Omniauth Linked in Ruby On Rails

def get_linkedin_user_data
     omniauth = request.env["omniauth.auth"]
     dat=omniauth.extra.raw_info
     linked_app_key = "xxxxxxx"
     linkedin_secret_key = "yyyyyyy"
     client = LinkedIn::Client.new(linked_app_key,linkedin_secret_key)
     client.authorize_from_access(omniauth['credentials']['token'],omniauth['credentials']['secret'])
     connections=client.connections(:fields => ["id", "first-name", "last-name","picture-url"])
     uid=omniauth['uid']
     token=omniauth["credentials"]["token"]
     secret=omniauth["credentials"]["secret"]
  #linked user data
    omniauth = request.env["omniauth.auth"]
     data             = omniauth.info
     user_name        = data["name"]
     user_email       = data["email"]
     user_nickname    = data["nickname"]
     user_firstname   = data["first_name"]
     user_last_name   = data["last_name"]
     user_location    = data["location"]
     user_description = data["description"]
     user_image       = data["image"]
     user_phone       = data["phone"]
     user_headline    = data["headline"]
     user_industry    = data["industry"]
        unless data["location"].nil?
         city,country = data["location"].split(',').map(&:strip)
        end
        dat= omniauth.extra.raw_info
        employers=dat.positions.values[1]
        employers.each do |emp|
           company_name = emp["company"]["name"]
           designation = emp["title"]
           start_date   =  emp.include?("startDate") ? emp["startDate"]["year"].to_s + "-#{emp["startDate"]["month"]}"+ "-01" : "-"
           end_date = emp.include?("endDate") ? emp["endDate"]["year"].to_s + "-#{emp["endDate"]["month"]}" + "-01": "-"
           currently_working = emp["isCurrent"]
                work=employers.last
        end
        educations=dat.educations.values[1]
        @old_edu = @profile.educations.collect{ |s| s.institute_name }
     educations.each do |school|
      institute_name = school["schoolName"]
      course = school["degree"]
      start_date = school["startDate"] ? school["startDate"]["year"].to_s + "-01" + "-01" : ""
      end_date = school["endDate"] ? school["endDate"]["year"].to_s + "-01" + "-01" : ""

     end
      unless connections.all.nil?
     ids=connections.all.map{ |friend| friend.id}
    end
              
  end