javascript-Sequelize-从数组批量创建

我有一系列项目,需要将它们创建到数据库.

我需要检查每个插入是否成功,以便将新的成功= true作为json插入到新数组中(结果).

如果创建失败,请在成功(失败)之前插入同一数组.

这是代码：

create_cards: function (filter_id, is_filter, cards) {
    var result = [];
    var curr_card = null;
    for (var card in cards) {
        curr_card = this.create( {
            filter_id: filter_id,
            template: card.template,
            state: card.state,
            question_id: card.question_id || -1,
            answers: card.answers || -1,
            description: card.description || -1,
            correct_answer: card.correct_answer || -1
        }).then(function(card) {
            result.push({card: JSON.stringify(card.dataValues), success: true})
        },function(err) {
            result.push({card: card.dataValues, success: false})
        });
    }
    return results;
}

现在,有两个问题：

>循环结束后有“返回结果”,但是我得到了空数组.
我应该如何批量创建AND,然后每次创建,以确保创建成功？
>如何获得具有错误功能的卡？我只有’err’作为拒绝函数的变量.

谢谢！

解决方法:

create_cards: function(filter_id, is_filter, cards) {
  var result = [];

  var promises = cards.map(function(card) {
    return this.create({
        filter_id: filter_id,
        template: card.template,
        state: card.state,
        question_id: card.question_id || -1,
        answers: card.answers || -1,
        description: card.description || -1,
        correct_answer: card.correct_answer || -1
      })
      .then(function() {
        result.push({
          card: card,
          success: true
        });
      })
      .catch(function(err) {
        result.push({
          card: card,
          success: false
        });
        return Promise.resolve();
      });
  });

  return Promise.all(promises)
    .then(function() {
      return Promise.resolve(result);
    });
}

标签：sequelize-js,node-js,promise,express,javascript
来源： https://codeday.me/bug/20191026/1939412.html