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@dhtmlx/gantt-data-provider

v0.2.0

Published

Data proxy between client side Gantt widget and a server side API

Downloads

26

Readme

Gantt Data Provider

Data proxy between client side Gantt widget and a server side API

NPM package

How to use

REST backend

import { RestDataProvider } from "@dhtmlx/gantt-data-provider";

// create an instance
const server = new RestDataProvider(url); // url = https://some.com

// get data
server.getData().then(({ tasks, links }) => {
    console.log(tasks, links);
});

// save changes
server.saveData({ 
    action: "add-task", /* add-task|update-task|delete-task|add-link|delete-link */
    obj: { /* GanttItem/LinkItem */ }
}).then(res => {
    console.log(res.id);
})

Backend URLs

  • tasks

    • add-task POST: {url}/tasks
    • update-task PUT: {url}/tasks/{id}
    • delete-task DELETE: {url}/tasks/{id}
  • links

    • add-link POST: {url}/links
    • update-link PUT: {url}/links/{id}
    • delete-link DELETE: {url}/links/{id}

Backend responses

For all actions client expect that server will respond with valid json object. Returning non-json response will be processed as an error.

For add-link/add-task actions, client expect that response will contain the server side ID (string or number) for the newly added item

{ id:"some" }

Data back propagation

It possible to update data after saving. To do so, you need to init the provider like next

// create an instance
const server = new RestDataProvider(url, {
    task: res => updateTask(res),
    link: res => updateLink(res)
});

after add-link/add-task/update-link/update-task actions, the updateTask/updateLink handlers will be called with response details, so the saved task/link can be updated ( or you can trigger any other custom after-save processing )