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;

`js
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;

`json
{
"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

![Edit recursing-sun-uwl85](https://codesandbox.io/s/recursing-sun-uwl85?fontsize=14&hidenavigation=1&theme=dark)

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

`js
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