[英]Sequelize.js - "is not associated to"
I have some issue with getting full data from db.我在从数据库获取完整数据时遇到了一些问题。 That are my models:
那是我的模型:
User用户
module.exports = function(sequelize, DataTypes) {
return sequelize.define('user', {
id: {
type: DataTypes.INTEGER(11),
allowNull: false,
primaryKey: true,
autoIncrement: true,
field: 'ID'
},
password: {
type: DataTypes.STRING(255),
allowNull: false,
field: 'password'
},
email: {
type: DataTypes.STRING(255),
allowNull: false,
unique: true,
field: 'email'
},
roleId: {
type: DataTypes.INTEGER(11),
allowNull: false,
references: {
model: 'role',
key: 'ID'
},
field: 'role_id'
}
}, {
timestamps: false,
tableName: 'user'
});
};
Role角色
module.exports = function(sequelize, DataTypes) {
return sequelize.define('role', {
id: {
type: DataTypes.INTEGER(11),
allowNull: false,
primaryKey: true,
autoIncrement: true,
field: 'ID'
},
name: {
type: DataTypes.STRING(255),
allowNull: false,
unique: true,
field: 'name'
},
description: {
type: DataTypes.STRING(255),
allowNull: false,
field: 'description'
},
permission: {
type: DataTypes.INTEGER(11),
allowNull: false,
field: 'permission'
}
}, {
timestamps: false,
tableName: 'role',
});};
I want to get object of one specific user including all role content.我想获得一个特定用户的 object,包括所有角色内容。 Somethink like
有点像
{
id: 4,
password: 'xxx',
email: 'adsads@saas.com',
role: {
id: 2,
name: 'admin'
description: 'ipsum ssaffa',
permission: 30
}
}
So I'm using:所以我正在使用:
User.findOne( { where: { id: req.userId }, include: [ Role ] } ).then( user =>{...});
but I get in the result err.message: "role is not associated to user"但我得到的结果是 err.message: "role is not associated to user"
And the simple question - what's wrong?简单的问题 - 怎么了? :)
:)
*to handle models I'm using sequelize-cli *处理模型我正在使用 sequelize-cli
You have to declare associations between your Models.您必须声明模型之间的关联。 If using Sequelize CLI make sure the static method associate is being called.
如果使用 Sequelize CLI,请确保正在调用 static 方法关联。 Example:
例子:
/models.index.js /models.index.js
const Category = require('./Category');
const Product = require('./Product');
const ProductTag = require('./ProductTag');
const Tag = require('./Tag');
Category.associate({Product});
Product.associate({Category,Tag});
Tag.associate({Product});
module.exports={Category,Product,ProductTag,Tag};
and then the association in Category.js然后是 Category.js 中的关联
'use strict';
const {Model,DataTypes} = require('sequelize');
const sequelize = require('../config/connection.js');
class Category extends Model {
/**
* Helper method for defining associations.
* This method is not a part of Sequelize lifecycle.
* The `models/index` file will call this method.
*/
static associate({Product}) {
// define association here
console.log('Category associated with: Product');
this.hasMany(Product, {
foreignKey: 'category_id',
onDelete: 'CASCADE'
});
}
}
Category.init({
category_id: {type: DataTypes.INTEGER, autoIncrement: true, allowNull: false, primaryKey: true},
category_name: {type: DataTypes.STRING, allowNull: false}
}, {
sequelize,
timestamps: false,
freezeTableName: true,
underscored: true,
modelName: "Category",
});
module.exports = Category;
You get this error because you didn't add associate between the models 因为没有在模型之间添加关联,所以出现此错误
base on your json I see that each user only has one role, so you can either use belongsTo in role model or hasOne in user model 基于您的json,我看到每个用户只有一个角色,因此您可以在角色模型中使用belongsTo或在用户模型中使用hasOne
Should be something like this: 应该是这样的:
User.js User.js
module.exports = function(sequelize, DataTypes) {
var user = sequelize.define('user', {
id: {
type: DataTypes.INTEGER(11),
allowNull: false,
primaryKey: true,
autoIncrement: true,
field: 'ID'
},
password: {
type: DataTypes.STRING(255),
allowNull: false,
field: 'password'
},
email: {
type: DataTypes.STRING(255),
allowNull: false,
unique: true,
field: 'email'
},
roleId: {
type: DataTypes.INTEGER(11),
allowNull: false,
references: {
model: 'role',
key: 'ID'
},
field: 'role_id'
}
}, {
timestamps: false,
tableName: 'user'
});
user.associate = function(models) {
user.hasOne(models.role, {foreignKey: 'id',sourceKey: 'roleId'});
}
return user;
};
Role.js Role.js
module.exports = function(sequelize, DataTypes) {
var role = sequelize.define('role', {
id: {
type: DataTypes.INTEGER(11),
allowNull: false,
primaryKey: true,
autoIncrement: true,
field: 'ID'
},
name: {
type: DataTypes.STRING(255),
allowNull: false,
unique: true,
field: 'name'
},
description: {
type: DataTypes.STRING(255),
allowNull: false,
field: 'description'
},
permission: {
type: DataTypes.INTEGER(11),
allowNull: false,
field: 'permission'
}
}, {
timestamps: false,
tableName: 'role',
});
role.associate = function(models) {
user.belongsTo(models.role, {foreignKey: 'id'});
}
return role;
};
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