调用视图文件时如何传递参数?

问题描述

我使用Sinatra和Haml编写了一个网络表单，该表单将用于调用Ruby脚本.

I wrote a webform using Sinatra and Haml that will be used to call a Ruby script.

除一件事情外，其他一切似乎都不错:我需要从Sinatra/Ruby脚本中将参数传递给Haml视图文件.

Everything seems fine except for one thing: I need to pass an argument to a Haml view file from the Sinatra/Ruby script.

这是我的代码的一部分:

Here is a part of my code:

#!/usr/bin/env ruby
require 'rubygems'
require 'sinatra'
require 'haml'

get '/' do
  haml :index
end

post '/' do
  name = params[:name]
  vlan = params[:vlan]

  tmp = nil
  tmp = %x[./wco-hosts.rb -a -n #{name} -v #{vlan}]

  if tmp.include?("Error")
    haml :fail
  else
    haml :success
  end
end

如果脚本遇到错误，它将返回一个字符串，其中包括单词"Error".如果发生这种情况，我正在调用Haml文件，该文件将向用户显示错误页面.如果脚本没有遇到错误，它将返回成功页面.

If the script encounters an arror it will return a string including the word "Error". If this happens, I'm calling a Haml file which will show an error page to the users. If the script doesn't encounter an arror, it will return a success page.

我想在成功/失败页面中包括用户添加的新VM的名称.我的问题是我不知道如何在两个Haml文件中传递它.我搜索了一个解决方案，但没有找到任何东西.

I want to include, in the success/fail page, the name of the new VM the user added. My problem is that I have no clue how to pass it in both my Haml files. I searched for a solution, but did not find anything.

推荐答案

您可以使用:locals键将参数的哈希值传递给Haml方法:

You can pass a hash of parameters to the Haml method using the :locals key:

get '/' do
    haml :index, :locals => {:some_object => some_object}
end

通过这种方式，Haml文件中的Ruby代码可以访问some_object并呈现其中的任何内容，调用方法等.

This way the Ruby code in your Haml file can access some_object and render whatever content is in there, call methods etc.

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