Question

我需要将“string”改为：string

此刻我有这个并且给出了这个：

Holidays.between(from, to, ":de")

但我需要这个

Holidays.between(from, to, :de)

请帮助！

Answer 1

String#to_sym是您需要在字符串上调用to_sym并将其变为符号

在将字符串转换为字符串之前，您需要删除字符串中的:（以获得所需的确切符号），因此下面的内容就是这样做

Holidays.between(from, to, ":de".sub(":","").to_sym) #=> Holidays.between(from, to, :de)

Answer 2

假设您使用的是Holidays gem，只需从字符串中删除冒号，即使用"de"代替":de"。宝石为您处理转换：

require 'holidays'

from = Date.civil(2014, 1, 1)
to = Date.civil(2014, 12, 31)

Holidays.between(from, to, "de")
#=> [{:date=>#<Date: 2014-01-01 ((2456659j,0s,0n),+0s,2299161j)>, :name=>"Neujahrstag", :regions=>[:de]}, {:date=>#<Date: 2014-04-18 ((2456766j,0s,0n),+0s,2299161j)>, :name=>"Karfreitag", :regions=>[:de]}, {:date=>#<Date: 2014-04-21 ((2456769j,0s,0n),+0s,2299161j)>, :name=>"Ostermontag", :regions=>[:de]}, {:date=>#<Date: 2014-05-01 ((2456779j,0s,0n),+0s,2299161j)>, :name=>"Tag der Arbeit", :regions=>[:de]}, {:date=>#<Date: 2014-05-29 ((2456807j,0s,0n),+0s,2299161j)>, :name=>"Christi Himmelfahrt", :regions=>[:de]}, {:date=>#<Date: 2014-06-09 ((2456818j,0s,0n),+0s,2299161j)>, :name=>"Pfingstmontag", :regions=>[:de]}, {:date=>#<Date: 2014-10-03 ((2456934j,0s,0n),+0s,2299161j)>, :name=>"Tag der Deutschen Einheit", :regions=>[:de]}, {:date=>#<Date: 2014-12-25 ((2457017j,0s,0n),+0s,2299161j)>, :name=>"1. Weihnachtstag", :regions=>[:de]}, {:date=>#<Date: 2014-12-26 ((2457018j,0s,0n),+0s,2299161j)>, :name=>"2. Weihnachtstag", :regions=>[:de]}]

目前还不清楚冒号来自哪里（看起来像一个错误），但你应该把它固定在那里，而不是转换字符串。

需要“String”为：String

2 个答案: