为什么这段代码没有产生想要的结果? [英] Why doesn't this code produce the desired result?

问题描述

def check_beta_code
    beta_code_array = ['AAAAAAAAAA', 'BBBBBBBBBB', 'CCCCCCCCCC', 'DDDDDDDDDD', 'EEEEEEEEEE']

    if false == beta_code_array.include?(:beta_code)
        errors.add(:beta_code, "Invalid Beta Code")
    end
end

我创建了一个用户，user = User.new{:beta_code=>'AAAAAAAAAA'} 然后 user.save #=>false 然后我做 user.errors #=>{:beta_code=>["Invalid Beta Code"]}

I created a user, user = User.new{:beta_code=>'AAAAAAAAAA'} and then user.save #=> false and then i do user.errors #=>{:beta_code=>["Invalid Beta Code"]}

为什么即使 :beta_code 等于其中一个值，它也会给出错误?帮助！

Why is it giving the error even though :beta_code is equal to one of the values? Help!

推荐答案

看你的条件:

beta_code_array.include?(:beta_code)

您正在检查 beta_code_array 是否包含符号 :beta_code.我假设你打算传递一个字符串参数?我对 Rails 不太熟悉——如果这不是用户模型的正确形式，请纠正我.

You're checking if beta_code_array includes a symbol :beta_code. I assume you meant to pass on a string parameter? I'm not too familiar with Rails — please correct me if this isn't the right form for the User model.

def check_beta_code beta_code
    beta_code_array = ['AAAAAAAAAA', 'BBBBBBBBBB', 'CCCCCCCCCC', 'DDDDDDDDDD', 'EEEEEEEEEE']

    unless beta_code_array.include?(beta_code)
        errors.add(:beta_code, "Invalid Beta Code")
    end
end

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