Solidity is the primary language for creating smart contracts on blockchain platforms like Celo. Decentralized Autonomous Organizations (DAOs) are one of the significant applications of these smart contracts, allowing a community to govern resources or make decisions collectively. This challenge involves building a simple DAO using Solidity.
Design a smart contract that simulates a basic DAO with the following requirements:
- The contract should allow users to submit proposals.
- The contract should enable DAO members to vote on proposals. A member’s voting power should be proportional to the amount of DAO tokens they hold.
- The contract should enforce a deadline for voting on each proposal.
- After the deadline, the contract should automatically execute the proposal with the most votes.
- The contract should prevent the same address from voting multiple times on the same proposal.
- Use a
structto define a proposal with attributes such as proposal ID, content, vote count, and deadline.
- Use a
mappingto link proposal IDs with their respective proposal data and to keep track of votes.
msg.senderto identify the address that is interacting with the contract.
- Implement checks in the voting function to prevent multiple votes and ensure only valid DAO token holders can vote.
- Correctness: The contract should compile without errors and fulfill all the requirements.
- Readability: The contract should be well-documented, with comments explaining the code.
- Testability: You should also provide examples of how to test each function of the contract.
Please note, this challenge is a simplified version of a DAO and doesn’t cover aspects like security, efficiency, and upgradability, which are critical in a real-world DAO contract.
For a comprehensive understanding of Celo smart contracts and Solidity, please refer to the Celo and Solidity tutorials.
Please reply with a link to your PR on GitHub - celo-academy/Develop-a-Simple-DAO-in-Solidity-Coding-Challenge, including your DAO contract. Also, include any notes or comments you think are necessary to understand your design and choices. Lastly, provide a brief explanation about how each function of the contract should be tested.