ruby-on-rails - rails : Case insensitive params hash keys?

Question

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Answer 1

一种选择是在访问其值之前将参数哈希转换为不区分大小写处理键的哈希。

Ryan McGeary 在 https://stackoverflow.com/a/2030565/454094 上有一个不区分大小写哈希的示例实现，我已在下面复制:

require "active_support/hash_with_indifferent_access"

class CaseInsensitiveHash < HashWithIndifferentAccess
  # This method shouldn't need an override, but my tests say otherwise.
  def [](key)
    super convert_key(key)
  end

  protected

  def convert_key(key)
    key.respond_to?(:downcase) ? key.downcase : key
  end  
end

有了它，您可以:

CaseInsensitiveHash.new(params)[:verbose]