1 files changed, 91 insertions, 0 deletions
diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
new file mode 100644
index 0000000..903549b
--- /dev/null
+++ b/app/helpers/application_helper.rb
@@ -0,0 +1,91 @@
+module ApplicationHelper
+
+  def main_column_class
+    if has_side_column?
+      'with_side_column'
+    else
+      'full'
+    end
+  end
+
+  #
+  # two forms:
+  #
+  #  (1) link('page-name')
+  #  (2) link('label' => 'page-name')
+  #
+  # both accept optional options hash:
+  #
+  #  (1) link('page-name', :class => 'x')
+  #  (2) link('label' => 'page-name', :class => 'x')
+  #
+  def link(name, options=nil)
+    if name.is_a? Hash
+      klass = name.delete(:class)
+      label, name = name.to_a.first
+      if label.is_a? Symbol
+        label = I18n.t label
+      end
+    else
+      klass = options[:class] if options
+    end
+    if name.starts_with?('#')
+      path = name
+    else
+      page = StaticPage.find(name)
+      if page
+        label ||= page.title
+        path = page_path(page)
+      else
+        label = '[dead link]'
+        path = '/'
+      end
+    end
+    link_to label, path, {:class => klass}
+  end
+
+  def page_path(page)
+    '/' + ([I18n.locale.to_s] + page.path).join('/')
+  end
+
+  #
+  # allows a template to render a partial giving a relative path (relative to the calling template)
+  #
+  def render_local_template(arg, locals={})
+    caller_path = Pathname.new(caller.first.gsub(/^([^:]*).*$/, '\1'))
+    doc_root = Pathname.new(Rails.root + 'app/views')
+    template_path = File.dirname(caller_path.relative_path_from(doc_root).to_s) + '/' + arg
+    begin
+      render :template => template_path, :locals => locals
+    rescue ActionView::MissingTemplate => exc
+      "<!-- template missing %s -->" % template_path
+    end
+  end
+
+  def page_title
+    if @page
+      @page.props.title || @page.title
+    else
+      ""
+    end
+  end
+
+  #
+  # renders the content of a static page
+  # this is an ugly duplicate of the application controller render_page, because
+  # they call two different 'render' methods (controller and view renders behave differently).
+  # TODO: figure out how to combine into one helper_method.
+  #
+  def render_page(page)
+    begin
+      render :template => page.template_path
+    rescue ActionView::MissingTemplate => exc
+      begin
+        render :template => page.template_path(DEFAULT_LOCALE)
+      rescue
+        raise exc
+      end
+    end
+  end
+
+end