Rails - Dec 2007 - How to remember if a div is shown or hidden after a page ref

Hi everyone, hi have a similar problem in a view:


<div id="content">...</div>

<a href="javascript:void(0)"
onClick="Effect.Toggle(''content'');">Hide/show
content</a>


I would like the page to "remember" that the div has been hidden after
a
page reload.
(The div comes up always visible even if it was set to hidden before).

Any simple way to do this?
Thanks a lot in advance
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Ax Plains wrote:
> Hi everyone, hi have a similar problem in a view:
> 
> 
> <div id="content">...</div>
> 
> <a href="javascript:void(0)"
>
onClick="Effect.Toggle(''content'');">Hide/show
content</a>
> 
> 
> I would like the page to "remember" that the div has been hidden
after a
> page reload.
> (The div comes up always visible even if it was set to hidden before).
> 
> Any simple way to do this?
> Thanks a lot in advance
If you are reloading the page in the controller, then you can use an 
instance variable in the controller to decide whether the div should be 
hidden or not.Like,

In controller :
@show_div_tag = true

In view :
<% default_style = @show_div_tag ? "" : "display:none"
%>

<div id="content" style="<%= default_style
%>">...</div>

You can also optimize this code.

In case if you are manually reloading the browser, the above is 
applicable.


Regards,
- Karthi


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Karthi kn wrote:
> Ax Plains wrote:
>> Hi everyone, hi have a similar problem in a view:
>> 
>> 
>> <div id="content">...</div>
>> 
>> <a href="javascript:void(0)"
>>
onClick="Effect.Toggle(''content'');">Hide/show
content</a>
>> 
>> 
>> I would like the page to "remember" that the div has been
hidden after a
>> page reload.
>> (The div comes up always visible even if it was set to hidden before).
>> 
>> Any simple way to do this?
>> Thanks a lot in advance
> 
> If you are reloading the page in the controller, then you can use an 
> instance variable in the controller to decide whether the div should be 
> hidden or not.Like,
> 
> In controller :
> @show_div_tag = true
> 
> In view :
> <% default_style = @show_div_tag ? "" :
"display:none" %>
> 
> <div id="content" style="<%= default_style
%>">...</div>
> 
> You can also optimize this code.
> 
> In case if you are manually reloading the browser, the above is 
> applicable.
> 
> 
> Regards,
> - Karthi
Thanks a lot.

Anyway, I would like to let the user decide to let the div visible or 
not.
I think the "show_div_tag" variable should be set when the user clicks
on the link, and remembered between page refreshes (maybe in a session)?
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Ax Plains wrote:
> 
> Thanks a lot.
> 
> Anyway, I would like to let the user decide to let the div visible or 
> not.
> I think the "show_div_tag" variable should be set when the user
clicks
> on the link, and remembered between page refreshes (maybe in a session)?
Yes. You can use the session also. if you are not using the session, you
have to pass the current value of the variable to the controller for
each call(by manually passing the value or by submitting in the form as
a hidden value).
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Karthi kn wrote:
> Ax Plains wrote:
> 
>> 
>> Thanks a lot.
>> 
>> Anyway, I would like to let the user decide to let the div visible or 
>> not.
>> I think the "show_div_tag" variable should be set when the
user clicks
>> on the link, and remembered between page refreshes (maybe in a
session)?
> 
> Yes. You can use the session also. if you are not using the session, you
> have to pass the current value of the variable to the controller for
> each call(by manually passing the value or by submitting in the form as
> a hidden value).
Many thanks.
In the end, I ended up using a cookie...
works fine and does not confuse Ruby coding.

Thanks a lot anyway.
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