 的属性。例如帮助属性描述(src)

def _description_help(self, env):
  if self.help and env.lang:
    model_name = self.base_field.model_name
    field_help = env['ir.translation'].get_field_help(model_name)
    return field_help.get(self.name) or self.help
  return self.help