mculep / many-to-many-demo

Venmo database models

Users have many - Transactions - Contacts Transactions have many - Comments Transactions belong to - a User (sender) - a User (recipient) Comments belong to - Users - Transactions

• As a User I can pay someone so that they're not mad at me.
• As a User I can collect money from someone else
• As a User I can comment on any User's Transaction
• As a User I can view my own Contact's Transactions
• As a User I can view all public Transactions

Attributes

User - id (Primary Key) - name - hash - account number Transaction - id (Primary Key) - amount - recipient_id (foreign key to Users) - sender_id (foreign key to User) Contacts - id (Primary Key) - user_id (foreign key to User) - contact_id (foreign key to User) Comments - id (Primary Key) - content - user_id (FK to User) - transaction_id (FK to Transaction)

Model generation commands

npx sequelize model:generate --name User --attributes 'name:string, hash:string, account_number:string'
npx sequelize model:generate --name Transaction --attributes 'amount:decimal, recipient_id:integer, sender_id: integer'
npx sequelize model:generate --name Contact --attributes 'user_id:integer, contact_id:integer'
npx sequelize model:generate --name Comment --attributes 'content:string, user_id:integer, transaction_id:integer'