Best way to use Twitter Bootstrap Icons as Links in Ruby on Rails 3?

Question

What's the best way to use an icon provided by Twitter Bootstrap as a link in Rails 3?

Currently, I am using it like the pasted snippet, but the icon doesn't display when I use my tablet to see the webpage. I'm sure there's a better way to use the Twitter Bootstrap Icons as links on Rails 3.

<%= link_to(vote_against_mission_mission_path(:id => mission.id), :method => :post) do %> 

  <i class="icon-chevron-down blank-vote enlarge"></i>

<% end %><br />

<%= link_to(collect_mission_path(controller: "folders", action: "collect", id: mission.id)) do %>

    <i class="icon-heart blank-favorite enlarge" id="actions-centering"></i>

Answer 1

If you build a helper like this:

module BootstrapIconHelper
  def icon_link_to(path, opts = {}, link_opts = {})
    classes = []
    [:icon, :blank].each do |klass|
      if k = opts.delete(klass)
        classes << "#{klass}-#{k}"
      end
    end
    classes << "enlarge" if opts.delete(:enlarge)
    opts[:class] ||= ""
    opts[:class] << " " << classes.join(" ")
    link_to content_tag(:i, "", opts), path, link_opts
  end
end

you can write your links like this:

  <%= icon_link_to(
        vote_against_mission_mission_path(:id => mission.id),
        { :icon => "chevron-down", :blank => "vote", :enlarge => true },
        {:method => :post}
      ) %>
  <%= icon_link_to(
        collect_mission_path(controller: "folders", action: "collect", id: mission.id),
        { :icon => "heart", :blank => "favorite", :enlarge => true, id: "action-centering}
      ) %>

Answer 2

Unless I'm misunderstanding what you're after, way less rigamarole:

<%= link_to('', vote_against_mission_mission_path(:id => mission.id), :class => "chevron-down") %> 

Answer 3

I should create this helper:

module BootstrapHelper
  def icon(*names)
    content_tag(:i, nil, :class => icon_classes(names))
  end

  private
  def icon_classes(*names)
    names.map{ |name| "icon-#{name}" }
  end
end

And use like this:

link_to icon(:trash, :white), user_path(@user), method: :delete

Answer 4

The solution above is returning this:

<i class="icon-[:remove, :white]"></i>

I changed somethings, and now is working for me:

module BootstrapHelper
  def icon(*names)
    content_tag(:i, nil, :class => icon_classes(names))
  end

  private
  def icon_classes(*names)
    final = ""
    names[0].each do |n|
      final = final + "icon-" + n.to_s + " "
    end
    return final
  end
end

Now it returns it:

<i class="icon-remove icon-white "></i>

The use remains the same:

<%= link_to icon(:remove, :white), doc, :confirm => 'Are you sure?', :method => :delete %>