I am new to auction idea of drupal 7. My client wants an checkbox to be implemented ,where users can select whether they require any e-mail notification /sms or both or none.I want to send e-mail and sms notification to the respective logged in user on the basis of bids placed by them!
I configured the mail and sms notifcation part .Can anyone let me know how to send notifications when user checks the checkbox in drupal 7 on the basis of bid?
To add to user28867's answer which gives a useful way to send messages to users, you seem to need a way to trigger those messages.
Assuming the trigger is based on saving a node of some kind you should look at hook_node_presave which will tell you when a node is saved.
Create a custom module to receive that message and act on the hook by creating a function that implements the hook.
Of course the standard warnings apply:
I would look at the Message module
The Message module is the core of the message stack. It enables logging and displaying system events in a number of different use cases. Events that are recorded over time are sometimes call activity streams. Exportable messages subtypes can be created for different use cases with custom fields and display (view) modes.
