Employee Polls Project

In the final exercise of Udacity’s React Nanodegree, students build an interactive voting portal. Users can log in, post new polls, and vote on existing ones. The intuitive interface allows easy navigation between polls.

Run the project

To run the project, you can follow these steps:

1. Clone or download the project to local repoitory
2. Make sure you node.js environment has been installed
3. Open terminal at the root of repository
4. Run command: npm install in order to install all the project's dependencies
5. Run command: npm start to start project. Press F5 in VSCode to start the debug session
6. Run command: npm test to start the Unit Test process

Setup project

Clone the starter code project

Clone this Starter code. Basically, this code is initialized by the Create React App to bootstrap the project

Command

npx create-react-app employee-polls
cd employee-polls
npm i @reduxjs/toolkit react-router-dom react-hook-form react-redux react-redux-loading-bar yup @hookform/resolvers

Install NextUI

npm i @nextui-org/react framer-motion
npm i -D tailwindcss
npx tailwindcss init

ESLint

npm i -g eslint

Jest

npm i --save-dev jest

Other package

npm i @react-stately/data

Data

The _DATA.js file represents a fake database and methods that let you access the data.

There are two types of objects stored in our database:

• Users
• Questions

Users

Users include:

Attribute	Type	Description
id	String	The user’s unique identifier
password	String	The user’s password in order to log in the application
name	String	The user’s first name and last name
avatarURL	String	The path to the image file
questions	Array	A list of ids of the polling questions this user created
answers	Object	The object's keys are the ids of each question this user answered. The value of each key is the answer the user selected. It can be either 'optionOne' or 'optionTwo' since each question has two options.

Questions

Questions include:

Attribute	Type	Description
id	String	The question’s unique identifier
author	String	The author’s unique identifier
timestamp	String	The time when the question was created
optionOne	Object	The first voting option
optionTwo	Object	The second voting option

Voting Options

Voting options are attached to questions. They include:

Attribute	Type	Description
votes	Array	A list that contains the id of each user who voted for that option
text	String	The text of the option

Your code will talk to the database via 4 methods:

• _getUsers()
• _getQuestions()
• _saveQuestion(question)
• _saveQuestionAnswer(object)

1. _getUsers() Method

Description: Get all of the existing users from the database.
Return Value: Object where the key is the user’s id and the value is the user object.

2. _getQuestions() Method

Description: Get all of the existing questions from the database.
Return Value: Object where the key is the question’s id and the value is the question object.

3. _saveQuestion(question) Method

Description: Save the polling question in the database. If one of the parameters are missing, an error is thrown. Parameters: Object that includes the following properties: author, optionOneText, and optionTwoText. More details about these properties:

Attribute	Type	Description
author	String	The id of the user who posted the question
optionOneText	String	The text of the first option
optionTwoText	String	The text of the second option

Return Value: An object that has the following properties: id, author, optionOne, optionTwo, timestamp. More details about these properties:

Attribute	Type	Description
id	String	The id of the question that was posted
author	String	The id of the user who posted the question
optionOne	Object	The object has a text property and a votes property, which stores an array of the ids of the users who voted for that option
optionTwo	Object	The object has a text property and a votes property, which stores an array of the ids of the users who voted for that option
timestamp	String	The time when the question was created

4. _saveQuestionAnswer(object) Method

Description: Save the answer to a particular polling question in the database. If one of the parameters are missing, an error is thrown. Parameters: Object that contains the following properties: authedUser, qid, and answer. More details about these properties:

Attribute	Type	Description
authedUser	String	The id of the user who answered the question
qid	String	The id of the question that was answered
answer	String	The option the user selected. The value should be either "optionOne" or "optionTwo"

Screenshots

Login Page

Alert

Home

Add

Add result

Tooltip

Detail voted

detail unvoted

After voted

Leaderboard

Logout

404

Test result