ruby Sprintf KeyError

Question

当我在ruby中执行以下操作时：

template = "/home/%{:user}/%{:name}/%{:environment}/current"
values = {user: "firera", name: "firera_test", environment: "staging"}
template % values

我收到以下错误：

KeyError: key{:user} not found
        from (irb):3:in `%'
        from (irb):3

关键显然在那里，为什么说它无法找到它？

Answer 1

您错误地定义了模板。它应该看起来像：

template = "/home/%{user}/%{name}/%{environment}/current"
values = {user: "firera", name: "firera_test", environment: "staging"}
template % values
#=> "/home/firera/firera_test/staging/current"