Odoo 16：动态修改表单视图中Tree视图属性的教程

@api.model
def get_view(self, view_id=None, view_type='form', **options):
    # ...

# 正确获取当前记录ID的方式
if 'params' in self.env.context:
    active_id = self.env.context['params'].get('id')

from odoo import models, fields, api
from lxml import etree
import logging

_logger = logging.getLogger(__name__)

class StockPicking(models.Model):
    _inherit = "stock.picking"

    # 添加一个字段来存储Tree视图的分页限制
    tree_pagination_limit = fields.Integer(string="Tree 分页限制", default=0,
                                           help="设置此拣货单关联的明细行Tree视图的分页限制。0表示不设置限制。")

class StockPicking(models.Model):
    _inherit = "stock.picking"

    tree_pagination_limit = fields.Integer(string="Tree 分页限制", default=0,
                                           help="设置此拣货单关联的明细行Tree视图的分页限制。0表示不设置限制。")

    @api.model
    def get_view(self, view_id=None, view_type='form', **options):
        _logger.info("Custom get_view called for StockPicking")

        # 1. 获取原始视图定义
        result = super(StockPicking, self).get_view(view_id=view_id, view_type=view_type, **options)

        # 2. 仅对表单视图进行修改
        if view_type == 'form':
            # 3. 解析视图XML架构
            doc = etree.XML(result['arch'])

            # 4. 定位到特定的Tree视图 (例如：'move_ids_without_package'字段对应的Tree视图)
            # 这里的XPath表达式需要根据实际的表单视图XML结构进行调整
            for tree_node in doc.xpath("//field[@name='move_ids_without_package']/tree"):
                # 5. 从上下文中获取当前记录的ID
                current_record_id = None
                if 'params' in self.env.context:
                    current_record_id = self.env.context['params'].get('id')

                # 确保获取到了有效的记录ID
                if current_record_id:
                    try:
                        # 浏览当前记录
                        current_record = self.browse(current_record_id)
                        # 6. 根据记录的字段值动态设置Tree视图属性
                        if current_record and current_record.tree_pagination_limit > 0:
                            tree_node.set('limit', str(current_record.tree_pagination_limit))
                            _logger.info(f"为拣货单 {current_record.name} 设置明细Tree视图限制为 {current_record.tree_pagination_limit}")
                        elif current_record and 'limit' in tree_node.attrib:
                            # 如果限制设置为0，则移除之前可能设置的limit属性
                            del tree_node.attrib['limit']
                            _logger.info(f"为拣货单 {current_record.name} 移除明细Tree视图限制")
                    except Exception as e:
                        _logger.error(f"设置Tree视图限制时发生错误: {e}")

            # 7. 更新结果中的XML架构
            result['arch'] = etree.tostring(doc, encoding='unicode')

        return result

<!-- 示例：stock.picking 的表单视图片段 -->
<record id="view_picking_form" model="ir.ui.view">
    <field name="name">stock.picking.form</field>
    <field name="model">stock.picking</field>
    <field name="inherit_id" ref="stock.view_picking_form"/>
    <field name="arch" type="xml">
        <xpath expr="//field[@name='move_ids_without_package']" position="attributes">
            <!-- 可以在这里添加一些默认属性，或者确保该字段存在 -->
        </xpath>
        <xpath expr="//field[@name='move_ids_without_package']" position="after">
            <!-- 添加一个字段到表单中，用于设置动态限制 -->
            <field name="tree_pagination_limit"/>
        </xpath>
    </field>
</record>