Your opinion on this architecture ?

[eluser]Unknown[/eluser]
Hello everybody,

I discover CI and try to start with good practices.

I have an on-line application that send JSON requests on my CI server. There is different kind of request :
A/ getDataFromBDD
B/ getSingleLineFromBDD
C/ updateLineInBDD
D/ createNewLineInBDD

I have thought this architecture to do the job :

1/ Only one controller (then called THE_CONTROLLER) that receives JSON requests, analyses the requests, checks that the user is registered and sessioned.
2/ Others controllers that are made to handle A,B,C or D kind of request.
3/ THE_CONTROLLER validates access and asks the accurate other controller to do the job for him
4/ THE_CONTROLLER gets returned array as result
5/ THE_CONTROLLER passes the array to a view that json_encode the result
6/ THE_CONTROLLER adapts response header to be wright understood by the browser

Regarding that architecture I want to know 3 things :
--> How can I make a controller ask an other controller to do the job ?
--> Would IT be better to ask models rather than controller to do the job (even if calculation is complex and not only a resource solicitations) ? Keep in mind that I am not an MVC pro.
--> What do you think about this architecture ?

Thanks for your help

PS : I profit of this post to send my felicitation for that powerful framework !
PS2 : Sorry for bad ways to say things, I am not a native English speaker.

K.

[eluser]n0xie[/eluser]
What you are looking for is probably Presentation-abstraction-control also called Hierarchical-Model-View-Controller, Wiredesignz made a very good extension on the CI framework which you can find here. Now you can have 1 entry Controller which analyses the request then dispatches it to another controller which will generate some data which you then send back as a response.