Module development and code questions

Hello!

I have a node type with an associated taxonomy with a tree type hierarchy.

I am looking for a module that displays a list of the root level hierarchy of categories, then if I enter in one of those categories I get a new list of the child categories and all of the nodes (in excerpt form) of the selected category, an so forth. Also the breadcrum should refresh as appropiate.

I am searching this kind of module, but I cannot find anything. We have a lot of demand of a module of this kind, and I am surprise that it is unaviable.

I know this is probably a silly question ( like :how much does it cost to buy a car ?), but I am asking it nevertheless. Does anyone know - in ballpark estimates, how much Is should expect to be charged for developing a new module. Minimun and average, cost. Thanks

I'm getting along happily with a custom ecommerce store, and just created a giant workflow diagram for the client (I'll attach it FYI) but something is missing.

When a transaction is paid, the customer gets an email confirming all is on its way ... but the guy in the shop does not.
I simply cannot trust that the person in the office will log in to the website every day and scan the 'orders needing action'.
Is there currently no functionality for the guys in the store-room to get an email and start passing the order through their internal system ?!

I've read the docs as far as I could find, and crawled the code, but I can find no evidence of even a template for the email that's supposed to to the humans.

I think I can see where it should go - the payment modules, on confirm of payment trigger store_send_invoice_email($txnid); - as I do in my own payment API I built (based on credit_card.module)

Is this totally unimplimented? If so, I can have a go at plugging one in, if anyone has some tips on which modules I should be adding this to. I expected it to be part of store.module, but there's no 'payment completed' workflow hook I can see. It's odd that this action is up to the payment plugin.

Where do I override the access controls for the Edit tab of my custom module/node type (i.e. type = MENU_LOCAL_TASK, title = 'Edit')?

I did not put it inside my node_menu() so it is being auto-generated elsewhere. I have also played with user access values but can't seem to find the permission that only allows access by role. And the strange thing is that some roles can't see the Edit tab, but I can't control it.

(Note: I built my custom node by copying and editing an existing .module file, but now I can't remember which one I used.)

i have enabled the avatar gallery module, but when i click on ' see avatar gallery' the following error comes up -

* warning: Invalid argument supplied for foreach() in D:\local\xampp\htdocs\drupal5\modules\avatar_gallery\avatar_gallery.module on line 291.
* warning: Invalid argument supplied for foreach() in D:\local\xampp\htdocs\drupal5\modules\avatar_gallery\avatar_gallery.module on line 291.

also i cant see any pictures in the avatar gallery block.

PLS HELP

ABhishek

hi all!

i'm using the ecommerce module to develop my site which is now at http://lucid.serveftp.net/philstudies/.

i need the user to be able to see his/her own purchasing history. meaning that the user could see what they bought before. i thought i could do this using views but the purchases are not seen in the fields and filters. :( thanks. :p