docs/content/tutorials/react-publish-data-set.md

title	description
Publish a Data Set	Tutorial to add dataset publishing capabilities to a basic React app.

Requirements

This is a continuation of the React App Setup tutorial, so make sure you have done all the steps described in there.

1. React App Setup

Open src/index.js from your marketplace/ folder.

Define Asset

First, let's add the asset that we want to publish.

To do that, we need to define the asset based on the OEP-08 metadata structure. An asset can have multiple files attached to it and each file's url value will be encrypted during the publish process. To download that file later on, this value will be decrypted during the consume process.

Let's create a new file src/asset.js and fill it with:

GITHUB-EMBED 2765a7e6ae/src/asset.js js GITHUB-EMBED

Then import this asset definition at the top of src/index.js:

GITHUB-EMBED 2765a7e6ae/src/index.js js 5 GITHUB-EMBED

Handle Asset Publishing

Now that we have an asset to submit, we need a function to handle it. Just before render() { let's add this registerAsset function:

GITHUB-EMBED 2765a7e6ae/src/index.js js 40-52 GITHUB-EMBED

The last thing we need is a button to start our registration inside the render() function:

GITHUB-EMBED 2765a7e6ae/src/index.js js 111-113 GITHUB-EMBED

Note how we disable the button when Web3 is not available to reduce user confusion. Within the Ocean Protocol flow of registering, searching, and consuming, only searching is possible without Web3.

In your browser, you should now end up like this:

When you click on the Register asset button, you should get four separate dialog boxes from MetaMask, in a series, i.e. the second one only appears after you accept/approve the first one, and so on.

Have a look into console.log to see the various steps of the register process. If you have no errors in your console.log, then you have successfully registered an asset.

Final Result

Here is the full source of src/index.js that you should have if you followed this tutorial:

GITHUB-EMBED 2765a7e6ae/src/index.js js 1-5,6-16,18-27,34-38,96-113,119-124 GITHUB-EMBED

Move on to Get & Use a Data Set.