ODOO - 如何更新两个级别的 o2m 字段关系

Question

Odoo 社区版本 11.0-20190311

我有一个父类 (dt_tst001)，其中一个 o2m 字段 (itens) 与一个类 (dt_tst002) 相关，另一个 o2m 字段 (tributos) 与第三个类 (dt_tst003) 相关。

在父类中还有另一个字段 (seguro_total)，当其值发生更改时，我需要重新计算 (_upd_seguro) 第二类中的字段 (seguro) 和第三类中的字段 (base_calculo, valor_tributo)。

第二类的重新计算工作正常，但第三类没有。

一步步调试，值更新，但检查表单时，显示原始值，并将此值发送到数据库。

示例代码：

class DT_TST001(models.Model):
    _name = "dt_tst001"
    _rec_name = "documento"

    documento = fields.Char(string = "Documento", size = 9, required = True)
    seguro_total = fields.Float(string = "Seguro total")
    itens = fields.One2many("dt_tst002", inverse_name = "documento_id", required = True)

    @api.onchange('seguro_total')
    def _upd_seguro(self):
        for item in self.itens:
            item.update({
                'seguro' : ((item.quantidade * item.valor_unitario) / item.valor_total) * self.seguro_total})

            for tributo in item.tributos:
                tributo.update({'base_calculo' : (item.valor_total + item.seguro)})
                tributo.update({'valor_tributo' : (item.valor_total + item.seguro) * tributo.aliquota / 100})


class DT_TST002(models.Model):
    _name = "dt_tst002"
    _rec_name = "documento_id"

    documento_id = fields.Many2one("dt_tst001", string = "Documento", required = True, ondelete='cascade')
    produto_id = fields.Char(string = "Produto", size = 15, required = True)
    quantidade = fields.Float(string="Quantidade", default = 0.00)
    valor_unitario = fields.Float(string="Valor unitário", required = True, default = 0.00)
    valor_total = fields.Float(string="Valor total", required = True, default = 0.00)
    seguro = fields.Float(string="Seguro", compute='_recalc_impostos', store=True)
    tributos = fields.One2many("dt_tst003", inverse_name = "item_id")

    @api.onchange('quantidade', 'valor_unitario', 'seguro')
    def _upd_valor_total(self):
        self.valor_total = (self.quantidade * self.valor_unitario) + self.seguro


class DT_TST003(models.Model):
    _name = "dt_tst003"

    item_id = fields.Many2one("dt_tst002", string = "Ítem", required = True, ondelete='cascade')
    tributo_id = fields.Char(string = "Tributo", size = 15, required = True)
    base_calculo = fields.Float(string = "Base de cálculo")
    aliquota = fields.Float(string = "Alíquota")
    valor_tributo = fields.Float(string = "Valor do tributo")

    @api.multi
    def name_get(self):
        result = []
        for m_tst003 in self:
            name = m_tst003.item_id.documento_id._name + " - " + m_tst003.item_id._name + " - " + m_tst003.tributo_id._name
            result.append((m_tst003.id, name))
        return result

示例视图定义：

<odoo>
    <data>
        <!-- VIEWS PARA NOTAS DE ENTRADA -->
        <record model="ir.ui.view" id="tst001_form">
            <field name="model">dt_tst001</field>
            <field name="name">tst001_form</field>
            <field name="arch" type="xml">
                <form string="Documento de entrada">
                    <group colspan="1" style="margin: 0px">
                        <field name="documento" style="text-transform: uppercase;"/>
                        <field name="seguro_total"/>
                    </group>
                    <notebook>
                        <page string="Ítens">
                            <group>
                                <h6>
                                    <field name="itens" context="{'form_view_ref' : 'dt_tst.tst002_form',
'tree_view_ref' : 'dt_tst.tst002_tree',
'default_itens' : itens}" force_save="1" class="oe_horizontal_separator oe_clear"/>
                                </h6>
                            </group>
                        </page>
                    </notebook>
                </form>
            </field>
        </record>

        <record model="ir.ui.view" id="tst001_tree">
            <field name="model">dt_tst001</field>
            <field name="name">tst001_tree</field>
            <field name="arch" type="xml">
                <tree string="Documentos de entrada">
                    <field name="documento"/>
                    <field name="seguro_total"/>
                </tree>
            </field>
        </record>

