私有方法'被要求（NoMethodError）紅寶石

Question

獲取錯誤

"private method `gets' called for `ot,Room 203,Healthcare Info Session,2014,6,17,14,0\n":String (NoMethodError)" 

和不知道在哪裏我的代碼是錯誤的。

而且在appointments.txt第一行：

ot,Room 203,Healthcare Info Session,2014,6,17,14,0 

可有人請讓我知道需要我的代碼改變什麼：

appointments = [ ] 
file_object = File.open("appointments.txt", "r") 

while line = file_object.gets 
    fields = line.gets.chomp.split(',') 
    appointment_type = [0] 

    if appointment_type == 'ot' 
    location = fields[1] 
    purpose = fields[2] 
    year = fields[3].to_i 
    month = fields[4].to_i 
    day = fields[5].to_i 
    hour = fields[6].to_i 
    minute = fields[7].to_i 
    appt1 = OneTimeAppointment.new("Dentist", "Cleaning", 4, 45, 5, 20, 2017) 
    appointments.push(appt1) 
    else 
    location = fields[1] 
    purpose = fields[2] 
    hour = fields[3].to_i 
    minute = fields[4].to_i 
    day = fields[5].to_i 
    appt2 = MonthlyAppointment.new("Doctor", "Cold", 2, 30, 15) 
    appointments.push(appt2) 
    end 
end 

Answer 1

你不能在一個字符串調用gets。您在文件中調用gets檢索行，但你去該行出於某種原因調用gets。這是不正確的。

修復程序是這樣的：

File.readlines('appointments.txt') do |line| 
    fields = line.chomp.split(',') 

    # ... 
end 

如果您正在閱讀CSV數據，你可能要考慮使用隨紅寶石的CSV library。