Sequelize error: defineCall not defined in Index.js

问题

I've been receiving this sequelize error

/node_modules/sequelize/lib/sequelize.js:508
      this.importCache[path] = defineCall(this, DataTypes);
                           ^
    TypeError: defineCall is not a function
    at module.exports.Sequelize.import             (/node_modules/sequelize/lib/sequelize.js:508:32)
at   /models/Index.js:16:33
at Array.forEach (native)
at Object.<anonymous> (/Users/vincentporta/Desktop/RCB_Classwork/cesarcell/models/Index.js:15:4)
at Module._compile (module.js:409:26)
at Object.Module._extensions..js (module.js:416:10)
at Module.load (module.js:343:32)
at Function.Module._load (module.js:300:12)
at Module.require (module.js:353:17)
at require (internal/module.js:12:17)

I've narrowed it down to the commented code in my Index.js file below

"use strict";

var fs        = require("fs");
var path      = require("path");
var Sequelize = require("sequelize");
var config    = require(path.join(__dirname, '..', 'config',    'config.json'))[env];
var sequelize = new Sequelize(config.database, config.username,  config.password, config);
var db        = {};

fs
  .readdirSync(__dirname)
  .filter(function(file) {
    return (file.indexOf(".") !== 0) && (file !== "index.js");
  })

This commented code below breaks it //.forEach(function(file) { // var model = sequelize.import(path.join(__dirname, file)); // db[model.name] = model; // });

Object.keys(db).forEach(function(modelName) {
  if ("associate" in db[modelName]) {
    db[modelName].associate(db);
  }
});

db.sequelize = sequelize;
db.Sequelize = Sequelize;

module.exports = db;

Does anyone know why this error is occuring?

回答1:

This usually means you're trying to import a non-sequelize object. If the name of your index file is Index.js then you need to change it in your filter function (first letter is capital)

return (file.indexOf(".") !== 0) && (file !== "Index.js");

As it is case sensitive. Also check that there aren't any other files in your import folder which don't define sequelize model. If there are just add them to your filter function.

回答2:

I saw a similar problem just now and the problem was a file that was in the models folder that was not actually a database model. Ensure that your models folder only contains models for your database. Hopefully this helps!

回答3:

This can happen if you have a circular import, also.

来源：https://stackoverflow.com/questions/38217802/sequelize-error-definecall-not-defined-in-index-js

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sequelize.js