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POTagging with autocomplete in Rails
 

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    <p>My (long, I apologize) question is a follow-on to: <a href="https://stackoverflow.com/questions/4937185/how-to-add-tagging-with-autocomplete-to-an-existing-model-in-rails/5008263#5008263">How to add tagging with autocomplete to an existing model in Rails?</a></p> <p>I am using <code>acts-as-taggable-on</code> and <code>rails3-jquery-autocomplete</code>, and trying to set up a system (much like Stack Overflow) where users begin to enter in a tag and suggestions appear in a drop-down box.</p> <h2>Goal</h2> <p>I am in the <b>answers</b>#new form and I want to see a list of tags that relate to <b>questions</b>. i.e. Imagine being on SO looking for new Rails questions to answer, and searching for <code>ra</code>. <code>Ruby-on-Rails</code> pops up, you click it, and you see a list of questions under RoR, any one of which you can answer.</p> <p>These are the steps I've taken.</p> <ol> <li>Installed both gems. Both seem to work on their own.</li> <li>Added <code>&lt;%= javascript_include_tag "ui/jquery.ui.position", "ui/jquery.ui.autocomplete", "autocomplete-rails.js", "rails.js", "application.js" %&gt;</code>. (I already have Jquery, UI Core and UI Effects.)</li> <li>Answers controller: I added at top <code>autocomplete :question, :tags, :full =&gt; true</code>. I also tried <code>autocomplete :tag, :name, :full =&gt; true</code>.</li> <li>Question.rb: <code>acts_as_taggable_on :tags</code>.</li> <li>View:<br> <code>&lt;%= form_tag new_answer_url, :method =&gt; "get" do %&gt;<br> &lt;%= autocomplete_field_tag "tag_list", 'tags', autocomplete_question_tags_answers_path %&gt;<br> &lt;% end %&gt;</code></li> </ol> <p>A simple autocomplete (no tagging) works (but it only works once per page load). With tagging, no success.</p> <h2>Problems</h2> <p>With lots of experimentation (and many hours) I am getting these problems:</p> <ol> <li>I get <code>NameError (unitialized constant Tag)</code> in server response to initial entry.</li> <li>With a non-taggable implementation (searching for the simple question text itself) I get a JQuery Autocomplete-style drop-down but my cursors cannot access the options with up/down. I have to click them with the mouse. Also, the dropdown doesn't disappear unless I reload the page!</li> <li>After the server responds with results once (only non-taggable is working as I mentioned), it doesn't respond again to key presses or changes in the text entry.</li> </ol> <p>I would greatly appreciate any help you are able to give. I have gone through a few tutorials step-by-step but no luck today.</p>
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    1. COI too am very curious to find how to best work this problem out.
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