如何使用nodeJS + multer + sequelize存储pdf文件

Question

我正在使用 multer 将文件保存到临时文件夹，我想知道如何使用 sequelize 将此 pdf 文件存储在 postgres 数据库中。

迁移：

module.exports = {
  up: (queryInterface, Sequelize) => {
    return queryInterface.createTable('testeUploads', {
      id: {
        allowNull: false,
        autoIncrement: true,
        primaryKey: true,
        type: Sequelize.INTEGER
      },
      fileDocumento: {
        type: Sequelize.BLOB
      },
      createdAt: {
        allowNull: false,
        type: Sequelize.DATE
      },
      updatedAt: {
        allowNull: false,
        type: Sequelize.DATE
      }
    });
  },
  down: (queryInterface, Sequelize) => {
    return queryInterface.dropTable('testeUploads');
  }
};

我的模型：

    module.exports = (sequelize, DataTypes) => {
  const testeUpload = sequelize.define('testeUpload', {
    fileDocumento: DataTypes.BLOB
  }, {});
  testeUpload.associate = function(models) {
    // associations can be defined here
  };
  return testeUpload;
};

使用create方法时，fileDocument字段应该传什么？

Answer 1

您需要传递一个缓冲区对象。如果您不需要将文件存储在该临时文件夹中，您可以只将文件存储在内存中，multer 将文件作为缓冲区提供给您。

文档：
Multer Memory Storage
Sequelize Data Types 参见 BLOB

const express = require('express');
const app = express();
const port = 3000;
const multer  = require('multer');
const storage = multer.memoryStorage();
const upload = multer({ storage: storage });
app.post('/', upload.single('avatar'), function (req, res, next) {
  console.log(req.file);
  // req.file.buffer is what you want to pass to create
});

如何使用nodeJS + multer + sequelize存储pdf文件

How to store pdf file using nodeJS + multer + sequelize

postgresql

node.js

sequelize.js

multer