business-logics

A library to query business logics via truth table.

Business logics could be hardest parts to manage in a software when they are too complicated. Writing so many if-else block doesn't help usually too. But there is many simple solution to detech business logics and application behavior which is Truth Table.

You might see a simple truth table in following lines;

| is_logged_in | is_admin | read_permission | write_permission | |---------------|-------------|-------------------|-------------------| | true | false | true | false | | true | true | true | true |

With this library, business-logics, you might define your business logics as truth tables and query them whenever you need.

You don't have to write if-else blocks anymore.

🔧 Installation

$ yarn add business-logics

📖 Basic Usage

It is easy to use;

import BusinessLogics from 'business-logics'

const logics = new BusinessLogics({
  parameters: ['is_logged_in', 'is_admin'],
  results: {
    read: { default: false },
    write: { default: false }
  },
  data: [
    //  is_logged is_admin   read     write
    //--------------------------------------
    [   true,     false,     true,    false ],
    [   true,     true,      true,    true  ]
  ]
})

const status = logics.get({
  is_logged_in: true,
  is_admin: false
})

console.log(status)

These are following result of a query;

{
  "is_logged_in": true,
  "is_admin": false,
  "read": true,
  "write": false
}

If there is not any truth table definition for your query, you'll get your default values. So that you don't have to write all possible values for parameters.

🚀 VueJS Example

You might review simple usage for a VueJS application in following code;

import BusinessLogics from 'business-logics'

export default {
  data () {
    return {
      map: {
        parameters: ['is_logged_in', 'is_admin'],
        results: {
          read: { default: false },
          write: { default: false }
        },
        data: [
          //  is_logged is_admin   read     write
          //--------------------------------------
          [   true,     false,     true,    false ],
          [   true,     true,      true,    true  ]
        ]
      },
      isLoggedIn: true,
      isAdmin: false,
      logics: null
    }
  },

  mounted () {
    this.logics = new BusinessLogics(this.map)
  },

  computed: {
    status () {
      if (!this.logics) {
        return {}
      }
      return this.logics.get({
        is_logged_in: this.isLoggedIn,
        is_admin: this.isAdmin
      })
    }
  }
}

In this example, you can calculate the statuses of business logic with your truth table.

🔑 License

MIT © Özgür Adem Işıklı