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模型是映射到数据关系的类。它将包括您将要存储的数据的所有必要字段和行为。最需要的是_name属性，因为它定义了模型的名称。在许多情况下，每个模型都与一个数据库表相关联。

Three types of models are:

三种类型的模型是：

· 1. Models

· 1. 模型

· 2. Abstract model

· 2. 抽象模型

· 3. Transient model

· 3. 瞬态模型

Models

模型

In the model itself, model fields are defined as attributes.

在模型本身中，模型字段被定义为属性。

From . import models, fields

class ExampleModel(models.Model):

_name = "model.name"

Field = fields.Char(string="field's label")

Abstract Model

抽象模型

Main super-class for regular database-persisted Odoo models.

All models in Odoo are created by inheriting from this class.

常规数据库的主超类持久化Odoo模型。

Odoo中的所有模型都是通过继承这个类创建的。

from . import models, fields

class AbstractModel(models.AbstractModel):

   _name = "model.name"

   Field = fields.Char(string="field's label")

Transient model

瞬态模型

Model super-class for transient records, they are vacuum-cleaned on a regular basis and are intended to be only temporarily persistent.

瞬态记录的模型超级类，它们会定期进行真空清洁，并且只打算暂时持久。

It has simplified access rights management. All users can create new records. But, they can only access the records they have created. Without any restrictions, all Transient Model records are accessible to the superuser.

它简化了访问权限管理。所有用户都可以创建新记录。但是，他们只能访问他们创建的记录。没有任何限制，超级用户可以访问所有瞬态模型记录。

from . import models, fields

class TransientModel(models.Transientmodel):

_name = "model name"

Field = fields.Char(string="field label")

Creating models

创建模型

In order to create a new model, we should add a python file describing it and then upgrade the module. The path which is used is relative to our add-on module’s path.

为了创建一个新模型，我们应该添加一个描述它的python文件，然后升级模块。所使用的路径与我们的附加模块的路径有关。

1. In the model directory, add a python file

1.在model目录中，添加一个python文件

example: Let us create a module named visa in that add a python file named visa_application.py

示例：让我们在其中创建一个名为visa的模块，并添加一个名称为visa_application.py的python文件

from Odoo import models, fields

class VisaApplication(models.Model):

_name = "visa.application"

name = fields.Char("Name")

2. Add a python initialization file and load the python file to it.

2. 添加一个python初始化文件并将python文件加载到其中。

I.e., Add the below code to the __init__.py file

即，将以下代码添加到__init__.py文件中

from . import visa_application

I.e., from . import filename

即，from.import 文件名

3. In order to have the models directory loaded by the module, edit the module’s python initialization file.

3.为了让模块加载models目录，请编辑模块的python初始化文件。

from . import models

4. From the apps menu in the user interface, upgrade the Odoo module. We can check if the model is added by activating the developer mode and going to General Settings > Technical > Database Structure> models and search for our model “demo.model” on that.

4.从用户界面的应用程序菜单中，升级Odoo模块。我们可以通过激活开发人员模式并转到“通用设置”>“技术”>“数据库结构”>“模型”来检查模型是否已添加，并在上面搜索我们的模型“demo.model”。