Faltu

Search sort, filter, limit and iterate over an array of objects in Mongo-style.

Installation

In NodeJS:

npm install faltu --save

For other projects simply download and include the file in your pages:

<script src="faltu.min.js"></script>

Usage

All the data passed is expected to be an array or objects.

e.g:

[record, record, ..., record]

All the data returned is also of the same type.

For example:

var data = [{
  name: "John",
  age: 16
},{
  name: "Doe",
  age: 18
},{
  name: "Smith",
  age: 22
}];

Pass the array to constructor:

In NodeJS:

var Faltu = require('faltu');
var faltuData = new Faltu(data);

Searching

You can use find method for searching. Search for all the guys who are 18 years of age:

var newData = new Faltu(data).find({
  age: 18
}).get();

newData would look something like:

[{
  name: "Doe",
  age: 18
}]

Search for all the guys who are 18 years of age or older:

var newData = new Faltu(data).find({
  age: {
    $gte: 18 // $gte is similar to >= (greater than or equal to)
  }
}).get();

newData:

[{
  name: "Doe",
  age: 18
},{
  name: "Smith",
  age: 22
}]

Other supported comparison operators in find are:

• $lt: <
• $lte: <=
• $gt: >
• $ne: !=

Search for all the guys who are 18 or 16 years of age:

var newData = new Faltu(data).find({
  age: [16, 18]
}).get();

newData:

[{
  name: "John",
  age: 16
},{
  name: "Doe",
  age: 18
}]

Passing null, empty object {} or nothing to find means not performing any search.

Sorting

Use sort to sort the result in descending order by age:

var newData = new Faltu(data).find({
  age: [16, 18]
}).sort({
  age: -1 // 1 = ASC, -1 = DESC
}).get();

newData:

[{
  name: "Doe",
  age: 18
},{
  name: "John",
  age: 16
}]

Limit

Let's get only 1 object back:

var newData = new Faltu(data).find().limit(1).get();

newData:

[{
  name: "John",
  age: 16
}]

Skip

Let's skip 1st object:

var newData = new Faltu(data).find().skip(1).get();

newData:

[{
  name: "Doe",
  age: 18
},{
  name: "Smith",
  age: 22
}]

Skip & Limit

Let's skip 1st object:

var newData = new Faltu(data).find().skip(1).limit(1).get();

newData:

[{
  name: "Doe",
  age: 18
}]

Filtering

You can also perform jQuery-esque filtering yourself. Call filter method, pass a function.

var newData = new Faltu(data).find().filter(function (person) {
  return person.age == 16; // return true if you want to keep the object
}).get();

newData:

[{
  name: "John",
  age: 16
}]

Iterate

each iterates over all the records returned.

var newData = new Faltu(data).find(null).each(function(person, index){
  console.log('User name:', person.name);
});