ruby - 如何从此 Ruby 函数中删除重复项？

Question

谁能告诉我如何简化这个 Ruby 函数？

class Profile < ActiveRecord::Base

  before_create :set_defaults

  def set_defaults
    self.users_sort_column      = "created_at"      
    self.companies_sort_column  = "name"
    self.people_sort_column     = "last_name"
    self.projects_sort_column   = "name"
    self.invoices_sort_column   = "number"
    self.payments_sort_column   = "number"

    self.users_sort_direction     = "desc"      
    self.companies_sort_direction = "asc"
    self.people_sort_direction    = "asc"
    self.projects_sort_direction  = "asc"
    self.invoices_sort_direction  = "desc"
    self.payments_sort_direction  = "desc"
  end

end

里面重复的太多了。感谢您的帮助。

P.S:每个用户都应该能够更新他的个人资料，这就是我将所有这些值存储在数据库中而不是模型中的原因。

Answer 1

我觉得没有重复的代码可以这样写:

def set_defaults
  sort_column_direction = {
    users:      ["created_at",  "desc"],
    companies:  ["name",       "asc"],
    people:     ["last_name",  "asc"],
    projects:   ["name",        "asc"],
    invoices:   ["number",      "desc"],
    payments:   ["number",      "desc"]
  }
  sort_column_direction.each do |key,value|
    self.send("#{key}_sort_column=", value[0])
    self.send("#{key}_sort_direction=", value[1])
  end 
end