Hello!
I want to understand more about how flash[:notice] works, because in one
case it stays on longer than I would want or expect..
I set it in on of the actions, and in the view for that action there is
a link to somewhere else.. When the user clicks on that link, the flash
message is displayed in the new action/view.. how come? If I do
flash.now[:notice] = ''''.. then it works as expected.. my
questions: is
it normal that in first case the message stays.. and why? what is the
exact difference between flash and flash.now... is this subject easy to
understand and consistent or is it a little bit "hackish" and blurry?
The details:
def forgotten_password
# if post, generate password reset link and store it in the user
table, otherwise just show the form
if request.post?
user = User.find_by_email(params[:email])
if !user
flash[:notice] = "There is no user with such email"
else
Notifier::deliver_password_reset_key(user)
# show the message about the sent email
render :action => ''password_reset_sent''
end
end
end
This is the view for this action:
<%= start_form_tag :action => ''forgotten_password'' %>
Plase enter your email:
<%= text_field_tag(:email, '''' ) %>
<%= submit_tag ''OK'' %>
<%= end_form_tag %>
<br/>
<%= link_to "Home", :action => ''login'' %>
So when I enter the non-existing email, the above flash message is set
and this view(form) displayed again.. BUT when I click on HOME (link on
the bottom), the message is still there in the ''login''
action..
as I said - the message goes away if I use flash.now() .. but I would
really like to understand the philosophy of this.. I don''t want to go
testing the code for that kind of stuff and not learning it the right
way..
THANK YOU A LOT for the clarification!
David
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augustlilleaas-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
2007-Jan-21 03:57 UTC
Re: flash[:notice]
A flash is essensial a session variable that is around in the request after it was set. On the request after that again, it''s gone. Not sure about your problem, though. On Jan 21, 2:24 am, David Krmpotic <rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org> wrote:> Hello! > > I want to understand more about how flash[:notice] works, because in one > case it stays on longer than I would want or expect.. > > I set it in on of the actions, and in the view for that action there is > a link to somewhere else.. When the user clicks on that link, the flash > message is displayed in the new action/view.. how come? If I do > flash.now[:notice] = ''''.. then it works as expected.. my questions: is > it normal that in first case the message stays.. and why? what is the > exact difference between flash and flash.now... is this subject easy to > understand and consistent or is it a little bit "hackish" and blurry? > > The details: > > def forgotten_password > # if post, generate password reset link and store it in the user > table, otherwise just show the form > if request.post? > user = User.find_by_email(params[:email]) > if !user > flash[:notice] = "There is no user with such email" > else > Notifier::deliver_password_reset_key(user) > # show the message about the sent email > render :action => ''password_reset_sent'' > end > end > end > > This is the view for this action: > > <%= start_form_tag :action => ''forgotten_password'' %> > Plase enter your email: > > <%= text_field_tag(:email, '''' ) %> > > <%= submit_tag ''OK'' %> > <%= end_form_tag %> > > <br/> > > <%= link_to "Home", :action => ''login'' %> > > So when I enter the non-existing email, the above flash message is set > and this view(form) displayed again.. BUT when I click on HOME (link on > the bottom), the message is still there in the ''login'' action.. > > as I said - the message goes away if I use flash.now() .. but I would > really like to understand the philosophy of this.. I don''t want to go > testing the code for that kind of stuff and not learning it the right > way.. > > THANK YOU A LOT for the clarification! > > David > > -- > Posted viahttp://www.ruby-forum.com/.--~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
You could use flash.now[:notice], that way it will only show once. Kind regards, Nick -- http://www.railshostinginfo.com Compare Rails hosting companies --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
thank you, but this doesn''t tell me anything ;) I know that.. and it does work.. but I wanted to know why the normal flash doesn''t.. I also wanted to know the difference between the two (how it works).. thank you anyway ... but can anyone provide the *real* explanation? Thank you! enjoy! david Nick Snels wrote:> You could use flash.now[:notice], that way it will only show once. > > Kind regards, > > Nick > -- > http://www.railshostinginfo.com > Compare Rails hosting companies-- 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 post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
You have pretty much answered it yourself. From http://www.rubyonrails.org/api/classes/ActionController/Flash.html The flash provides a way to pass temporary objects between actions. Anything you place in the flash will be exposed to the very next action and then cleared out. This is a great way of doing notices and alerts, such as a create action that sets flash[:notice] = "Successfully created" before redirecting to a display action that can then expose the flash to its template. Actually, that exposure is automatically done. and for Flash.now http://www.rubyonrails.org/api/classes/ActionController/Flash/FlashHash.html now() Sets a flash that will not be available to the next action, only to the current. -- 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 post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
OK, I got it now... The thing that was confusing me was that somehow I thought that regular flash is cleared after rendering a view (of course it''s not), when in fact it''s the next action that is the final stop... great! Thank you all! David Rob Schultz wrote:> You have pretty much answered it yourself. > From > http://www.rubyonrails.org/api/classes/ActionController/Flash.html > > The flash provides a way to pass temporary objects between actions. > Anything you place in the flash will be exposed to the very next action > and then cleared out. This is a great way of doing notices and alerts, > such as a create action that sets flash[:notice] = "Successfully > created" before redirecting to a display action that can then expose the > flash to its template. Actually, that exposure is automatically done. > > and for Flash.now > http://www.rubyonrails.org/api/classes/ActionController/Flash/FlashHash.html > > now() > Sets a flash that will not be available to the next action, only to the > current.-- 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 post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---