如何从 Rails 页面中请求 Rails 页面？
某个操作必须根据 uri 参数加载 html 页面。它适用于所有有效的 uri，除了当前服务器的 uri 之外。有没有一种简单的方法可以从控制器内请求页面？
require 'uri'
class MainController < ApplicationController
def foo
uri = URI(params[:uri])
if uri.host =~ /localhost|mydomain\.com/
# what goes here?
else
@html = Net::HTTP.get(uri)
end
# Do something useful with @html...
end
end
# The code should work for http://localhost/foo?uri=http://apple.com/
# as well as for http://localhost/foo?uri=http://localhost/bar
A certain action must load an html page according a uri parameter. It works fine for all valid uris, except those of the current server. Is there an easy way to request a page from within a controller?
require 'uri'
class MainController < ApplicationController
def foo
uri = URI(params[:uri])
if uri.host =~ /localhost|mydomain\.com/
# what goes here?
else
@html = Net::HTTP.get(uri)
end
# Do something useful with @html...
end
end
# The code should work for http://localhost/foo?uri=http://apple.com/
# as well as for http://localhost/foo?uri=http://localhost/bar
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为什么要进行区分呢？如果没有有关您要完成的任务的更多详细信息，我只会为任何 URL 调用
Net::HTTP.get(uri)。显然，您应该过滤掉/foo以避免无限循环。Why make a distinction? Without more details regarding what you're trying to accomplish, I would just call
Net::HTTP.get(uri)for any URL. You should obviously filter out/footo avoid an infinite loop though.