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POProblems passing special chars with observe_field
 

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    <p>I am working on a rails project. Using the tag observe_field, I am taking text typed into a text area, processing it in a control, and displaying the result in a div (very similar to the preview in stack overflow). Everything works fine until I type certain special chars.</p> <ol> <li>? => causes the variable not to be found in the params object</li> <li>(pound) => causes an invalid authenticity error</li> <li>% => stops the div from being updated</li> <li>&amp; => every thing after the &amp; is no longer passed into the variable on the server. </li> </ol> <p>Is there a way to solve this?</p> <p>--- code sample ---</p> <p>this is the view. ( 'postbody' is a text area)</p> <pre><code>&lt;%= observe_field 'postbody', :update =&gt; 'preview', :url =&gt; {:controller =&gt; 'blog', :action =&gt; 'textile_to_html'}, :frequency =&gt; 0.5, :with =&gt; 'postbody' -%&gt; </code></pre> <p>this is the controller that is called</p> <pre><code>def textile_to_html text = params['postbody'] if text == nil then @textile_to_html = '&lt;br/&gt;never set' else r = RedCloth.new text @textile_to_html = r.to_html end render :layout =&gt; false end </code></pre> <p>and this is the javascript that is created:</p> <pre><code>new Form.Element.Observer('postbody', 0.5, function(element, value) {new Ajax.Updater('preview', '/blog/textile_to_html', {asynchronous:true, evalScripts:true, parameters:'postbody=' + value + '&amp;authenticity_token=' + encodeURIComponent('22f7ee12eac9efd418caa0fe76ae9e862025ef97')})}) </code></pre>
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