如何使用Ruby on Rails向第三方发布POST并获得结果？

Question

我在.erb文件中有一个表单,用户可以在其中输入一些信息.然后我想对不同的URL(比如说www.3rdparty.com/api.php?f=add_entry)进行POST,它将回复0或1,表示成功或失败.这是正确的方法,特别是如果我想留在页面上的表单,然后根据响应显示一个对话框？我没有Ruby on Rails的经验,所以我甚至不确定这是否可行,或者我是否应该向控制器添加功能.因此,如果您能提供初学者详细信息,我将非常感激:)

谢谢,艾琳

Answer 1

require 'net/http'
url = URI.parse('http://www.3rdparty.com/api.php?f=add_entry')
args = {'arg1' => 'data' }
response = Net::HTTP.post_form(url, args)

看到:

http://www.rubyinside.com/nethttp-cheat-sheet-2940.html

# routes.rb
map.resources :books, :member => {:status => :get}#status route member optional - see below

# book_controller.rb
def new
  @book = Book.new

# new.html.erb
form_for @book, :url => books_path do |f|
  <%= f.fields_for :title -%>
  <%= f.fields_for :isbn -%>

#book_controller.rb
def create
  @book = Book.new params[:book]
  if @book.save
    redirect_to status_book_path @book #optional
    # no need to redirect. Create a create.html.erb and it will be rendered by default

#book.rb #model
before_create :verify_isbn

private
def verify_isbn
  require 'net/http'
  url = URI.parse('http://www.3rdparty.com/api.php?f=add_entry')
  args = {:isbn => isbn }#here the latter isbn is a field of your model
  response = Net::HTTP.post_form(url, args)
  errors.add(:isbn, "That isbn is not valid") unless response.to_i == 1
end