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Blockchain Quick Start Guide

You're reading from   Blockchain Quick Start Guide A beginner's guide to developing enterprise-grade decentralized applications

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Product type Paperback
Published in Dec 2018
Publisher Packt
ISBN-13 9781789807974
Length 222 pages
Edition 1st Edition
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Concepts
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Authors (2):
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Xun (Brian) Wu Xun (Brian) Wu
Author Profile Icon Xun (Brian) Wu
Xun (Brian) Wu
Weimin Sun Weimin Sun
Author Profile Icon Weimin Sun
Weimin Sun
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Table of Contents (9) Chapters Close

Preface 1. Introduction to Blockchain Technology FREE CHAPTER 2. Ethereum Fundamentals 3. Overview of Solidity Programming 4. Building an Ethereum Blockchain Application 5. Exploring an Enterprise Blockchain Application Using Hyperledger Fabric 6. Implementing Business Networks Using Hyperledger Composer 7. Blockchain Use Cases 8. Other Books You May Enjoy

Deploying a smart contract

As you might have noticed, two migration-related files were created by the previous command, Migrations.sol and 1_initial_migration.js. Migrations.sol stores a number that corresponds to the last applied "migration" script. When you add a new contract and deploy the contract, the number of the last deployment in stores will increase. After the contract has run once, it will not run again. The numbering convention is x_script_name.js, with x starting at 1, that is 1_initial_migration.js. Your new contracts would typically come in scripts starting at 2_....

In our case, we will add a new migration contract to deploy CrowdFunding. Let's create a file called 2_deploy_contracts.js. 

CrowdFunding.sol defines the constructor as follows:

constructor (address _owner, uint _minimumToRaise, uint _durationProjects,
string _name...
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