Ask*_*kar 8 pdf pdf-generation ruby-on-rails wkhtmltopdf ruby-on-rails-4
我可以下载pdf文件:
curl google.com | wkhtmltopdf - test.pdf
所以这意味着,wkhtmlpdf安装成功了.
但是,当我尝试通过访问http://localhost:3000/contacts/1.pdf它来生成pdf文件时挂起.在状态栏中显示:Waiting for localhost...
Rails服务器输出:
Started GET "/contacts/1.pdf" for 127.0.0.1 at 2013-07-28 21:45:06 +0900
ActiveRecord::SchemaMigration Load (0.1ms) SELECT "schema_migrations".* FROM "schema_migrations"
Processing by ContactsController#show as HTML
Parameters: {"id"=>"1"}
Contact Load (0.3ms) SELECT "contacts".* FROM "contacts" WHERE "contacts"."id" = ? LIMIT 1 [["id", "1"]]
Rendered contacts/show.html.erb within layouts/application (1.4ms)
Completed 200 OK in 99ms (Views: 57.0ms | ActiveRecord: 0.7ms)
的Gemfile:
gem 'pdfkit'
application.rb中:
config.middleware.use "PDFKit::Middleware"
根据PDFKit railscast,这应该足以生成pdf文件,只需添加.pdf...
更新:
show.html.erb:
<p id="notice"><%= notice %></p>
<p>
<strong>Name:</strong>
<%= @contact.name %>
</p>
<p>
<strong>Age:</strong>
<%= @contact.age %>
</p>
<%= link_to 'Edit', edit_contact_path(@contact) %> |
<%= link_to 'Back', contacts_path %>
布局/ application.html.erb:
<!DOCTYPE html>
<html>
<head>
<title>Pdftest</title>
<%= stylesheet_link_tag "application", media: "all", "data-turbolinks-track" => true %>
<%= javascript_include_tag "application", "data-turbolinks-track" => true %>
<%= csrf_meta_tags %>
</head>
<body>
<%= yield %>
</body>
</html>
更新2:
感谢@Arman H帮助我弄清楚我必须指定资产的绝对路径而不是相对路径.当我删除以下行时,我能够生成PDF文件:
<%= stylesheet_link_tag "application", media: "all", "data-turbolinks-track" => true %>
<%= javascript_include_tag "application", "data-turbolinks-track" => true %>
现在,我无法得到如何用绝对路径替换它.看来这篇文章就是我所需要的,但我仍然无法弄清楚这对我的情况会是怎样的.
问题是由于stylesheet_link_tag并javascript_include_tag使用相对URL,这通常会导致wkhtmltopdf从wkhtmltopdf运行的同一服务器加载资产时挂起.
使用资产的绝对URL解决了问题.
asset_host在Rails的配置中设置,这也影响stylesheet_link_tag和javascript_include_tag:
# Modify asset host config setting in `config/application.rb`
# Or create a new initializer: `config/initializers/wkhtmltopdf.rb`
config.action_controller.asset_host = "http://mysite.com"
# Or you can have different hosts for development (local) and production (CDN):
# In `config/environments/development.rb`
config.action_controller.asset_host = "http://localhost"
# In `config/environments/production.rb`
config.action_controller.asset_host = "http://d111111abcdef8.cloudfront.net"
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