如何在Ruby on Rails中从控制台调用控制器/视图助手方法?

当我加载脚本/控制台时，有时我想使用控制器或视图助手方法的输出。

有没有办法:

模拟一个请求? 从控制器实例调用方法说请求? 测试助手方法，无论是通过所说的控制器实例或其他方式?

当前回答

要调用helper，请使用helper对象:

$ ./script/console
>> helper.number_to_currency('123.45')
=> "R$ 123,45"

如果你想使用一个默认情况下没有包含的helper(比如，因为你从ApplicationController中删除了helper:all)，只需要包含这个helper。

>> include BogusHelper
>> helper.bogus
=> "bogus output"

至于如何处理控制器，我引用Nick的回答:

get '/posts/1' > response = app.response #您现在有了一个rails响应对象，就像集成测试一样 >反应。body #给你HTML >反应。cookie #散列的cookie # etc, etc

2009-07-21 19:15:06

其他回答

下面是如何以Refinery为例进行认证POST请求:

# Start Rails console
rails console
# Get the login form
app.get '/community_members/sign_in'
# View the session
app.session.to_hash
# Copy the CSRF token "_csrf_token" and place it in the login request.
# Log in from the console to create a session
app.post '/community_members/login', {"authenticity_token"=>"gT7G17RNFaWUDLC6PJGapwHk/OEyYfI1V8yrlg0lHpM=",  "refinery_user[login]"=>'chloe', 'refinery_user[password]'=>'test'}
# View the session to verify CSRF token is the same
app.session.to_hash
# Copy the CSRF token "_csrf_token" and place it in the request. It's best to edit this in Notepad++
app.post '/refinery/blog/posts', {"authenticity_token"=>"gT7G17RNFaWUDLC6PJGapwHk/OEyYfI1V8yrlg0lHpM=", "switch_locale"=>"en", "post"=>{"title"=>"Test", "homepage"=>"0", "featured"=>"0", "magazine"=>"0", "refinery_category_ids"=>["1282"], "body"=>"Tests do a body good.", "custom_teaser"=>"", "draft"=>"0", "tag_list"=>"", "published_at(1i)"=>"2014", "published_at(2i)"=>"5", "published_at(3i)"=>"27", "published_at(4i)"=>"21", "published_at(5i)"=>"20", "custom_url"=>"", "source_url_title"=>"", "source_url"=>"", "user_id"=>"56", "browser_title"=>"", "meta_description"=>""}, "continue_editing"=>"false", "locale"=>:en}

如果你得到一个错误，你可能会发现这些也很有用:

app.cookies.to_hash
app.flash.to_hash
app.response # long, raw, HTML

2014-05-27 22:02:14

如果你需要从控制台进行测试(在Ruby on Rails 3.1和4.1上进行测试):

调用控制器操作:

app.get '/'
   app.response
   app.response.headers  # => { "Content-Type"=>"text/html", ... }
   app.response.body     # => "<!DOCTYPE html>\n<html>\n\n<head>\n..."

控制器方法:

foo = ActionController::Base::ApplicationController.new
foo.public_methods(true||false).sort
foo.some_method

路线助手:

app.myresource_path     # => "/myresource"
app.myresource_url      # => "http://www.example.com/myresource"

视图助手:

foo = ActionView::Base.new

foo.javascript_include_tag 'myscript' #=> "<script src=\"/javascripts/myscript.js\"></script>"

helper.link_to "foo", "bar" #=> "<a href=\"bar\">foo</a>"

ActionController::Base.helpers.image_tag('logo.png')  #=> "<img alt=\"Logo\" src=\"/images/logo.png\" />"

呈现:

views = Rails::Application::Configuration.new(Rails.root).paths["app/views"]
views_helper = ActionView::Base.new views
views_helper.render 'myview/mytemplate'
views_helper.render file: 'myview/_mypartial', locals: {my_var: "display:block;"}
views_helper.assets_prefix  #=> '/assets'

ActiveSupport这样方法:

require 'active_support/all'
1.week.ago
=> 2013-08-31 10:07:26 -0300
a = {'a'=>123}
a.symbolize_keys
=> {:a=>123}

自由模块:

> require 'my_utils'
 => true
> include MyUtils
 => Object
> MyUtils.say "hi"
evaluate: hi
 => true

2012-02-06 12:07:31

在Ruby on Rails控制台中测试Helper方法的一种可能方法是:

Struct.new(:t).extend(YourHelper).your_method(*arg)

和重载做:

reload!; Struct.new(:t).extend(YourHelper).your_method(*arg)

2016-06-15 08:57:31

另一种方法是使用Ruby on Rails调试器。http://guides.rubyonrails.org/debugging_rails_applications.html上有一个关于调试的Ruby on Rails指南

基本上，使用-u选项启动服务器:

./script/server -u

然后在脚本中插入一个断点，在这个断点中您可以访问控制器、助手等。

class EventsController < ApplicationController
  def index
    debugger
  end
end

当您发出请求并点击代码中的该部分时，服务器控制台将返回一个提示符，然后您可以从命令提示符发出请求、查看对象等。完成后，只需输入'cont'继续执行。也有扩展调试的选项，但这至少可以让您开始。

2009-01-31 14:27:54