com.devaddins.rdar v0.0.0

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Recursive Dereference and Replace

Recursively dereference elements of an object and replace associated palceholders in a string with the values of those elements.

Placeholders

There are two supported types of placeholders.

• Array
  • {ArrayName} ... {/ArrayName}
• Element
  • {{ElementName}}

Array Placeholders

Array placeholders will repeat for every item in the associated array. For example given this object...

let new_orders = {
    "orders": [
        { "name": "Customer One", "arrival-date": "1/1/2019" },
        { "name": "Customer Too", "arrival-date": "3/3/2019" },
        { "name": "Customer Also", "arrival-date": "9/9/2019" }
    ]
};

... and given this template ...

{{orders}}
Dear {{name}}: 
Your order has shipped and will arrive on {{arrival-date}}

{[/orders]}

... the output will look like this ...

Dear Customer One:
Your order has shipped and will arrive on 1/1/2019

Dear Customer Too:
Your order has shipped and will arrive on 3/3/2019

Dear Customer Also:
Your order has shipped and will arrive on 9/9/2019

Element Placeholders

Element placeholders can reach down the object tree and they can also be functions. For example given this object...

let greet = {
    eol: '\n',
    planets: {
        rand: {
            planet: function() {
                let plns = ['Mercury', 'Venus', 'Earth', 'Mars', 
                'Jupiter', 'Saturn', 'Uranus', 'Neptune', 'Pluto'];
                return plns[Math.floor(Math.random()*plns.length)];
            }
        } 
    }, 
    greetings: [
        {greeting: 'Good Morning'}, 
        {greeting: 'Good Afternoon'}, 
        {greeting: 'Good Night'}
    ]
}

... and given this template ...

let template = '{[greetings]}{{greeting}} {{planets.rand.planet}}{{eol}}{[/greetings]}';

... the output will look something like this ...

Good Morning Jupiter!
Good Afternoon Jupiter!
Good Night Jupiter!