Ruby on Rails

On Apr 25, 2013, at 4:41 PM, Brentwood R. wrote:

> ...all instances of "something" will be highlighted in the 'div'. What
> I'm trying to do is make it so that a user can enter a keyword (through
> an input field) so that whatever keyword they entered would be
> highlighted on the page.

OK. This has nothing at all to do with ruby or rails. What you want is a javascript event handler on the input field which then calls that highlight function. You'd call something like:

$('div').highlight($('#my_input_field').val())

How you arrange to call that varies, you could set up the event handler directly as an option in the text_field_tag call in the .html.erb template:

<%= text_field_tag(:my_input_field, '', {onchange: 'call_the_highlight_fun()'}) %>

You could skip the embedded ruby altogether since you're not really using rails in that little piece and just put in <form> and <input> tags.

Or you could use "unobtrusive javascript", which I prefer: leave the input field alone, and in a document loaded handler, add the event handler to the input field:

$(function() {$('#my_input_field').change(function() {call_the_highlight_fun()})})

Note that:

- I'm whipping this off the top of my head, not all syntax may be correct, but you seem to be looking for help with the general approach.

- I'm assuming jquery.

- I'm assuming recent rails and ruby 1.9 (thus the {symbol: value} syntax for a hash).

--
Scott Ribe
scott_ribe@elevated-dev.com
http://www.elevated-dev.com/
(303) 722-0567 voice




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