如何在Ruby on Rails中将数组从视图传递到控制器 [英] How to pass an array from view to controller in Ruby on Rails

问题描述

在我看来，我需要添加（动态）文本输入，我需要在控制器中获取他们的值（一旦用户提交相应的表单）。

In my view I need to add (dynamically) text inputs and I need to get theirs values in the controller (once the user submit the corresponding form).

我的输入是：

<input type="text" name="airports_input_origin" class="airports_input_origin" id="airports_input_origin_0" size="40"/> 

<input type="text" name="airports_input_origin" class="airports_input_origin" id="airports_input_origin_1" size="40"/>

等...

他们都有相同的'name'属性....所以我猜，如果我做

They all have the same 'name' attribute.... so I guessed that if I do

params[:airports_input_origin]

我会得到数组...但我错了...

I'd get the array ... but I was wrong...

如何获得这些值？

Thx！

推荐答案

您必须这样做：

<input type="text" name="airports_input_origin[0]" class="airports_input_origin" id="airports_input_origin_0" size="40"/> 

<input type="text" name="airports_input_origin[1]" class="airports_input_origin" id="airports_input_origin_1" size="40"/>

如果您在名称中标记数字，Rails会知道它是一个数组。

Rails understand that it's an array if you tag numbers like that within the name.

所以你可以有一个JavaScript函数，迭代所有输入，并在每次添加/删除目的地时重置它们的数字。使用正则表达式来替换数字，或者甚至可能甚至硬编码的名称，并更改[x]，如果这是所有必需的。

So you could have a JavaScript function that iterates over all the inputs and resets their numbers everytime a destination is added/deleted. Use regex to replace the numbers or you could probably even hard code the name and change the "[x]" if this is all that's required.

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