With the onAuthenticate hook you can check if a client is authenticated and authorized to view the current document. Now, create a new Y document, and register it with Tiptap: import ) #Authentication & Authorization The actual data is then flowing between the clients, without the server knowing anything about it and that’s great to take the first steps with collaborative editing.įirst, install the dependencies: npm install yjs y-webrtc y-prosemirror WebRTC uses a server only to connect clients with each other. ![]() The most popular technologies to do that are WebRTC and WebSockets, so let’s have a closer look at those: #WebRTC ![]() Somehow, all clients need to interchange document modifications at some point. It’s totally fine to change a document while being offline and merge it with other changes when the device is online again. And to achieve that, changes don’t even have to come in order. Y.js is a conflict-free replicated data types implementation, or in other words: It’s really good in merging changes. With the Collaboration extension you can tell Tiptap to track changes to the document with Y.js. The underyling schema Tiptap uses is an excellent foundation to sync documents. The content won’t sync over the wire yet, but we’ll cover that in an additional video. You’ll learn why the history handling differs for collaborative editors. In this video I’m adding the Collaboration extension to Tiptap to show you how you can add collaborative text editing capabilities to your editor. get ( ' documents ', ' firstDocument ' ) doc. * 'firstDocument' is the id of the document * 'documents' is collection name(table name in sql terms) type ) const shareDBServer = new ShareDB () const connection = shareDBServer. * We are using this npm package called rich-text * To Make it compatible with our quill editor. when there is a conflict they are resolved in such a way thatĬonst WebSocket = require ( ' ws ' ) const WebSocketJSONStream = require ( ' ' ) const ShareDB = require ( ' sharedb ' ) /**.All the operations are broadcasted to all the clients first.Since there are lot of approaches out there, on high level Some CRDTs work with Peer to peer ( mostly) message propagation, some rely on client-server models. There are a lot of different CRDT algorithms that allow the implementation of shared types. Those data structure do not make assumptions on how the data are replicated, or the order of the data it arrives. This technique is used by Google Docs, Google Slides, Wave etc.Ĭonflict-free Replicated Data Type (CRDT) is a set of data structures that can be replicated across network and can guarantee the data to be consistent and correct eventually. In case of conflicts the server's transform function takes two operations as inputs and tries to apply the second operation preserving the first operations intended change.These actions are sent to the server where each operation is applied to the document and broadcasts to the other clients.Every action(insert or delete) is represented as an operation.Operational Transformation (OT) is an algorithm/technique for the transformation of operations such that they can be applied to documents whose states have diverged, bringing them both back to the same state. There are two most widely used algorithms to handle the conflicts: To build a collabrative one we need to know how to handle the conflicts during collabration. ![]() If you already know how the collabration works realtime feel free to skip the theory section. In this article we will see how to build a collabrative rich text editor.
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