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ZeroToBlockchain Chapter 7: Building the Seller User Experience

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In this chapter, we will create the Seller Company view and add server-side services to support it. This runs on HyperLedger Fabric Version 1.0. The code that we will write is managed in this chapter and all the subsequent chapters in the following folder structure:

Chapter 07
  ↳ controller
     ↳restapi
       router.js
        ↳features
           ↳composer
             autoLoad.js
             hlcAdmin.js
             hlcClient.js
             queryBlockChain.js
             Z2B_Services.js
             Z2B_Utilities.js
           ↳ text
               multi-lingual.js
               resources.js
  ↳ HTML
    index.html
    admin.html
    buyer.html
    ceateConnectionProfile.html
    createMember.html
    createOrder.html
    deleteConnectionProfile.html
    getMemberSecret.html
    removeMember.html
    seller.html
     ↳CSS
       pageStyles.css
     ↳js
       z2b-admin.js
       z2b-buyer.js
       z2b-events.js
       z2b-initiate.js
       z2b-seller.js
       z2b-utilities.js
  ↳ network
   permissions.acl
   queries.qry
    ↳lib
      sample.js
    ↳models
      base.cto
      events.cto
      sample.cto

Two new files are introduced in this chapter and two existing files are updated:

Files used in this chapter

Web Server Code Unique to this Chapter

  • hlcClient.js
    • This file is update to support the seller interface on the server side

Defining the business network

  • network/permissions.acl
    • This file is updated to allow the seller to access Orders and to execute selected transactions.
    • It determines precisely what transactions a member can execute and what assets a member can see. The basic rule is "If authority is not specifically granted in this file, then access is denied."

Web Browser Code

  • z2b-seller.js
    • This file contains all of the browser functional code to support the seller user experience
  • seller.html
    • This contains the HTML framework for the seller experience. Content for this framework is generated by the functions in the z2b-seller.js file
    • Text on this page is determined by the selected language (default is US English)