Question

所以我有以下要求：

{"utf8"=>"✓",
 "student_work"=>{"work_experiences_attributes"=>{"1415498778636"=>{"company_name"=>"Company1",
 "start_year"=>"2014",
 "end_year"=>"2014",
 "job_title"=>"Title1",
 "job_description"=>"test1"},
 "1415498795509"=>{"company_name"=>"Company2",
 "start_year"=>"2014",
 "end_year"=>"2014",
 "job_title"=>"Title2",
 "job_description"=>"Test2"}}},
 "commit"=>"Next"}

或使其更容易：

student_work[work_experiences_attributes][1415498778636][company_name]:Company1
student_work[work_experiences_attributes][1415498778636][start_year]:1
student_work[work_experiences_attributes][1415498778636][start_year]:2014
student_work[work_experiences_attributes][1415498778636][end_year]:2
student_work[work_experiences_attributes][1415498778636][end_year]:2014
student_work[work_experiences_attributes][1415498778636][job_title]:Title1
student_work[work_experiences_attributes][1415498778636][job_description]:test1
student_work[work_experiences_attributes][1415498795509][company_name]:Company2
student_work[work_experiences_attributes][1415498795509][start_year]:3
student_work[work_experiences_attributes][1415498795509][start_year]:2014
student_work[work_experiences_attributes][1415498795509][end_year]:4
student_work[work_experiences_attributes][1415498795509][end_year]:2014
student_work[work_experiences_attributes][1415498795509][job_title]:Title2
student_work[work_experiences_attributes][1415498795509][job_description]:Test2

如何使用Ruby中的每个循环访问每个值？我还是Ruby的新手，请帮忙。感谢

更新这些数字（1415498778636和1415498795509）总是在变化，因此循环必须能够处理任何不同类型的数字

Answer 1

params['student_work']['work_experiences_attributes'].values.each do |hash|
  hash.each do |key, value|
    # ...
  end
end

Answer 2

实际上student_work[work_experiences_attributes]是哈希，所以你可以使用each方法。

http://www.ruby-doc.org/core-2.1.4/Hash.html#method-i-each

Answer 3

你的意思是回应而不是请求权利？你可以这样做：

attr=params[:student_work].keys.each do |key|
    key.to_i > 0
end[0] 
params[:student_work][attr].each do |key, value|
# do something
end

Ruby on Rails中的每个循环

3 个答案: