假设我有以下类(class):
class User < ActiveRecord::Base
def fullname
"#{self.first_name} #{self.last_name}"
end
end
我是否可以进入控制台并以某种方式在控制台中查看 fullname 方法的源代码输出?就像,它看起来像......
irb(main):010:0> omg_console_you_are_awesome_show_source(User.fullname)
[Fri Jun 29 14:11:31 -0400 2012] => def fullname
[Fri Jun 29 14:11:31 -0400 2012] => "#{self.first_name} #{self.last_name}"
[Fri Jun 29 14:11:31 -0400 2012] => end
或者真的有什么方法可以查看源代码吗?谢谢!
最佳答案
您还可以使用 pry (http://pry.github.com/ )这就像类固醇的IRB。你可以做这样的事情:
[1] pry(main)> show-source Array#each
From: array.c in Ruby Core (C Method):
Number of lines: 11
Owner: Array
Visibility: public
VALUE
rb_ary_each(VALUE ary)
{
long i;
RETURN_ENUMERATOR(ary, 0, 0);
for (i=0; i<RARRAY_LEN(ary); i++) {
rb_yield(RARRAY_PTR(ary)[i]);
}
return ary;
}
[2] pry(main)> show-doc Array#each
From: array.c in Ruby Core (C Method):
Number of lines: 11
Owner: Array
Visibility: public
Signature: each()
Calls block once for each element in self, passing that
element as a parameter.
If no block is given, an enumerator is returned instead.
a = [ "a", "b", "c" ]
a.each {|x| print x, " -- " }
produces:
a -- b -- c --
关于ruby-on-rails - 有没有办法从 Rails 控制台查看方法的源代码?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/11267014/