ActiveRecord create：传入属性数组

I would like to know if there is a Rails way to create multiple records by passing in an array of attributes.

我想知道是否有一种Rails方法通过传入一组属性来创建多个记录。

For instance, instead of

例如，而不是

MyModel.create!(attr_1: some_attr, attr_2: 1)
MyModel.create!(attr_1: some_attr, attr_2: 2)
MyModel.create!(attr_1: some_attr, attr_2: 3)
MyModel.create!(attr_1: some_attr, attr_2: 4)

I would like to do something like:

我想做的事情如下：

MyModel.create!(attr_1: some_attr, attr_2: [1,2,3,4])

But it does not work. Is there a similar way to achieve this without looping?

但它不起作用。有没有类似的方法来实现这一点没有循环？

1 个解决方案

#1

According the documentation you can create records from an array of hashes:

根据文档，您可以从散列数组中创建记录：

The attributes parameter can be either be a Hash or an Array of Hashes. These Hashes describe the attributes on the objects that are to be created.

attributes参数可以是Hash或Hashes数组。这些哈希描述了要创建的对象的属性。

 MyModel.create([{attr_1: some_attr, attr_2: 4}, {attr_1: some_attr, attr_2: 5}])