Client Side Validations creating "no implicit conversion of Fixnum into String" error

Question

I'm getting a "no implicit conversion of Fixnum into String" error with client-side-validations. Can't find anything on SO regarding this. Code is as follows:

Form in the view:

<% @tournament.sub_tournaments.each_with_index do |sub, i| %>
  <%= f.fields_for :sub_tournaments, sub, :validate => true do |sub_form| %>
    <div class="tab-content match-content hide">
      <span class="match_fields"></span>
      <fieldset class="emty">     
        <legend>Match</legend>
        <div class="add-item add_match">
      <% if i == 1 %>
        <%= link_to_add_matches_fields(sub_form, :player_matches, i) %>
      <% else %>
        <%= link_to_add_matches_fields(sub_form, :team_matches, i) %>
      <% end %>
        </div>
      </fieldset>                    
    </div>  
  <% end %>
<% end %>  

the view references link_to_add_matches_fields which is in application_helper

def link_to_add_matches_fields(f, association, index)
  new_object = f.object.send(association).klass.new
  id = new_object.object_id
  game = Game.find(index + 1)
  fields = f.fields_for(association, new_object, child_index: id) do |builder|
    render("tournaments/form_partials/" + association.to_s.singularize + "_fields", f: builder, game: game)
  end
  link_to('#', :class => "add-matches-button", data: {id: id, fields: fields.gsub("\n", "")}) do
    '<span class="sign pos">+</span><div>ADD Match</div>'.html_safe
  end
end  

Everything works through here and passes to either _team_matches or _player_matches correctly. But in _team_matches -

<fieldset>
  <%= f.hidden_field :_destroy %>
  <legend>Match<span class="remove">Remove</span></legend>
  <table> 
    <tr> 
      <td> HOME TEAM
##this line##  <%= f.collection_select(:home_team_id, TeamDivision.where("game_id = ?", game.id), :id, :name, {include_blank: true}) %>
      </td>
      ...

The marked line is throwing the error - If i take out collection_select and put in another variable, or just text, things are rendering fine. If change the TeamDivision.where part, it throws the same error. Based on the full trace (below), it has something to do with client-side-validations, but not sure what could be preventing the form from even being shown...?

