Rubyonrails 有什么办法能把这写清楚吗

为此，您不需要WHEN条件，只需使用标志名称来判断是否需要启用或禁用该功能，如

def input
  variable = stdin "value"
  update_flag(value.upcase)
end

def update_flag(value)
  toggle_flag("flag_a", value)
  toggle_flag("flag_b", value)
end

def enable_feature?(name, flag)
  return true if flag == "BOTH"
  return false if flag == "NONE"

  flag.downcase == name
end

def toggle_flag(name, flag)
  if enable_feature?(name, flag)
    Featureflag.user(@id).enable(name.to_sym)
  else
    Featureflag.user(@id).disable(name.to_sym)
  end
end

UPDATE:个

根据建议:

在CASE语句较大的情况下

FLAGS = [
  "flag_a",
  "flag_b",
  "flag_c",
]

def input
  value = prompt_input("Enter value:").upcase
  update_flags(value)
end

def update_flag(value)
  FLAGS.each do { |flag_name| toggle_flag(flag_name, value) }
end

def enable_feature?(name, flag)
  return true if flag == "BOTH" || flag == "ALL"
  return false if flag == "NONE"

  flag.downcase == name
end

def toggle_flag(name, flag)
  if enable_feature?(name, flag)
    Featureflag.user(@id).enable(name.to_sym)
  else
    Featureflag.user(@id).disable(name.to_sym)
  end
end