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You're reading from  Blockchain Quick Start Guide

Product typeBook
Published inDec 2018
Reading LevelIntermediate
PublisherPackt
ISBN-139781789807974
Edition1st Edition
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Authors (2):
Xun (Brian) Wu
Xun (Brian) Wu
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Xun (Brian) Wu

Xun (Brian) Wu is a senior blockchain architect and consultant. With over 20 years of hands-on experience across various technologies, including Blockchain, big data, cloud, AI, systems, and infrastructure, Brian has worked on more than 50 projects in his career. He has authored nine books, which have been published by O'Reilly, Packt, and Apress, focusing on popular fields within the Blockchain industry. The titles of his books include: Learn Ethereum (First Edition), Learn Ethereum (Second Edition), Blockchain for Teens, Hands-On Smart Contract Development with Hyperledger Fabric V2, Hyperledger Cookbook, Blockchain Quick Start Guide, Security Tokens and Stablecoins Quick Start Guide, Blockchain by Example, and Seven NoSQL Databases in a Week.
Read more about Xun (Brian) Wu

Weimin Sun
Weimin Sun
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Weimin Sun

Weimin Sun has 20 years' of experience working in the financial industry. He has worked for top-tier investment and commercial banks such as J.P. Morgan, Bank of America, Citibank, and Morgan Stanley, where he also managed large teams for developing IT applications. Weimin has also held corporate titles such as executive director and senior VP in some of these firms. Weimin has in-depth knowledge of the blockchain technology, data science, data architecture, data modeling, and big data platforms. He holds Ph.D, M.B.A and M.Sc degrees. He has co-authored Blockchain Quick Start Guide and published several statistical journal papers.
Read more about Weimin Sun

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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, string _website)

To deploy a contract, with optional constructor arguments, you can call the truffle deploy function, deployer.deploy(contract...

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Blockchain Quick Start Guide
Published in: Dec 2018Publisher: PacktISBN-13: 9781789807974

Authors (2)

author image
Xun (Brian) Wu

Xun (Brian) Wu is a senior blockchain architect and consultant. With over 20 years of hands-on experience across various technologies, including Blockchain, big data, cloud, AI, systems, and infrastructure, Brian has worked on more than 50 projects in his career. He has authored nine books, which have been published by O'Reilly, Packt, and Apress, focusing on popular fields within the Blockchain industry. The titles of his books include: Learn Ethereum (First Edition), Learn Ethereum (Second Edition), Blockchain for Teens, Hands-On Smart Contract Development with Hyperledger Fabric V2, Hyperledger Cookbook, Blockchain Quick Start Guide, Security Tokens and Stablecoins Quick Start Guide, Blockchain by Example, and Seven NoSQL Databases in a Week.
Read more about Xun (Brian) Wu

author image
Weimin Sun

Weimin Sun has 20 years' of experience working in the financial industry. He has worked for top-tier investment and commercial banks such as J.P. Morgan, Bank of America, Citibank, and Morgan Stanley, where he also managed large teams for developing IT applications. Weimin has also held corporate titles such as executive director and senior VP in some of these firms. Weimin has in-depth knowledge of the blockchain technology, data science, data architecture, data modeling, and big data platforms. He holds Ph.D, M.B.A and M.Sc degrees. He has co-authored Blockchain Quick Start Guide and published several statistical journal papers.
Read more about Weimin Sun