[英]Rails Strong Parameters - Allow parameter to be an Array or String
Using Strong Parameters in my Rails Controller, how can I state that a permitted parameter can be a String
or an Array
? 在我的Rails控制器中使用强参数 ,如何声明允许的参数可以是
String
还是Array
?
My strong params: 我强大的参数:
class SiteSearchController < ApplicationController
[...abbreviated for brevity...]
private
def search_params
params.fetch(:search, {}).permit(:strings)
end
end
I'm wanting to POST
string(s) to search as a String
or as an Array
: 我想要将字符串
POST
作为String
或Array
进行搜索:
To search for 1 thing: 要搜索一件事:
{
"strings": "search for this"
}
OR, to search for multiple things: 或者,搜索多个东西:
{
"strings": [
"search for this",
"and for this",
"and search for this string too"
]
}
Update: 更新:
Purpose: I'm creating an API where my users can "batch" requests (getting responses via web-hooks
), or make a one-off request (getting an immediate response) all on the same endpoint. 目的:我正在创建一个API,我的用户可以“批量”请求(通过
web-hooks
获取响应),或者在同一个端点上发出一次性请求(立即获得响应)。 This question is only 1 small part of my requirement. 这个问题只是我要求的一小部分。
The next piece will be doing this same logic, where I'll allow the search to happen on multiple pages, ie: 下一篇文章将使用相同的逻辑,我将允许搜索在多个页面上进行,即:
[
{
"page": "/section/look-at-this-page",
"strings": "search for this"
},
{
"page": "/this-page",
"strings": [
"search for this",
"and for this",
"and search for this string too"
]
}
]
OR on a single page: 或在一个页面上:
{
"page": "/section/look-at-this-page",
"strings": "search for this"
}
(which will make me need to have Strong Params allow an Object
or an Array
to be sent. (这将使我需要强Params允许发送
Object
或Array
。
This seems like a basic thing, but I'm not seeing anything out there. 这似乎是一个基本的东西,但我没有看到任何东西。
I know that I could just make the strings
param an array, and then require searching for 1 thing to just have 1 value in the array... but I want to have this parameter be more robust than that. 我知道我可以让
strings
param成为一个数组,然后需要搜索1个东西才能在数组中只有1个值......但是我希望这个参数比这更健壮。
You can just permit the parameter twice - once for an array and once for a scalar value. 您可以只允许参数两次 - 一次用于数组,一次用于标量值。
def search_params
params.fetch(:search, {}).permit(:strings, strings: [])
end
You could check if params[:strings]
is an array and work from there 您可以检查
params[:strings]
是否是一个数组并从那里开始工作
def strong_params
if params[:string].is_a? Array
params.fetch(:search, {}).permit(strings: [])
else
params.fetch(:search, {}).permit(:strings)
end
end
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