Hmmm.... nobody's here yet! You and your friends should join the tournament.
<% end %>
<%# If user can join, and user hasn't joined already, show a join tournment button %>
<% if @tournament.joinable_by?(current_user) && !@tournament.players.include?(current_user) %>
<%= form_tag(tournament_path(@tournament), method: "put", role: :button) do %>
<%= submit_tag("Join Tournament") %>
<% end %>
<% elsif @tournament.players.include?(current_user) %>
<%= form_tag(tournament_path(@tournament), method: "put", role: :button) do %>
<%= submit_tag("Leave Tournament") %>
<% end %>
<% end %>
<%# If user is the host, let them start the tournment %>
<% if @tournament.check_permission(current_user, :edit) %>
<%= form_tag(tournament_path(@tournament), method: "put", role: :button) do %>
<%= submit_tag("Start Tournament", disabled: (@tournament.players.count < @tournament.min_players_per_team * @tournament.min_teams_per_match)) %>
<% end %>
<%= link_to 'Edit Tournament', edit_tournament_path(@tournament), role: :button %>
<%= link_to 'Cancel Tournament', @tournament, method: :delete, data: { confirm: 'Are you sure?' }, role: :button %>
<% end %>