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PORails 3: How to render ERb template in rake task?
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  1. PORails 3: How to render ERb template in rake task?
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    copied!<p>I am rendering a pretty huge sitemap HTML file with rake. Unfortunately, the code breaks when I migrate to rails 3. My current code looks like this:</p> <pre><code>@controller = ActionController::Base.new @controller.request = ActionController::TestRequest.new @controller.instance_eval do @url = ActionController::UrlRewriter.new(request, {}) end # collect data, open output file file template = ERB.new(IO.read("#{RAILS_ROOT}/app/views/sitemap/index.html.erb")) f.puts(template.result(binding)) </code></pre> <p>This code worked in 2.3, but breaks in Rails 3 as url_for does not access @controller anymore, but controller. (I think that's why.)</p> <pre><code>undefined local variable or method `controller' for #&lt;Object:0x3794c&gt; /opt/local/lib/ruby/gems/1.8/gems/actionpack-3.0.1/lib/action_view/helpers/url_helper.rb:31:in `url_options' /opt/local/lib/ruby/gems/1.8/gems/actionpack-3.0.1/lib/action_dispatch/routing/url_for.rb:132:in `url_for' /opt/local/lib/ruby/gems/1.8/gems/actionpack-3.0.1/lib/action_view/helpers/url_helper.rb:99:in `url_for' (erb):5 /Users/me/Documents/Projects/zvg2/lib/tasks/zvg.rake:452 </code></pre> <p>I also tried creating an ActionView to do it like that:</p> <pre><code>av = ActionView::Base.new(Rails::Application::Configuration.new(Rails.root).view_path, { # my assigns }, @controller) av.class_eval do include ApplicationHelper end f.puts(av.render(:template =&gt; "sitemap/index.html")) </code></pre> <p>But the problem seems to be the same, although ActionView::Base.new takes my controller.</p> <pre><code>undefined local variable or method `controller' for nil:NilClass /opt/local/lib/ruby/gems/1.8/gems/activesupport-3.0.1/lib/active_support/whiny_nil.rb:48:in `method_missing' /opt/local/lib/ruby/gems/1.8/gems/actionpack-3.0.1/lib/action_view/helpers/url_helper.rb:31:in `url_options' /opt/local/lib/ruby/gems/1.8/gems/actionpack-3.0.1/lib/action_dispatch/routing/url_for.rb:132:in `url_for' /opt/local/lib/ruby/gems/1.8/gems/actionpack-3.0.1/lib/action_view/helpers/url_helper.rb:99:in `url_for' /opt/local/lib/ruby/gems/1.8/gems/actionpack-3.0.1/lib/action_dispatch/routing/url_for.rb:132:in `url_for' /opt/local/lib/ruby/gems/1.8/gems/actionpack-3.0.1/lib/action_view/helpers/url_helper.rb:99:in `url_for' /Users/me/Documents/Projects/zvg2/app/views/sitemap/index.html.erb:5:in `_app_views_sitemap_index_html_erb__757224102_30745030_0' /opt/local/lib/ruby/gems/1.8/gems/actionpack-3.0.1/lib/action_view/template.rb:135:in `send' /opt/local/lib/ruby/gems/1.8/gems/actionpack-3.0.1/lib/action_view/template.rb:135:in `render' /opt/local/lib/ruby/gems/1.8/gems/activesupport-3.0.1/lib/active_support/notifications.rb:54:in `instrument' /opt/local/lib/ruby/gems/1.8/gems/actionpack-3.0.1/lib/action_view/template.rb:127:in `render' /opt/local/lib/ruby/gems/1.8/gems/actionpack-3.0.1/lib/action_view/render/rendering.rb:59:in `_render_template' /opt/local/lib/ruby/gems/1.8/gems/activesupport-3.0.1/lib/active_support/notifications.rb:52:in `instrument' /opt/local/lib/ruby/gems/1.8/gems/activesupport-3.0.1/lib/active_support/notifications/instrumenter.rb:21:in `instrument' /opt/local/lib/ruby/gems/1.8/gems/activesupport-3.0.1/lib/active_support/notifications.rb:52:in `instrument' /opt/local/lib/ruby/gems/1.8/gems/actionpack-3.0.1/lib/action_view/render/rendering.rb:56:in `_render_template' /opt/local/lib/ruby/gems/1.8/gems/actionpack-3.0.1/lib/action_view/render/rendering.rb:26:in `render' /Users/me/Documents/Projects/zvg2/lib/tasks/zvg.rake:450 </code></pre> <p>What's the best practice for rendering a template with rake that uses url_for and link_to? I bet as Rails just got more modular, there should be an easy way for just this?</p> <p>Thanks in advance! Jan</p>
 

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