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Project Name: Anonymous Feedback dApp

A full-stack decentralized application (dApp) built on the Stellar blockchain. Users can utilize this dApp to register anonymous feedback. The smart contract includes logic to automatically assign unique IDs to each newly created feedback, and these registered feedback entries can be accessed using their respective feedback IDs.

Table of content:

  • Technologies Used
  • Smart-contract Info
  • ⚠️ Issue
  • Project Setup Guide

Technologies Used:

  • Smartcontract : Rust, Soroban-SDK
  • Wallet : Freighter (available as a chrome-extension)
  • Frontend : ReactJS, TailwindCSS
  • Integeration : Stellar-SDK

Smart-contract Info:

  • All the materials related to the smart contract can be found in the anonymous-feedback-smartcontract folder:

  • The path to the smart contract is: ./anonymous-feedback-smartcontract/contracts/hello_world/src/lib.rs

Deployed smartcontract address: CDAN4KQKD633XF6MCOHI7Q3DJQX4E7ENCGKUBHGQKIKJWI6DVDPX54XW

Functions written inside the Anonymous Feedback Smartcontract:

  1. send_feedback(env: Env, feedback_msg: String) -> u64 : Takes a feedback message (of type String) as an argument, assigns a unique ID to each feedback, stores the feedback on the blockchain, and returns the feedback ID for the newly created entry.

  2. fetch_feedback(env: Env, fb_id: u64) -> Feedback : Takes a feedback ID (of type u64) as an argument and returns the feedback associated with the specified ID.

⚠️ Issue:

Title:

Getting undefined When Fetching Data from the Blockchain Using Stellar-SDK

Note:

Both setter (send_feedback()) and getter (fetch_feedback()) functions work as expected when invoked from the terminal using Stellar-CLI.

Issue Description:

The getter smart contract function (fetch_feedback()) returns undefined when invoked using the JavaScript interaction function (fetchFeedback()) built with Stellar-SDK (located in the Soroban.js file). This issue persists despite the function being correctly invoked.

Additionally, while I am able to store data on the blockchain using the setter smart contract function (send_feedback()) through the sendFeedback() interaction function, this function also returns undefined instead of the expected object.

The transaction builder function and all interaction functions are implemented in the Soroban.js file.

  • Path to Soroban.js file: src/components/Soroban.js

NOTE:

I have followed the Stellar documentation mentioned below to create the transaction builder function: https://developers.stellar.org/docs/build/guides/transactions/invoke-contract-tx-sdk

Screenshots of Issue (You can reproduce the issue by following the screenshots):

  1. Creating a Feedback and Storing it onchain by invoking the send_feedback() smartcontract function: image

    Result:

    • Expected output: 4
    • Output got: Undefined image

  2. Fetching a feedback with feedback-id 4 by invoking the fetch_feedback() smartcontract function: image

    Result:

    • Expected output: Feedback Number 4
    • Output got: Undefined image

Project Setup Guide:

  1. Install NodeJS, Rust, Stellar-CLI
  2. Install Freighter Wallet chrome extension.
  3. Clone the repository : git clone https://github.com/bhupendra-chouhan/Anonymous-Feedback-Soroban.git
  4. Install Dependencies: npm install
  5. Start the project: npm run start