Question

我尝试在任何操作处理params之前预先处理to_ar2en_i ApplicationController params函数，我在application_controller.rb中有以下内容}：

# translates every params' entity from arabic to english 
before_action :param_convert_ar2en_i

private

def param_convert_ar2en_i h = nil, path = []
  h ||= params
  h.each_pair do |k, v|
    if v.respond_to?(:key?)
      param_convert_ar2en_i v, [path, k].flatten
    else
      # something like: 
      params[[path, k].flatten].to_ar2en_i 
    end
  end
end

问题是我不知道如何将to_ar2en_i应用于路径为params的嵌套[[path, k].flatten]。

有人可以帮我这个吗？

Answer 1

傻我！所有我需要做的只是访问params而不是尝试访问params[[path, k].flatten].to_ar2en_i中的h[k].to_ar2en_i而不是因为h在Ruby中通过引用传递，它将完成工作

def param_convert_ar2en_i h = nil, l = [], depth: 0
  h ||= params
  h.each_pair do |k, v|
    if v.respond_to? :key?
      param_convert_ar2en_i v, [l, k].flatten, depth: depth + 1
    else
      if h[k].respond_to? :each
        h[k].each { |i| i.to_ar2en_i if i.respond_to? :to_ar2en_i }
      else
        h[k].to_ar2en_i if h[k].respond_to? :to_ar2en_i 
      end
    end
  end
end

如何将函数应用于`params`的每个值

1 个答案: