以轨道形式将4个输入保存为1

I have the following form fields..

我有以下表格字段..

<%= u.password_field 'pin[]', required: true, maxlength: 1, autofocus: true %>
<%= u.password_field 'pin[]', required: true, maxlength: 1 %>
<%= u.password_field 'pin[]', required: true, maxlength: 1 %>
<%= u.password_field 'pin[]', required: true, maxlength: 1 %>

I have a column in my database called pin (type: integer) which I want to save the 4 digit pin to from these fields. They have to be in 4 different inputs for the design aesthetic but I'm having trouble saving it to the database.

我的数据库中有一个名为pin（type：integer）的列，我想从这些字段中保存4位数的引脚。它们必须在4种不同的输入中用于设计美学，但我无法将其保存到数据库中。

So far I'm getting the error:

到目前为止，我收到了错误：

no implicit conversion of Symbol into Integer

没有将Symbol隐式转换为Integer

When I run the following:

当我运行以下内容时：

@user.pin = params.merge([:user][:pin_1], [:user][:pin_2], [:user][:pin_3], [:user][:pin_4])

I've tried using join(',') and split(',') together but I can't seem to get the 4 digit, as an integer.

我尝试过使用join（'，'）和split（'，'），但我似乎无法得到4位数，作为整数。

Any help would be much appreciated :)

任何帮助将非常感激：）

1 个解决方案

#1

If you do a

如果你做了

begin
     "#{params[:user][:pin_1]}#{params[:user][:pin_1]}#{params[:user][:pin_1]}#{params[:user][:pin_1]}".to_i
rescue Exception => e
    <error handling here>
end

That should do the trick, it's dirty but it should work. I would also do some javascript validation on the input to ensure that it is a number, not a letter.

这应该做的伎俩，它很脏但它应该工作。我还会对输入进行一些javascript验证，以确保它是一个数字，而不是一个字母。

#1