44 - Kanban board for managing tasks with drag-and-drop
Description
Create a Kanban board for managing tasks with drag-and-drop functionality, displaying multiple columns representing different stages of a workflow (e.g., To Do, In Progress, Done), rendering tasks as draggable cards within each column, allowing users to move cards between columns using drag-and-drop to update their status, and displaying deadlines and priority indicators.
Algorithm
Create a React component for the Kanban board
Define the data structure for tasks (id, title, description, status, deadline, priority)
Create a function to render the columns and tasks
Use a library like React Grid Layout to create a grid layout for the columns
Use a library like React Beautiful DND to enable drag-and-drop functionality
Create a function to update the task status when a card is moved
Render the deadlines and priority indicators for each task
Classes
KanbanBoard
: The main Kanban board componentColumn
: A single column componentTaskCard
: A single task card componentDeadlineIndicator
: A deadline indicator componentPriorityIndicator
: A priority indicator component
Code
KanbanBoard.js
import React from 'react';
import Column from './Column';
import TaskCard from './TaskCard';
import DeadlineIndicator from './DeadlineIndicator';
import PriorityIndicator from './PriorityIndicator';
const KanbanBoard = () => {
const [tasks, setTasks] = useState([
{ id: 'task-1', title: 'Task 1', description: 'This is task 1', status: 'To Do', deadline: '2023-01-01', priority: 'High' },
{ id: 'task-2', title: 'Task 2', description: 'This is task 2', status: 'In Progress', deadline: '2023-01-15', priority: 'Medium' },
{ id: 'task-3', title: 'Task 3', description: 'This is task 3', status: 'Done', deadline: '2023-01-31', priority: 'Low' },
]);
const handleDragEnd = (result) => {
const { destination, source } = result;
if (!destination) return;
const task = tasks.find((task) => task.id === source.droppableId);
const newStatus = destination.droppableId;
setTasks((prevTasks) =>
prevTasks.map((prevTask) =>
prevTask.id === task.id ? { ...prevTask, status: newStatus } : prevTask
)
);
};
return (
<div>
<Column id="To Do" title="To Do">
{tasks.filter((task) => task.status === 'To Do').map((task) => (
<TaskCard
key={task.id}
task={task}
handleDragEnd={handleDragEnd}
/>
))}
</Column>
<Column id="In Progress" title="In Progress">
{tasks.filter((task) => task.status === 'In Progress').map((task) => (
<TaskCard
key={task.id}
task={task}
handleDragEnd={handleDragEnd}
/>
))}
</Column>
<Column id="Done" title="Done">
{tasks.filter((task) => task.status === 'Done').map((task) => (
<TaskCard
key={task.id}
task={task}
handleDragEnd={handleDragEnd}
/>
))}
</Column>
{tasks.map((task) => (
<DeadlineIndicator
key={task.id}
deadline={task.deadline}
/>
))}
{tasks.map((task) => (
<PriorityIndicator
key={task.id}
priority={task.priority}
/>
))}
</div>
);
};
export default KanbanBoard;
Column.js
import React from 'react';
const Column = ({ id, title, children }) => {
return (
<div>
<h2>{title}</h2>
<div>{children}</div>
</div>
);
};
export default Column;
TaskCard.js
import React from 'react';
const TaskCard = ({ task, handleDragEnd }) => {
return (
<div>
<h3>{task.title}</h3>
<p>{task.description}</p>
<DeadlineIndicator deadline={task.deadline} />
<PriorityIndicator priority={task.priority} />
<button onClick={() => handleDragEnd({ id: (link unavailable) })}>
Move to next column
</button>
</div>
);
};
export default TaskCard;
DeadlineIndicator.js
import React from 'react';
const DeadlineIndicator = ({ deadline }) => {
return (
<span>{deadline}</span>
);
};
export default DeadlineIndicator;
PriorityIndicator.js
import React from 'react';
const PriorityIndicator = ({ priority }) => {
let color;
switch (priority) {
case 'High':
color = 'red';
break;
case 'Medium':
color = 'yellow';
break;
case 'Low':
color = 'green';
break;
default:
color = 'gray';
}
return (
<span style={{ color }}>{priority}</span>
);
};
export default PriorityIndicator;
Explanation
The code creates a Kanban board with three columns (To Do, In Progress, Done) and renders tasks as draggable cards within each column. The tasks have deadlines and priority indicators, which are displayed as text and colored dots, respectively. The user can drag and drop tasks between columns to update their status.
Possible Future Enhancements
Add support for editing task details
Add support for assigning tasks to users
Add support for due dates and reminders
Integrate with a backend API for data persistence
Add more advanced drag-and-drop functionality (e.g., sorting within columns)
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