        <!-- ITENS -->
        <record model="ir.ui.view" id="tst002_form">
            <field name="model">dt_tst002</field>
            <field name="name">tst002_form</field>
            <field name="arch" type="xml">
                <form string="Ítem de documento de entrada">
                    <group style="margin: 0px">
                        <group colspan="4" style="margin: 0px">
                            <field name="produto_id"/>
                        </group>
                        <group colspan="4" style="margin: 0px">
                            <group style="margin: 0px">
                                <field name="quantidade"/>
                            </group>
                            <group style="margin: 0px">
                                <field name="valor_unitario"/>
                            </group>
                            <group colspan="4" style="margin: 0px">
                                <field name="valor_total" readonly="1" options='{"always_reload": True}' />
                            </group>
                        </group>
                        <group colspan="4" style="margin: 0px">
                            <field name="seguro"/>
                        </group>
                        <field name="valor_total" invisible="1"/>
                    </group>
                    <notebook>
                        <page string="Tributos">
                            <group>
                                <h6>
                                    <field name="tributos" context="{'form_view_ref' : 'dt_test.tst003_form',
'tree_view_ref' : 'dt_test.tst003_tree',
'default_tributos' : tributos,
'default_valor_total' : valor_total}" force_save="1" class="oe_horizontal_separator oe_clear"/>
                                </h6>
                            </group>
                        </page>
                    </notebook>
                </form>
            </field>
        </record>

        <record model="ir.ui.view" id="dt_fis.tst002_tree">
            <field name="model">dt_tst002</field>
            <field name="name">tst002_tree</field>
            <field name="arch" type="xml">
                <tree string="Ítens de documentos de entrada">
                    <field name="produto_id"/>
                    <field name="quantidade"/>
                    <field name="valor_unitario"/>

                    <!-- Enviar campos invisíveis para que seu conteúdo seja resgatado no formulário -->
                    <field name="seguro" invisible="1"/>
                    <field name="tributos" invisible="1"/>
                </tree>
            </field>
        </record>

        <!-- VIEWS PARA DOCUMENTOS DE ENTRADA E SAÍDA -->
        <record model="ir.ui.view" id="tst003_form">
            <field name="model">dt_tst003</field>
            <field name="name">tst003_form</field>
            <field name="arch" type="xml">
                <form string="Tributos de ítem de documento fiscal">
                    <sheet>
                        <group>
                            <field name="tributo_id"/>
                            <field name="base_calculo"/>
                            <field name="aliquota"/>
                            <field name="valor_tributo"/>
                        </group>
                    </sheet>
                </form>
            </field>
        </record>

        <record model="ir.ui.view" id="tst003_tree">
            <field name="model">dt_tst003</field>
            <field name="name">tst003_tree</field>
            <field name="arch" type="xml">
                <tree string="Tributos de ítem de documento fiscal">
                    <field name="tributo_id"/>
                    <field name="base_calculo"/>
                    <field name="aliquota"/>
                    <field name="valor_tributo"/>
                </tree>
            </field>
        </record>

        <record model="ir.actions.act_window" id="dt_test.tst001_action">
            <field name="name">Documentos de entrada - teste</field>
            <field name="res_model">dt_tst001</field>
            <field name="view_mode">tree,form</field>
            <field name="view_type">form</field>
            <field name="view_ids" eval="[(5, 0, 0),
(0, 0, {'view_mode': 'tree', 'view_id': ref('tst001_tree')}),
(0, 0, {'view_mode': 'form', 'view_id': ref('tst001_form')})]"/>
            <field name="view_type">form</field>
        </record>

        <menuitem name="Documentos de entrada" id="dt_test.tst001_menu" parent="dt_test.tst_menu_registros" action="dt_test.tst001_action" sequence="10"/>
    </data>
</odoo>

谢谢！

Answer 1

好吧，它似乎在第二类中起作用，因为类 DT_TST002 的 seguro 字段是基于 _recalc_impostos 函数计算的。它不使用on_change。还有一点需要注意，DT_TST001 和 DT_TST003 类之间没有关系。

根据您的评论，on_change 方法如下所示：

@api.onchange('seguro_total')
    def _upd_seguro(self):
        for item in self.itens:
            seguro = ((item.quantidade * item.valor_unitario) / item.valor_total) * self.seguro_total
            tributes = []
            for tributo in item.tributos:
                base_calculo = (item.valor_total + item.seguro)
                valor_tributo = (item.valor_total + item.seguro) * tributo.aliquota / 100
                tributes.append((1, tributo.id, {'base_calculo' : base_calculo, 'valor_tributo' : valor_tributo}))
            item.update({
                'seguro' : seguro
                'tributos' : tributes,
                })

另外，请注意，您可以按以下方式处理关系字段

(0, 0,  { values })    link to a new record that needs to be created with the given values dictionary
(1, ID, { values })    update the linked record with id = ID (write *values* on it)
(2, ID)                remove and delete the linked record with id = ID (calls unlink on ID, that will delete the object completely, and the link to it as well)
(3, ID)                cut the link to the linked record with id = ID (delete the relationship between the two objects but does not delete the target object itself)
(4, ID)                link to existing record with id = ID (adds a relationship)
(5)                    unlink all (like using (3,ID) for all linked records)
(6, 0, [IDs])          replace the list of linked IDs (like using (5) then (4,ID) for each ID in the list of IDs)