TypeError - no implicit conversion of Fixnum into String:
  client_side_validations (3.2.5) lib/client_side_validations/action_view/form_builder.rb:98:in `build_validation_options'
  client_side_validations (3.2.5) lib/client_side_validations/action_view/form_builder.rb:75:in `collection_select_with_client_side_validations'
  app/views/tournaments/form_partials/_team_match_fields.html.erb:7:in `_app_views_tournaments_form_partials__team_match_fields_html_erb___1390226928296495378_2640008440'
  actionpack (3.2.13) lib/action_view/template.rb:145:in `block in render'
  activesupport (3.2.13) lib/active_support/notifications.rb:125:in `instrument'
  actionpack (3.2.13) lib/action_view/template.rb:143:in `render'
  rack-mini-profiler (0.1.26) Ruby/lib/mini_profiler/profiling_methods.rb:90:in `block in profile_method'
  actionpack (3.2.13) lib/action_view/renderer/partial_renderer.rb:265:in `render_partial'
  actionpack (3.2.13) lib/action_view/renderer/partial_renderer.rb:238:in `block in render'
  actionpack (3.2.13) lib/action_view/renderer/abstract_renderer.rb:38:in `block in instrument'
  activesupport (3.2.13) lib/active_support/notifications.rb:123:in `block in instrument'
  activesupport (3.2.13) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
  activesupport (3.2.13) lib/active_support/notifications.rb:123:in `instrument'
  actionpack (3.2.13) lib/action_view/renderer/abstract_renderer.rb:38:in `instrument'
  actionpack (3.2.13) lib/action_view/renderer/partial_renderer.rb:237:in `render'
  actionpack (3.2.13) lib/action_view/renderer/renderer.rb:41:in `render_partial'
  actionpack (3.2.13) lib/action_view/helpers/rendering_helper.rb:27:in `render'
  app/helpers/application_helper.rb:35:in `block in link_to_add_matches_fields'
  actionpack (3.2.13) lib/action_view/helpers/capture_helper.rb:40:in `block in capture'
  actionpack (3.2.13) lib/action_view/helpers/capture_helper.rb:187:in `with_output_buffer'
  actionpack (3.2.13) lib/action_view/helpers/capture_helper.rb:40:in `capture'
  actionpack (3.2.13) lib/action_view/helpers/form_helper.rb:605:in `fields_for'
  client_side_validations (3.2.5) lib/client_side_validations/action_view/form_helper.rb:54:in `fields_for'
  actionpack (3.2.13) lib/action_view/helpers/form_helper.rb:1467:in `fields_for_nested_model'
  actionpack (3.2.13) lib/action_view/helpers/form_helper.rb:1453:in `block in fields_for_with_nested_attributes'
  actionpack (3.2.13) lib/action_view/helpers/form_helper.rb:1452:in `fields_for_with_nested_attributes'
  actionpack (3.2.13) lib/action_view/helpers/form_helper.rb:1302:in `fields_for'
  client_side_validations (3.2.5) lib/client_side_validations/action_view/form_builder.rb:53:in `fields_for_with_client_side_validations'
  app/helpers/application_helper.rb:34:in `link_to_add_matches_fields'
  app/views/tournaments/form_partials/_form.html.erb:172:in `block (3 levels) in _app_views_tournaments_form_partials__form_html_erb__2167663622248243032_2516373920'
  actionpack (3.2.13) lib/action_view/helpers/capture_helper.rb:40:in `block in capture'
  actionpack (3.2.13) lib/action_view/helpers/capture_helper.rb:187:in `with_output_buffer'
  actionpack (3.2.13) lib/action_view/helpers/capture_helper.rb:40:in `capture'
  actionpack (3.2.13) lib/action_view/helpers/form_helper.rb:605:in `fields_for'
  client_side_validations (3.2.5) lib/client_side_validations/action_view/form_helper.rb:54:in `fields_for'
  actionpack (3.2.13) lib/action_view/helpers/form_helper.rb:1467:in `fields_for_nested_model'
  actionpack (3.2.13) lib/action_view/helpers/form_helper.rb:1453:in `block in fields_for_with_nested_attributes'
  actionpack (3.2.13) lib/action_view/helpers/form_helper.rb:1452:in `fields_for_with_nested_attributes'
  actionpack (3.2.13) lib/action_view/helpers/form_helper.rb:1302:in `fields_for'
  client_side_validations (3.2.5) lib/client_side_validations/action_view/form_builder.rb:53:in `fields_for_with_client_side_validations'
