【发布时间】：2019-10-25 15:08:24
【问题描述】：
我正在尝试使用 Sequelize model.create 函数，但一直遇到此错误：Unhandled rejection SequelizeDatabaseError: relation "users" does not exist。 User 类使我的表名全部小写而不是大写。我创建的表称为“用户”，但创建函数一直在尝试查找名为“用户”的表。
Executing (default): SELECT "id", "first_name", "last_name", "email", "username", "password", "dob", "created_at" AS "createdAt", "updated_at" AS "updatedAt" FROM "users" AS "User";
似乎User 类在与 postgres 通信时试图访问“用户”表。我尝试使用其他功能并一直遇到同样的问题。我的代码在下面。
/model/index.js
'use strict';
const fs = require('fs');
const path = require('path');
const Sequelize = require('sequelize');
const basename = path.basename(__filename);
const env = process.env.NODE_ENV || 'development';
const config = require(__dirname + '/../../config/db.js')[env];
const db = {};
let sequelize;
if (config.use_env_variable) {
sequelize = new Sequelize(process.env[config.use_env_variable], config);
} else {
sequelize = new Sequelize(config.database, config.username, config.password, config);
}
fs
.readdirSync(__dirname)
.filter(file => {
return (file.indexOf('.') !== 0) && (file !== basename) && (file.slice(-3) === '.js');
})
.forEach(file => {
const model = sequelize['import'](path.join(__dirname, file));
db[model.name] = model;
});
Object.keys(db).forEach(modelName => {
if (db[modelName].associate) {
db[modelName].associate(db);
}
});
db.sequelize = sequelize;
db.Sequelize = Sequelize;
module.exports = db;
/model/users.js
'use strict';
const bcrypt = require('bcrypt');
module.exports = (sequelize, DataTypes) => {
const User = sequelize.define('User', {
first_name: {
type: DataTypes.STRING,
allowNull: false,
unique: true
},
last_name: {
type: DataTypes.STRING,
allowNull: false
},
email: {
type: DataTypes.STRING,
allowNull: false,
unique: true
},
username: {
type: DataTypes.STRING,
allowNull: false,
unique: true
},
password: {
type: DataTypes.STRING,
allowNull: false
},
dob: {
type: DataTypes.DATE,
allowNull: false
}
}, {
underscored: true,
instanceMethods: {
validPassword(password) {
return bcrypt.compareSync(password, this.password);
}
}
});
User.beforeCreate((user) => {
user.email = user.email.toLowerCase();
user.first_name = user.first_name.charAt(0).toUpperCase(0) + user.first_name.slice(1);
user.last_name = user.last_name.charAt(0).toUpperCase(0) + user.last_name.slice(1);
return bcrypt.hash(user.password, 8).then((hash) => {
user.password = hash;
});
});
User.associate = function(models) {
// associations can be defined here
};
return User;
};
/migrations/20191025125151-create-user.js
'use strict';
module.exports = {
up: (queryInterface, Sequelize) => {
return queryInterface.createTable('Users', {
id: {
allowNull: false,
autoIncrement: true,
primaryKey: true,
type: Sequelize.INTEGER
},
first_name: {
type: Sequelize.STRING,
allowNull: false
},
last_name: {
type: Sequelize.STRING,
allowNull: false
},
email: {
type: Sequelize.STRING,
allowNull: false,
unique: true
},
username: {
type: Sequelize.STRING,
allowNull: false,
unique: true
},
password: {
type: Sequelize.STRING,
allowNull: false
},
dob: {
type: Sequelize.DATE,
allowNull: false
},
created_at: {
allowNull: false,
type: Sequelize.DATE,
defaultValue: Sequelize.literal('NOW()')
},
updated_at: {
allowNull: false,
type: Sequelize.DATE,
defaultValue: Sequelize.literal('NOW()')
}
}, {
timestamps: true,
underscored: true
});
},
down: (queryInterface, Sequelize) => {
return queryInterface.dropTable('Users');
}
};
/controllers/user
const { User } = require('../../db/models');
const signup = (req, res) => {
const { first_name, last_name, username, email, password, dob } = req.swagger.params.data.value;
User.create({
first_name,
last_name,
password,
dob,
username,
email
})
.then((user) => {
console.log(user);
res.json({message: 'Success'});
})
}
错误信息：
Executing (default): SELECT "id", "first_name", "last_name", "email", "username", "password", "dob", "created_at" AS "createdAt", "updated_at" AS "updatedAt" FROM "users" AS "User";
Unhandled rejection SequelizeDatabaseError: relation "users" does not exist
at Query.formatError (/home/ubu/projects/stat/node_modules/sequelize/lib/dialects/postgres/query.js:366:16)
at query.catch.err (/home/ubu/projects/stat/node_modules/sequelize/lib/dialects/postgres/query.js:72:18)
at bound (domain.js:301:14)
at runBound (domain.js:314:12)
at tryCatcher (/home/ubu/projects/stat/node_modules/bluebird/js/release/util.js:16:23)
at Promise._settlePromiseFromHandler (/home/ubu/projects/stat/node_modules/bluebird/js/release/promise.js:547:31)
at Promise._settlePromise (/home/ubu/projects/stat/node_modules/bluebird/js/release/promise.js:604:18)
at Promise._settlePromise0 (/home/ubu/projects/stat/node_modules/bluebird/js/release/promise.js:649:10)
at Promise._settlePromises (/home/ubu/projects/stat/node_modules/bluebird/js/release/promise.js:725:18)
at _drainQueueStep (/home/ubu/projects/stat/node_modules/bluebird/js/release/async.js:93:12)
at _drainQueue (/home/ubu/projects/stat/node_modules/bluebird/js/release/async.js:86:9)
at Async._drainQueues (/home/ubu/projects/stat/node_modules/bluebird/js/release/async.js:102:5)
at Immediate.Async.drainQueues (/home/ubu/projects/stat/node_modules/bluebird/js/release/async.js:15:14)
at runCallback (timers.js:794:20)
at tryOnImmediate (timers.js:752:5)
at processImmediate [as _immediateCallback] (timers.js:729:5)
【问题讨论】：
标签： node.js postgresql sequelize.js