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POConditionally calling 'collection_select' from a model/helper with AJAX
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  1. POConditionally calling 'collection_select' from a model/helper with AJAX
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    copied!<p>I'm looping through each instance of a built <code>sub-tournament</code> - and the problem that I'm having has to do with conditionally creating a <code>collection_select</code> box with data fetched via ajax. Here's the view - the line I want to insert code in is marked:</p> <p><strong>View</strong></p> <pre><code>&lt;% @tournament.sub_tournaments.each_with_index do |sub, i| %&gt; &lt;%= f.fields_for :sub_tournaments, sub, :validate =&gt; false do |sub_form| %&gt; &lt;div class="tab-content standings-row-&lt;%= i %&gt;" style="display:none"&gt; &lt;table&gt; &lt;thead&gt; &lt;tr&gt; &lt;th&gt; &lt;h4&gt;Standing&lt;/h4&gt; &lt;/th&gt; &lt;th class="standings-field-&lt;%= i %&gt;"&gt;&lt;/th&gt; &lt;th&gt;&lt;/th&gt; &lt;/tr&gt; &lt;/thead&gt; &lt;tbody&gt; &lt;%= sub_form.fields_for :standings, :validate =&gt; false do |standings| %&gt; &lt;tr&gt; &lt;td&gt; &lt;%= f.hidden_field :_destroy %&gt;&lt;%= f.text_field :standing, :class =&gt; "standing", readonly: true, :type =&gt; "" %&gt; &lt;/td&gt; &lt;td class="standings-ajax-&lt;%= i %&gt;"&gt;**INSERT HERE**&lt;/td&gt; &lt;td&gt;&lt;span class="remove"&gt;Remove&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;% end %&gt; &lt;/tbody&gt; &lt;/table&gt; &lt;div class="add-item"&gt; &lt;%= link_to_add_standings_fields(sub_form, :standings) %&gt; &lt;/div&gt; &lt;/div&gt; &lt;% end %&gt; &lt;% end %&gt; </code></pre> <p>I thought about doing the conditional check (it depends upon whether the game selected is a team game or a single-player game) in the controller, but it seems to make more sense as a method (or a helper?). At the moment I have it in <code>Standing.rb</code> (below) - but I'm getting a <code>no method "collection_select"</code> error - so probably form helpers aren't available in models, which seems reasonable. So how could I do this? </p> <p><strong>Standing.rb</strong></p> <pre><code>def team_or_player(game) if Game::TEAM_GAMES.include?(game.name) self.collection_select(:team_division_id, TeamDivision.where("game_id = ?", game.id), :id, :name, {include_blank: true}) else self.collection_select(:player_id, Player.where("game_id = ?", game.id), :id, :handle, {include_blank: true}) end end </code></pre> <p>And how can I pass the <code>f</code> to my AJAX call? </p> <p><strong>AJAX</strong></p> <pre><code>$(".standings-ajax-&lt;%= @tab_number %&gt;").html("&lt;%= ** ?? **.team_or_player(@standing, @game) %&gt;"); </code></pre>
 

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