  app/views/tournaments/form_partials/_form.html.erb:163:in `block (2 levels) in _app_views_tournaments_form_partials__form_html_erb__2167663622248243032_2516373920'
  activerecord (3.2.13) lib/active_record/associations/collection_proxy.rb:89:in `method_missing'
  app/views/tournaments/form_partials/_form.html.erb:162:in `block in _app_views_tournaments_form_partials__form_html_erb__2167663622248243032_2516373920'
  actionpack (3.2.13) lib/action_view/helpers/capture_helper.rb:40:in `block in capture'
  actionpack (3.2.13) lib/action_view/helpers/capture_helper.rb:187:in `with_output_buffer'
  actionpack (3.2.13) lib/action_view/helpers/capture_helper.rb:40:in `capture'
  actionpack (3.2.13) lib/action_view/helpers/form_helper.rb:378:in `form_for'
  client_side_validations (3.2.5) lib/client_side_validations/action_view/form_helper.rb:25:in `form_for'
  app/views/tournaments/form_partials/_form.html.erb:1:in `_app_views_tournaments_form_partials__form_html_erb__2167663622248243032_2516373920'
  actionpack (3.2.13) lib/action_view/template.rb:145:in `block in render'
  activesupport (3.2.13) lib/active_support/notifications.rb:125:in `instrument'
  actionpack (3.2.13) lib/action_view/template.rb:143:in `render'
  rack-mini-profiler (0.1.26) Ruby/lib/mini_profiler/profiling_methods.rb:90:in `block in profile_method'
  actionpack (3.2.13) lib/action_view/renderer/partial_renderer.rb:265:in `render_partial'
  actionpack (3.2.13) lib/action_view/renderer/partial_renderer.rb:238:in `block in render'
  actionpack (3.2.13) lib/action_view/renderer/abstract_renderer.rb:38:in `block in instrument'
  activesupport (3.2.13) lib/active_support/notifications.rb:123:in `block in instrument'
  activesupport (3.2.13) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
  activesupport (3.2.13) lib/active_support/notifications.rb:123:in `instrument'
  actionpack (3.2.13) lib/action_view/renderer/abstract_renderer.rb:38:in `instrument'
  actionpack (3.2.13) lib/action_view/renderer/partial_renderer.rb:237:in `render'
  actionpack (3.2.13) lib/action_view/renderer/renderer.rb:41:in `render_partial'
  actionpack (3.2.13) lib/action_view/helpers/rendering_helper.rb:27:in `render'
  app/views/tournaments/new.html.erb:7:in `_app_views_tournaments_new_html_erb___2830740236402949620_2540177140'
  actionpack (3.2.13) lib/action_view/template.rb:145:in `block in render'
  activesupport (3.2.13) lib/active_support/notifications.rb:125:in `instrument'
  actionpack (3.2.13) lib/action_view/template.rb:143:in `render'
  rack-mini-profiler (0.1.26) Ruby/lib/mini_profiler/profiling_methods.rb:90:in `block in profile_method'
  actionpack (3.2.13) lib/action_view/renderer/template_renderer.rb:47:in `block (2 levels) in render_template'
  actionpack (3.2.13) lib/action_view/renderer/abstract_renderer.rb:38:in `block in instrument'
  activesupport (3.2.13) lib/active_support/notifications.rb:123:in `block in instrument'
  activesupport (3.2.13) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
  activesupport (3.2.13) lib/active_support/notifications.rb:123:in `instrument'
  actionpack (3.2.13) lib/action_view/renderer/abstract_renderer.rb:38:in `instrument'
  actionpack (3.2.13) lib/action_view/renderer/template_renderer.rb:46:in `block in render_template'
  actionpack (3.2.13) lib/action_view/renderer/template_renderer.rb:54:in `render_with_layout'
  actionpack (3.2.13) lib/action_view/renderer/template_renderer.rb:45:in `render_template'
  actionpack (3.2.13) lib/action_view/renderer/template_renderer.rb:18:in `render'
  actionpack (3.2.13) lib/action_view/renderer/renderer.rb:36:in `render_template'
  actionpack (3.2.13) lib/action_view/renderer/renderer.rb:17:in `render'
  actionpack (3.2.13) lib/abstract_controller/rendering.rb:110:in `_render_template'
  actionpack (3.2.13) lib/action_controller/metal/streaming.rb:225:in `_render_template'
  actionpack (3.2.13) lib/abstract_controller/rendering.rb:103:in `render_to_body'
  actionpack (3.2.13) lib/action_controller/metal/renderers.rb:28:in `render_to_body'
