Question

My Ruby on Rails function should receive a boolean parameter, check it and, if it is true, do something.

  def isReady
     if (params[:ready] == true)
            doSomething()
     end
  end

However, with the example below we never get inside this if (but it enters the function), probably because the parameter is passed as a string instead of as a boolean. How can I pass boolean parameters properly, or convert them?

curl --data "ready=true" http://example.com/users/isReady

Answer 1

可能是因为参数是作为字符串而不是布尔值传递的。

正确。我用泛型 Ruby方式处理它的方式如下：

class String
  def to_b()
    self.downcase == "true"
  end
end

现在任何字符串都有to_b方法。你可以写

def ready?
  if params[:ready].to_b
    do_something
  end
end

Passing boolean parameters in Ruby on Rails

1 个答案: