How can I refresh a particular div or a partial using onChange of a dropdown menu without reloading the page? -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/b3b5bf9452e5197a44f7861b9e03b50b%40ruby-forum.com?hl=en-US. For more options, visit https://groups.google.com/groups/opt_out.
The simple answer is "with JavaScript".
If you are filling that DIV with the result of a normal RESTful route, like
/widgets/2 (show) then you can do something like this:
$(''widget_id_picker_dom_id'').observe(''change'',
function(evt){
new Ajax.Updater(''div_to_update'',
''/widgets/'' + $F(this), { method: ''get });
});
That''s Prototype.js code, I am sure there is something similar in
jQuery.
If you need a separate route for this job, then you can add that in your
controller and routes.rb files, and have a more complex workflow if that is
warranted.
Walter
On Jun 10, 2013, at 6:55 AM, Praveen BK wrote:
> How can I refresh a particular div or a partial using onChange of a
> dropdown menu without reloading the page?
>
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Walter Davis wrote in post #1111896:> The simple answer is "with JavaScript". > > If you are filling that DIV with the result of a normal RESTful route, > like /widgets/2 (show) then you can do something like this: > > $(''widget_id_picker_dom_id'').observe(''change'', function(evt){ > new Ajax.Updater(''div_to_update'', ''/widgets/'' + $F(this), { method: > ''get }); > }); > > That''s Prototype.js code, I am sure there is something similar in > jQuery.The jQuery ----------------- $(function() { $(''#widget_id_picker_dom_id'').change(function() { # Non-AJAX update (no server request) $(''#div_to_update'').html("html content here..."); # AJAX update $(''#div_to_update'').load("/url/to/retrieve/div/contents", function() { # Optional completion handler called after loading the div contents }); }); }); Note: This is wrapped inside $(function() {}); which watches for the DOM ready event before binding to the control widget change event. We use Unobtrusive JavaScript these days rather than the old-style DOM event attributes. <select .... onchange="myFunction();"></select> # This is obtrusive (i.e. inline) and doesn''t belong in HTML. Separate your page structure from behavior. http://en.wikipedia.org/wiki/Unobtrusive_JavaScript -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/abe9683a46aa527f047e3c850e615e50%40ruby-forum.com. For more options, visit https://groups.google.com/groups/opt_out.
On Jun 13, 2013, at 6:03 PM, Robert Walker wrote:> Walter Davis wrote in post #1111896: >> The simple answer is "with JavaScript". >> >> If you are filling that DIV with the result of a normal RESTful route, >> like /widgets/2 (show) then you can do something like this: >> >> $(''widget_id_picker_dom_id'').observe(''change'', function(evt){ >> new Ajax.Updater(''div_to_update'', ''/widgets/'' + $F(this), { method: >> ''get }); >> }); >> >> That''s Prototype.js code, I am sure there is something similar in >> jQuery. > > The jQuery > ----------------- > > $(function() { > $(''#widget_id_picker_dom_id'').change(function() { > # Non-AJAX update (no server request) > $(''#div_to_update'').html("html content here..."); > > # AJAX update > $(''#div_to_update'').load("/url/to/retrieve/div/contents", function() > { > # Optional completion handler called after loading the div > contents > }); > }); > });Thanks for pitching in with this. Can you show the proper way in jQuery to get the current value of the picker you''re observing, as I did with $F(this) above? That''s usually the critical thing with this design pattern -- you change the picker and you get unique content based on whatever value you changed it to. Walter> > Note: This is wrapped inside $(function() {}); which watches for the DOM > ready event before binding to the control widget change event. We use > Unobtrusive JavaScript these days rather than the old-style DOM event > attributes. > > <select .... onchange="myFunction();"></select> # This is obtrusive > (i.e. inline) and doesn''t belong in HTML. Separate your page structure > from behavior. > > http://en.wikipedia.org/wiki/Unobtrusive_JavaScript > > -- > Posted via http://www.ruby-forum.com/. > > -- > You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. > To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/abe9683a46aa527f047e3c850e615e50%40ruby-forum.com. > For more options, visit https://groups.google.com/groups/opt_out. > >-- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/9036B51E-E179-4009-A89C-94A2E0A0337F%40wdstudio.com. For more options, visit https://groups.google.com/groups/opt_out.
Walter Davis wrote in post #1112372:> On Jun 13, 2013, at 6:03 PM, Robert Walker wrote: > >>> >> >> # AJAX update >> $(''#div_to_update'').load("/url/to/retrieve/div/contents", function() >> { >> # Optional completion handler called after loading the div >> contents >> }); >> }); >> }); > > Thanks for pitching in with this. Can you show the proper way in jQuery > to get the current value of the picker you''re observing, as I did with > $F(this) above? That''s usually the critical thing with this design > pattern -- you change the picker and you get unique content based on > whatever value you changed it to. > > Walter$(''#widget_id_picker_dom_id'').val(); or $(this).val(); -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/8fa112ff20d3ce16daa5486e250ad30c%40ruby-forum.com. For more options, visit https://groups.google.com/groups/opt_out.