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CFGRID - using object in memory with bind attribute?
Author: Doug Smidt
Short Link: http://www.houseoffusion.com/groups/cf-talk/thread.cfm/threadid:58465#317616
This isn't my argument - it's yours. I'm not going to get into another endless
debate on best practices.
Simply dropping my data into the query attribute doesn't solve my problem, as I
need the same thing to happen in the onChange attribute. I'm not aware of a
replacement for that, and what I have running is pretty kick-ass from a user POV.
I just don't like how my code looks.
So I'll ask again - Is there any way I can use a variable in the bind (or
onChange) attribute instead of a path to a CFC? That's all I want an answer to.
If the answer is yes, how do you do it? If it is not, a simple explanation as to
why not. But a simple yes or no will do.
----- Excess quoted text cut - see Original Post for more -----
======> =====================================================================
> Raymond Camden, VP of Software Dev, Broadchoice
>
> Email : ray@camdenfamily.com
> Blog : www.coldfusionjedi.com
> AOL IM : cfjedimaster
>
> Keep up to date with the community: http://www.coldfusionbloggers.
org
Author: Raymond Camden
Short Link: http://www.houseoffusion.com/groups/cf-talk/thread.cfm/threadid:58465#317600
> I do want to use a persisted CFC....but I want to use it on the spot, in the
CFGRID tag. I don't want to:
>
> 1) Do exactly what you stated is generally recommended against. I don't
want to be accessing a shared scope directly in a CFC. I've taught others not to
do it, and I'm not going to do it either.
But the fact is - many "Dont do X" rules have exceptions. This is one
of them. ColdSpring even provides for this out of the box (taking your
configured services and creating remote proxies for them). I don't
think your argument here is valid.
> I know what my options are, but you're not answering my question, which is
simply this. Is there any way I can use a variable in the bind attribute instead
of a path to a CFC?
You can use a query in the HTML grid. If your CFC lets you get the
query object, just get it, and do query="#...#" in your cfgrid tag.
--
===========================================================================
Raymond Camden, VP of Software Dev, Broadchoice
Email : ray@camdenfamily.com
Blog : www.coldfusionjedi.com
AOL IM : cfjedimaster
Keep up to date with the community: http://www.coldfusionbloggers.org
Author: Doug Smidt
Short Link: http://www.houseoffusion.com/groups/cf-talk/thread.cfm/threadid:58465#317571
I do want to use a persisted CFC....but I want to use it on the spot, in the
CFGRID tag. I don't want to:
1) Do exactly what you stated is generally recommended against. I don't want to
be accessing a shared scope directly in a CFC. I've taught others not to do it,
and I'm not going to do it either.
2) I already have a perfectly good CFC that does everything I need it to do, but
I can't use it because I can't instantiate it properly. It's not a static CFC.
I don't want to have to write another CFC with the sole purpose of accessing a
variable that does everything I need if I don't have to.
I know what my options are, but you're not answering my question, which is simply
this. Is there any way I can use a variable in the bind attribute instead of a
path to a CFC?
----- Excess quoted text cut - see Original Post for more -----
Author: Raymond Camden
Short Link: http://www.houseoffusion.com/groups/cf-talk/thread.cfm/threadid:58465#317568
So I'm confused - are you saying the only reason you don't want to use
a persisted CFC is.... what? Why isn't this CFC (myPeeps) cached in
the app scope? You could then make another CFC, just for AJAX
purposes, that works with this app scoped CFC. I know that - in
general - folks recommend against that, but for AJAX I think it makes
sense. The CFC is simply acting as a proxy to your cached components.
----- Excess quoted text cut - see Original Post for more -----
Author: Doug Smidt
Short Link: http://www.houseoffusion.com/groups/cf-talk/thread.cfm/threadid:58465#317567
Sorry - I should have been more clear. I'm not necessarily referring to an
object (variable) in a shared scope, though I want that to be an option. I also
don't want to have to access a variable containing my CFC directly from a shared
scope inside of another CFC.
A very basic, quick example of what I would like to be able to do. I have a CFC
called People. That CFC has a couple of queries in it; one to get people and
another to update a person. My Person CFC requires a Datasource object be passed
in via dependency injection to work. I create a variable called called
MyDatasource on a .cfm page, I create a variable called MyPeeps, then I inject
MyDatasource into MyPeeps. MyPeeps can get people from my database and update a
person in my database.
My cfgrid tag has these attributes:
bind="cfc:somepath.People.getData({cfgridpage},{cfgridpagesize},{cfgridsortcolumn},{cfgridsortdirection})"
onchange="cfc:somepath.People.editData({cfgridaction},{cfgridrow},{cfgridchanged})"
Instead of using "somepath.People", I'd like to use a variable I've created
containing my CFC (MyPeeps) instead of a path to a CFC. Similar to what you can
do with a CFINOVOKE tag.
Like I said, I don't know if this is even possible...but I figured it couldn't
hurt to ask. I don't know what goes on behind the scenes with CFGRID, so it may
just not work. I can get it done without it....but that will require me to split
up files I didn't want to split up. If I must, I must.
----- Excess quoted text cut - see Original Post for more -----
Author: Raymond Camden
Short Link: http://www.houseoffusion.com/groups/cf-talk/thread.cfm/threadid:58465#317563
Why not point to a CFC that uses the object in memory? Or am I
misreading you? There is no need for the CFC you call to rerun
cfquery. It can simply use an application (or session, whatever)
cached query and perform QofQ on it for sorting.
> I recently jumped back into CFGRID after not looking at it for a long time;
what I was able to whip up in short order seems like a very good fit for what I'm
working on.
>
> One thing I wasn't able to figure out (or even know if it's possible)...is
there a way to provide an object in memory to the bind attribute instead of a
path to a CFC? Almost all of our CFCs require other objects be tucked in using
dependency injection before they'll do their thing, which means simply providing
a path isn't an option for me unless I create a separate, non-conforming CFC to
do my work.
>
> Is this an option, am I missing something really simple, or am I chasing a
pot of gold
here?
Author: Doug Smidt
Short Link: http://www.houseoffusion.com/groups/cf-talk/thread.cfm/threadid:58465#317555
I recently jumped back into CFGRID after not looking at it for a long time; what
I was able to whip up in short order seems like a very good fit for what I'm
working on.
One thing I wasn't able to figure out (or even know if it's possible)...is there
a way to provide an object in memory to the bind attribute instead of a path to a
CFC? Almost all of our CFCs require other objects be tucked in using dependency
injection before they'll do their thing, which means simply providing a path
isn't an option for me unless I create a separate, non-conforming CFC to do my
work.
Is this an option, am I missing something really simple, or am I chasing a pot of
gold here?
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May 24, 2012
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