CodeLab-01

In this codeLab you will learn how to use the Motoko Result type to handle success and errors cases in a dictionary application.

Create a new project folder

mkdir myapp && cd myapp

terminal 1

dfx start --clean

terminal 2

npx degit https://github.com/samlinux-development/codeLab-01.git

npm install

dfx deploy 

Add some words and definitions

Use the following function schema to add some words and definitions to the dictionary in terminal 2.

dfx canister call backend addWord '("word", "description")'

dfx canister call backend addWord '("query", "A query is an optimised way to execute operations on a canister where the state changes are not preserved. Queries are synchronous and can be made to any node that hosts the canister. Queries do not require consensus to verify the result.")'

dfx canister call backend addWord '("replica", "The replica is a collection of protocol components that are necessary for a node to participate in a subnet.")'

Call the frontend canister and search your words

echo http://$(dfx canister id frontend).localhost:4943

Local development

You can serve the frontend in development mode like you normally develop an app using the command. But first, make sure your run dfx deploy to create the .env file and all decalarations.

npm run dev

Deploying to the playground

To test your dApp under the Internet Computer's environment, you can deploy it to the Motoko Playground.

dfx deploy --playground