observe_field method for fields in RoR


	observe_field method for fields in RoR

dchinyee

7-28-2008 11:55 AM

127 views

tags:

ruby-on-rails code

dchinyee says:

use this to monitor the value of a field to perform auto-filter, live search, etc.

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/edb0c355-52f0-4d94-b47f-898bf2885972/FFC71478-C9C7-42D8-849F-9504398655E8/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://www.onlamp.com/pub/a/onlamp/2005/06/09/rails_ajax.html?page=2" href="http://www.onlamp.com/pub/a/onlamp/2005/06/09/rails_ajax.html?page=2" style="font-size: 11px;">www.onlamp.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.onlamp.com/pub/a/onlamp/2005/06/09/rails_ajax.html?page=2"><PRE><CODE>&lt;label for="searchtext"&gt;Live Search:&lt;/label&gt;
&lt;%= text_field_tag :searchtext %&gt;
&lt;%= observe_field(:searchtext,
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                 :update =&gt; :search_hits,
                 :url =&gt; { :action =&gt; :live_search }) %&gt;
&lt;p&gt;Search Results:&lt;/p&gt;
&lt;div id="search_hits"&gt;&lt;/div&gt;</CODE></PRE></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/FFC71478-C9C7-42D8-849F-9504398655E8/blog/" title="blog or email this clip"><img src="http://content6.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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