  actionpack (3.2.13) lib/action_controller/metal/compatibility.rb:50:in `render_to_body'
  actionpack (3.2.13) lib/abstract_controller/rendering.rb:88:in `render'
  actionpack (3.2.13) lib/action_controller/metal/rendering.rb:16:in `render'
  actionpack (3.2.13) lib/action_controller/metal/instrumentation.rb:40:in `block (2 levels) in render'
  activesupport (3.2.13) lib/active_support/core_ext/benchmark.rb:5:in `block in ms'
  /Users/*/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/benchmark.rb:296:in `realtime'
  activesupport (3.2.13) lib/active_support/core_ext/benchmark.rb:5:in `ms'
  actionpack (3.2.13) lib/action_controller/metal/instrumentation.rb:40:in `block in render'
  actionpack (3.2.13) lib/action_controller/metal/instrumentation.rb:83:in `cleanup_view_runtime'
  activerecord (3.2.13) lib/active_record/railties/controller_runtime.rb:24:in `cleanup_view_runtime'
  actionpack (3.2.13) lib/action_controller/metal/instrumentation.rb:39:in `render'
  actionpack (3.2.13) lib/action_controller/metal/implicit_render.rb:10:in `default_render'
  actionpack (3.2.13) lib/action_controller/metal/implicit_render.rb:5:in `send_action'
  actionpack (3.2.13) lib/abstract_controller/base.rb:167:in `process_action'
  actionpack (3.2.13) lib/action_controller/metal/rendering.rb:10:in `process_action'
  actionpack (3.2.13) lib/abstract_controller/callbacks.rb:18:in `block in process_action'
  activesupport (3.2.13) lib/active_support/callbacks.rb:448:in `block in _run__4570382803702994908__process_action__2904075733109352235__callbacks'
  activesupport (3.2.13) lib/active_support/callbacks.rb:215:in `block in _conditional_callback_around_64511'
  app/controllers/application_controller.rb:19:in `set_time_zone'
  activesupport (3.2.13) lib/active_support/callbacks.rb:214:in `_conditional_callback_around_64511'
  activesupport (3.2.13) lib/active_support/callbacks.rb:414:in `_run__4570382803702994908__process_action__2904075733109352235__callbacks'
  activesupport (3.2.13) lib/active_support/callbacks.rb:405:in `__run_callback'
  activesupport (3.2.13) lib/active_support/callbacks.rb:385:in `_run_process_action_callbacks'
  activesupport (3.2.13) lib/active_support/callbacks.rb:81:in `run_callbacks'
  actionpack (3.2.13) lib/abstract_controller/callbacks.rb:17:in `process_action'
  actionpack (3.2.13) lib/action_controller/metal/rescue.rb:29:in `process_action'
  actionpack (3.2.13) lib/action_controller/metal/instrumentation.rb:30:in `block in process_action'
  activesupport (3.2.13) lib/active_support/notifications.rb:123:in `block in instrument'
  activesupport (3.2.13) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
  activesupport (3.2.13) lib/active_support/notifications.rb:123:in `instrument'
  actionpack (3.2.13) lib/action_controller/metal/instrumentation.rb:29:in `process_action'
  actionpack (3.2.13) lib/action_controller/metal/params_wrapper.rb:207:in `process_action'
  activerecord (3.2.13) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
  actionpack (3.2.13) lib/abstract_controller/base.rb:121:in `process'
  actionpack (3.2.13) lib/abstract_controller/rendering.rb:45:in `process'
  rack-mini-profiler (0.1.26) Ruby/lib/mini_profiler/profiling_methods.rb:90:in `block in profile_method'
  actionpack (3.2.13) lib/action_controller/metal.rb:203:in `dispatch'
  actionpack (3.2.13) lib/action_controller/metal/rack_delegation.rb:14:in `dispatch'
  actionpack (3.2.13) lib/action_controller/metal.rb:246:in `block in action'
  actionpack (3.2.13) lib/action_dispatch/routing/route_set.rb:73:in `dispatch'
  actionpack (3.2.13) lib/action_dispatch/routing/route_set.rb:36:in `call'
  journey (1.0.4) lib/journey/router.rb:68:in `block in call'
  journey (1.0.4) lib/journey/router.rb:56:in `call'
  actionpack (3.2.13) lib/action_dispatch/routing/route_set.rb:612:in `call'
  bullet (4.6.0) lib/bullet/rack.rb:10:in `call'
  client_side_validations (3.2.5) lib/client_side_validations/middleware.rb:21:in `call'
