1.model B为model A的子字段
2.model B的formview中, 系统自动生成 parent字段=model

<!--子视图 form-->
        <record model="ir.ui.view" id="project_info_form">
            <field name="name">项目信息</field>
            <field name="model">dms_repair.project.info</field>
            <field name="arch" type="xml">
                <form>
                    <sheet>
                        <group>
                            <field name="company_id" invisible="0" default="parent.company_id"/>
                            <field name="parent_state" invisible="1"/>
                            <field name="repair_project_id" attrs="{'readonly': [('parent_state', '!=', 'draft')]}"/>
                            <field name="repair_code" attrs="{'readonly': [('parent_state', '!=', 'draft')]}"/>
                            <field name="error_code" attrs="{'readonly': [('parent_state', '!=', 'draft')]}"/>
                            <field name="error_describe" attrs="{'readonly': [('parent_state', '!=', 'draft')]}"/>
                            <field name="repair_reason" attrs="{'readonly': [('parent_state', '!=', 'draft')]}"/>
                            <field name="account_time" attrs="{'readonly': [('parent_state', '!=', 'draft')]}"/>
                            <field name="account_cost" attrs="{'readonly': [('parent_state', '!=', 'draft')]}"/>
                            <field name="remark" attrs="{'readonly': [('parent_state', '!=', 'draft')]}"/>
                            <field name="account_id" groups="account.group_account_user"
                                   domain="[('company_id', '=', parent.company_id), ('internal_type', '=', 'other')]"
                                   attrs="{'readonly': [('parent_state', '!=', 'draft')]}"/>
                            <field name="invoice_line_tax_ids" widget="many2many_tags" context="{'type':parent.type}"
                                   domain="[('type_tax_use','=','sale'),('company_id', '=', parent.company_id)]" options="{'no_create': True}"
                                   attrs="{'readonly': [('parent_state', '!=', 'draft')]}"/>
                        </group>
                        <group>
                            <field name="pay_date"
                                   attrs="{'readonly': [('parent_state', '!=', 'compensation')],
                                           'required': [('parent_state', '==', 'compensation')]}"/>
                            <field name="pay_cost"
                                   attrs="{'readonly': [('parent_state', '!=', 'compensation')],
                                           'required': [('parent_state', '==', 'compensation')]}"/>
                            <field name="back_suggestion" attrs="{'readonly': [('parent_state', '!=', 'compensation')]}"/>
                            <field name="partner_pay" attrs="{'readonly': [('parent_state', '!=', 'compensation')]}"/>
                        </group>
                    </sheet>
                </form>
            </field>
        </record>

屏幕快照 2018-01-11 下午5.21.02.png