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https://github.com/PatrickAlphaC/dao-template/blob/main/contracts/governance_standard/GovernorContract.sol

in the contract, when a proposal is successful, someone can call the _execute function with parameters to execute the proposal. So how does the contract ensure that the execution parameters are the same as those for the proposal?

Thank you

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The _execute function you linked is not the actual execute function you would call. This is the main execute function: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/6aac66d065dc39795fbad1f680f80e3a3d70f2d1/contracts/governance/Governor.sol#L320

And if you take a look at it, you would see the proposalId is a data retrieved by hashing execute parameters (targets, values, calldatas, descriptionHash). And proposalId is used for retrieving the status of a proposal in the same function. If you send a different parameter other then the proposed one, the hashing would return a wrong proposalId and you would get "Governor: proposal not successful" which comes from the require statement from the execute function.

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