odoo二次开发基础

模型拓展

传统继承

能够添加修改字段，添加约束，添加修改方法

类继承

_name='library.book' #可省略
_inherit = 'library.book'

修改原表不会有新表产生

添加字段

from odoo import fields, models
 
class Book(models.Model):
    _inherit = 'library.book'
    is_available = fields.Boolean('Is Available?')

修改字段

class Book(models.Model):
...
    isbn = fields.Char(help="Use a valid ISBN-13 or ISBN-10.")
    publisher_id = fields.Many2one(index=True)

原型继承

_name='library.book2'
_inherit = 'library.book'

重新创建了一个新的模型，这个模型里面有模型1的字段和方法，支持多继承_inherit

单继承例子

class Inheritance0(models.Model):     
    _name = 'inheritance.0'     
    name = fields.Char()     
    def call(self):         
        return self.check("model 0")     
    def check(self, s):         
        return "This is {} record {}".format(s, self.name) 

class Inheritance1(models.Model):     
    _name = 'inheritance.1'     
    _inherit = 'inheritance.0'     
    def call(self):         
        return self.check("model 1")

多继承例子

模型就会包含这些 mixin 的所有字段和方法。
_inherit = ['mail.thread', 'mail.activity.mixin']

mail.thread提供在许多文档表单下方或右侧的消息面板功能，以及消息和通知相关逻辑。这在我们自己的模型中将经常会添加，下面就来一起学习下。
mail.activity.mixin模型提供待办任务计划。

         <form>
...
                <!-- mail mixin fields -->
                <div class="oe_chatter">
                    <field name="message_follower_ids" widget="mail_followers" />
                    <field name="activity_ids" widget="mail_activity" />
                    <field name="message_ids" widget="mail_thread" />
                </div>
            </form>

委托继承

#相当于两个多对一，可以读写子模型的字段，如果子模型里的字段重复,只能看到_inherits第一个子模型的字段
#不继承方法

class Child0(models.Model):     
    _name = 'delegation.child0'     
    field_0 = fields.Integer() 
class Child1(models.Model):     
    _name = 'delegation.child1'     
    field_1 = fields.Integer() 
class Delegating(models.Model):     
    _name = 'delegation.parent'     
    _inherits = {         
      'delegation.child0': 'child0_id',         
      'delegation.child1': 'child1_id',     
    }     
    child0_id = fields.Many2one('delegation.child0', required=True, ondelete='cascade')     
    child1_id = fields.Many2one('delegation.child1', required=True, ondelete='cascade')

代理继承内嵌模型

这种继承方式，除了本表的字段，还可以使用partner的所有字段

from odoo import fields, models
 
class Member(models.Model):
    _name = 'library.member'
    _description = 'Library Member'
    card_number = fields.Char()
    partner_id = fields.Many2one(
        'res.partner',
        delegate=True,
        ondelete='cascade',
        required=True)

视图拓展

继承视图

1.继承视图的xml ID
2.定位，然后添加字段
<?xml version="1.0"?>
<odoo>
    <record id="view_form_book_extend" model="ir.ui.view">
        <field name="name">Book: add Is Available? field</field>
        <field name="model">library.book</field>
        <field name="inherit_id" ref="library_app.view_form_book" />
        <field name="arch" type="xml">
            <field name="isbn" position="after">
                <field name="is_available" />
            </field>
        </field>
    </record>
</odoo>

修改数据

此案例展示的是修改权限组的名称

<record id="library_group_user" model="res.groups">
	<field name="name">User</field>
	<field name="category_id" ref="module_library_category"/>
	<field name="implied_ids" eval="[(4, ref('base.group_user'))]"/>
</record>

<odoo>
    <!-- Modify Group name -->
    <record id="library.library_group_user" model="res.groups">
        <field name="name">Librarian</field>
    </record>
</odoo>

方法拓展

重写方法，也可以通过super调用原方法

    @api.multi
    def _check_isbn(self):
        self.ensure_one()
        isbn = self.isbn.replace('-', '')
        digits = [int(x) for x in isbn if x.isdigit()]
        if len(digits) == 10:
            ponderators = [1, 2, 3, 4, 5, 6, 7, 8, 9]
            total = sum(a * b for a, b in zip(digits[:9], ponderators))
            check = total % 11
            return digits[-1] == check
        else:
            return super()._check_isbn()

继承 Web 控制器和模板

web控制器

from odoo import http
from odoo.addons.library_app.controllers.main import Books
 
class BookExtended(Books):
    @http.route()
    def list(self, **kwargs):
        response = super().list(**kwargs)
        if kwargs.get('available'):
            Book = http.request.env['library.book']
            books = Book.search([('is_available', '=', True)])
            response.qcontext['books'] = books
        return response

继承 QWeb 模板

<odoo>
    <template id="book_list_extended"
        name="Extended Book List"
        inherit_id="library_app.book_list_template">
        <xpath expr="//span[@t-field='book.publisher_id']" position="after">
            <t t-if="not book.is_available">
                <b>(Not Available)</b>
            </t>
        </xpath>
    </template>
</odoo>