如何在odoo中使用ORM方法从表中获得不同的价值

Question

在Odoo中，我有一个模型“电子邮件规则” ，其中有一列number_of_days 。

现在，我需要做的是从该模型中查找不同的number_of_days ，而无需进行火灾查询，这意味着我想使用ORM方法而不是查询。

我怎样才能做到这一点 ？ 我对此不太了解。

Odoo search_read和搜索方法从表中获取数据。

def search_read(self, cr, uid, domain=None, fields=None, offset=0, limit=None, order=None, context=None):
        """
        Performs a ``search()`` followed by a ``read()``.

        :param cr: database cursor
        :param user: current user id
        :param domain: Search domain, see ``args`` parameter in ``search()``. Defaults to an empty domain that will match all records.
        :param fields: List of fields to read, see ``fields`` parameter in ``read()``. Defaults to all fields.
        :param offset: Number of records to skip, see ``offset`` parameter in ``search()``. Defaults to 0.
        :param limit: Maximum number of records to return, see ``limit`` parameter in ``search()``. Defaults to no limit.
        :param order: Columns to sort result, see ``order`` parameter in ``search()``. Defaults to no sort.
        :param context: context arguments.
        :return: List of dictionaries containing the asked fields.
        :rtype: List of dictionaries.

        """


@api.returns('self')
    def search(self, cr, user, args, offset=0, limit=None, order=None, context=None, count=False):
        """ search(args[, offset=0][, limit=None][, order=None][, count=False])

        Searches for records based on the ``args``
        :ref:`search domain <reference/orm/domains>`.

        :param args: :ref:`A search domain <reference/orm/domains>`. Use an empty
                     list to match all records.
        :param int offset: number of results to ignore (default: none)
        :param int limit: maximum number of records to return (default: all)
        :param str order: sort string
        :param bool count: if True, only counts and returns the number of matching records (default: False)
        :returns: at most ``limit`` records matching the search criteria

        :raise AccessError: * if user tries to bypass access rules for read on the requested object.
        """

现在，我需要做的是先找出所有数据，然后通过pythonic方式使其具有唯一性，这是令人讨厌的。

因此，如果有人知道这一点的明智解决方案，那就太好了。

Answer 1

您可以使用distinct_field_get() 。
例如，如果您想获得不同的合作伙伴名称，则可以这样进行：

partners = self.env['res.partner']
values = partners.distinct_field_get(field='name', value='')
return set(values)