one表内add many表数据，many表中的many2one字段，怎么默认选中one表id

[battle]

不选中可以保存，保存的时候会自动给many2one字段赋值。
但是我想在创建的时候就选中，怎么让他默认选中one表呢，因为在创建的时候我需要用到one表的id。

[digitalsatori]

就是在one还没出生的时候many就要嫁给他
可以在创建记录的时候用类似这样的语法创建many端的数据 {many_ids:[(0, 0, {many_field1:value1, many_field2: value2 ...})(0,0, {another line}...]}

完整的用法参见下面的说明：

          :class:`~odoo.fields.One2many` and
          :class:`~odoo.fields.Many2many` use a special "commands" format to
          manipulate the set of records stored in/associated with the field.

          This format is a list of triplets executed sequentially, where each
          triplet is a command to execute on the set of records. Not all
          commands apply in all situations. Possible commands are:

          ``(0, _, values)``
              adds a new record created from the provided ``value`` dict.
          ``(1, id, values)``
              updates an existing record of id ``id`` with the values in
              ``values``. Can not be used in :meth:`~.create`.
          ``(2, id, _)``
              removes the record of id ``id`` from the set, then deletes it
              (from the database). Can not be used in :meth:`~.create`.
          ``(3, id, _)``
              removes the record of id ``id`` from the set, but does not
              delete it. Can not be used on
              :class:`~odoo.fields.One2many`. Can not be used in
              :meth:`~.create`.
          ``(4, id, _)``
              adds an existing record of id ``id`` to the set. Can not be
              used on :class:`~odoo.fields.One2many`.
          ``(5, _, _)``
              removes all records from the set, equivalent to using the
              command ``3`` on every record explicitly. Can not be used on
              :class:`~odoo.fields.One2many`. Can not be used in
              :meth:`~.create`.
          ``(6, _, ids)``
              replaces all existing records in the set by the ``ids`` list,
              equivalent to using the command ``5`` followed by a command
              ``4`` for each ``id`` in ``ids``.

          .. note:: Values marked as ``_`` in the list above are ignored and
                    can be anything, generally ``0`` or ``False``.

[battle]

@digitalsatori 啊，谢谢。我记得这是手动create的时候用到的语法。我直接把one2many字段放到formview里面，直接在列表里add item，然后弹框是many表字段，many表中的many2one字段不会自动赋值前面one表内容（保存之后才会赋值到字段上）。如果用到这个语法创建内容，是需要重写create方法么

[digitalsatori]

如果是还没有保存的话，one的记录都没有生成，怎么把id给many端？

如果是已经保存过了，继续添加many端的记录的话，应该可以在view里定义默认值：
<field="many_ids" context="{'default_one_side_id': active_id}"/>

[battle]

@digitalsatori 非常感谢，这个方法可以，one保存过之后，context可以直接定义默认值。