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json-formater

Version: 0.9.1

Build Status

Node.js JSON data formater / comparator

Imagine:

You have stream where you recieve json data (e.g. twitter user/site stream) and you need save this data in DB, but before you save - you need classificate and format this data in your format.

or

You need validate json object (check whether properties exist and with correct values).

This module can do this.

Install

npm install json-formater

Usage

var formater = require('json-formater');

//your skeleton
var expected_json = {
    status: true,
    data: {
        person_name: '@ignore_value',
        person_surname: '@ignore_value'
    }
}

//e.g. data from some stream
var actual_json = {
    status: true,
    data: {
        person_name: 'John',
        person_surname: 'Formater'
    }
}

//formatted object skeleton
var person = {
    name: '["data"]["person_name"]',
    surname: '["data"]["person_surname"]'
}

formater(expected_json, actual_json, person, function(match, person_obj) {

    if (match) {
        console.log(person_obj);
        //output (formatted data): { name: 'John', surname: 'Formater' }
    } else {
        console.log('Person data not found in actual json object');
    }
    
});

Params:

  • expected_json: json skeleton who must coincide against actual_json (param is required)
  • actual_json: any json data (param is required)
  • person: formatted object skeleton (param is optional)

Callback params:

  • match:
    • true: if expected_json matches with actual_json,
    • false: if don't
  • person_obj: formatted json object (only if formatted object skeleton was passed)

About @ignore_value

Write this flag (@ignore_value) as expected object property if you not interested in object property data, but this property must exist / or you necessary these data set to "formatted" object.

Important:

  • Only properties which is in "expected" object, can be set to "formatted" object.
  • For data retrieving flags use only double quotes (e.g. name: '["data"]["person_name"]').

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Node.js JSON data formater / comparator

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