  actionpack (3.2.13) lib/action_dispatch/middleware/best_standards_support.rb:17:in `call'
  rack (1.4.5) lib/rack/etag.rb:23:in `call'
  rack (1.4.5) lib/rack/conditionalget.rb:25:in `call'
  actionpack (3.2.13) lib/action_dispatch/middleware/head.rb:14:in `call'
  actionpack (3.2.13) lib/action_dispatch/middleware/params_parser.rb:21:in `call'
  actionpack (3.2.13) lib/action_dispatch/middleware/flash.rb:242:in `call'
  rack (1.4.5) lib/rack/session/abstract/id.rb:210:in `context'
  rack (1.4.5) lib/rack/session/abstract/id.rb:205:in `call'
  actionpack (3.2.13) lib/action_dispatch/middleware/cookies.rb:341:in `call'
  activerecord (3.2.13) lib/active_record/query_cache.rb:64:in `call'
  activerecord (3.2.13) lib/active_record/connection_adapters/abstract/connection_pool.rb:479:in `call'
  actionpack (3.2.13) lib/action_dispatch/middleware/callbacks.rb:28:in `block in call'
  activesupport (3.2.13) lib/active_support/callbacks.rb:405:in `_run__3907649973208251614__call__26916800040981581__callbacks'
  activesupport (3.2.13) lib/active_support/callbacks.rb:405:in `__run_callback'
  activesupport (3.2.13) lib/active_support/callbacks.rb:385:in `_run_call_callbacks'
  activesupport (3.2.13) lib/active_support/callbacks.rb:81:in `run_callbacks'
  actionpack (3.2.13) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
  actionpack (3.2.13) lib/action_dispatch/middleware/reloader.rb:65:in `call'
  actionpack (3.2.13) lib/action_dispatch/middleware/remote_ip.rb:31:in `call'
  better_errors (0.9.0) lib/better_errors/middleware.rb:84:in `protected_app_call'
  better_errors (0.9.0) lib/better_errors/middleware.rb:79:in `better_errors_call'
  better_errors (0.9.0) lib/better_errors/middleware.rb:56:in `call'
  actionpack (3.2.13) lib/action_dispatch/middleware/debug_exceptions.rb:16:in `call'
  actionpack (3.2.13) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
  railties (3.2.13) lib/rails/rack/logger.rb:32:in `call_app'
  railties (3.2.13) lib/rails/rack/logger.rb:16:in `block in call'
  activesupport (3.2.13) lib/active_support/tagged_logging.rb:22:in `tagged'
  railties (3.2.13) lib/rails/rack/logger.rb:16:in `call'
  actionpack (3.2.13) lib/action_dispatch/middleware/request_id.rb:22:in `call'
  rack (1.4.5) lib/rack/methodoverride.rb:21:in `call'
  rack (1.4.5) lib/rack/runtime.rb:17:in `call'
  activesupport (3.2.13) lib/active_support/cache/strategy/local_cache.rb:72:in `call'
  rack (1.4.5) lib/rack/lock.rb:15:in `call'
  actionpack (3.2.13) lib/action_dispatch/middleware/static.rb:63:in `call'
  rack-cache (1.2) lib/rack/cache/context.rb:136:in `forward'
  rack-cache (1.2) lib/rack/cache/context.rb:245:in `fetch'
  rack-cache (1.2) lib/rack/cache/context.rb:185:in `lookup'
  rack-cache (1.2) lib/rack/cache/context.rb:66:in `call!'
  rack-cache (1.2) lib/rack/cache/context.rb:51:in `call'
  rack-mini-profiler (0.1.26) Ruby/lib/mini_profiler/profiler.rb:278:in `call'
  railties (3.2.13) lib/rails/engine.rb:479:in `call'
  railties (3.2.13) lib/rails/application.rb:223:in `call'
  rack (1.4.5) lib/rack/content_length.rb:14:in `call'
  railties (3.2.13) lib/rails/rack/log_tailer.rb:17:in `call'
  rack (1.4.5) lib/rack/handler/webrick.rb:59:in `service'
  /Users/*/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/webrick/httpserver.rb:138:in `service'
  /Users/*/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/webrick/httpserver.rb:94:in `run'
  /Users/*/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/webrick/server.rb:295:in `block in start_thread'

Answer 1

You have to update you client-side-validation gem.

See this commit: https://github.com/bcardarella/client_side_validations/commit/1602e5da3cf9535cf1254046aa8d8f1248fa5b58

The changes:

child_index = @options[:child_index] ? "(\\d+|#{Regexp.escape(@options[:child_index])})" : "\\d+"
                                                                                   ^^^^
child_index = @options[:child_index] ? "(\\d+|#{Regexp.escape(@options[:child_index].to_s)})

Run:

bundle update --source client_side_validations