允许参数数组 [英] Permit array in params

问题描述

我有以下JSON:

{
    "name": "pizza",
    "ingredients": [
        {"name": "tomato", "amount": 3, "unit": "un"},
        {"name": "chesse", "amount": 100, "unit": "gr"}
    ]
}

然后我使用POST将这个JSON传递给我的控制器，那么我需要信任此参数，但是我无法允许哈希数组ingredients.

And I pass this JSON using POST to my controller, then I need to trust this paramters but I'm not be able to permit the array of hash ingredients.

如何允许它? 我尝试了params.permit(:ingredients).permit(:name, :amount, :unit).to_h，但是没有用.

How to permit it? I tried params.permit(:ingredients).permit(:name, :amount, :unit).to_h, but it doesn't work.

推荐答案

params.permit(:name, :ingredients => [:name, :amount,:unit])应该可以解决问题.

params.permit(:name, :ingredients => [:name, :amount,:unit]) should do the trick.

阅读嵌套参数.

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