Referring to permissioned account within contract code?

Question

I've created a table within a contract where I want to store user information. the .emplace() method's first parameter specifies the "scope" (I guess) for data to be stored and thus the user account

when I create the transaction I pass in the account that has permission via -p. something like:

cleos push action MyContract MyAction "[]" -p UserAccount@active

so within my code I need a way to refer to the UserAccount. _self seems to refer to the account that owns the contract

how can that be done?

Answer 1

The .emplace() method's first parameter specifies the "payer" not the "scope" for data to be stored, the payer who pay for the RAM.

The multi_index table's defination specify the "code" and "scope".

To get the sender see this: Account of caller of action

Answer 2

I just put the UserAccount as one of the arguments of the action