At present, every action must render or redirect exactly once.
I have an single-page application that displays many panes (currently 8) of
related data,
and when any action is performed in any pane, an arbitrary number of related
panes may
need to be refreshed. Each refresh requires that the data be fetched, and an RJS
replace_html or whatever is performed to update that pane.
My initial solution was to build one "refresh.rjs" with a conditional to
refresh each pane.
Then each action must, for each affected pane:
* fetch the required data
* set the conditional
What I really want is to be able to render multiple individual RJS actions,
each one adding
to the result.
What I currently have implemented is a before_filter that zeroes a @refreshes
array, and
a refresh() method that appends the passed block to @refreshes. At the end of
each action
that has called refresh(), you need to "render :action => refresh", which
iterates through
@refreshes passing "page" to each block.
That works fine, except that I'd like to avoid the call to render at the end of
an action
that's called refresh. It's not possible to do the render from an after_filter,
since that
happens after the default render that you get if you don't call either render
or redirect.
It would be possible to do the render in an alternate "default render" action,
if such a
filter were provided.
So my suggestion is that there be a facility added to
ActionController::Base#performed?
that allows a plugin to replace the default render if neither render nor
redirect has
been called (for example, if refresh has been called).
It could be a very simple lightweight change in the core that would encompass
both render
and redirect and allow addition of further rendering models, such as this one...
def default_render
@default_render_chain.each{|renderer| return if renderer.call}\
render
end
Then in perform_action:
default_render unless performed?
... and of course some way to initialize @default_render
Your thoughts, please?
Clifford Heath, Data Constellation.
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups "Ruby
on Rails: Core" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at
http://groups.google.com/group/rubyonrails-core?hl=en
-~----------~----~----~----~------~----~------~--~---
