application_helper.rb

module ApplicationHelper

  def markdown(text)
    options = [:hard_wrap, :filter_html, :autolink]
    Redcarpet.new(text, *options).to_html.html_safe
  end

  # Use within views to set the page's HTML title
  def title(title = nil)
    default = ""

    if title
      content_for(:title) { title }
    else
      content_for?(:title) ? content_for(:title) : default
    end
  end

  # Use within views to set the page's HTML meta description
  def description(text)
    content_for(:description) { text }
  end

  # Displays all flash messages in appropriately named divs for easy styling
  def flash_messages
    messages = flash.keys.collect { |key| flash_message(key, flash[key]) }
    content_tag(:div, messages.to_s.html_safe, :id => "flash-messages")
  end

  # Format a single flash message
  def flash_message(type, message)
    content_tag(:div, :class => "flash-message #{type.to_s}") do
      content_tag :p, message
    end
  end

  def inherited_path(resource, action, text=action)
    resource.type ||= Post
    if action == "show"
      return link_to text, "#{resource.type.to_s.downcase}s/#{resource.title}".to_s
    elsif action == "edit"
      return link_to text, "#{resource.type.to_s.downcase}s/#{resource.title}edit".to_s
    elsif action == "destroy"
      if text == 'destroy'
        text = 'delete'
      end
      return link_to text, "#{resource.type.to_s.downcase}s/#{resource.title}".to_s, method: :delete, confirm: "Are you sure?"
    else
      return "post_resource_path(resource_object, action, link_text)"
    end
  end
end