json-filter

Usage (browser)

let filter = new JSON.filter({"allowed":"$string"});

let output = filter.apply({"allowed":"this is allowed","notallowed":"this is not allowed"});

//output = {"allowed":this is allowed"}

Usage (node.js)

npm install node-json-filter

JSON.filter = require("node-json-filter");

What is json-filter?

json-filter extends JSON with a filter function that will helps validate 'unverified' JSON objects.

• Verifies object name and value type
• Allows for multiple types of objects (arrays, json objects, strings, numbers etc..)
• Verifies array objects with a single filter
• Able to verify complex json objects (nested arrays, objects etc..)
• Allows for simple switch cabilitity (case & default)

Usage

	//If using in NODE.js (otherwise ignore)
	JSON.filter = require('node-json-filter');
	
	var filter = new JSON.filter( {
		"str":"$string",
		"num":"$number",
		"bool":"$boolean",
		"obj":{"str":"$string"},
		"arry":["$string"],
		"arryobj":[
		    {"str":"$string"}
		],
		"complex":{
		    "arry":[
			{"num":"$number"}
		    ],
		    "obj":{"str":"$string"},
		    "num":"$number"
		},
		"parsing":[{
		    "num":"$number",
		    "bool":"$boolean",
		    "str":"$string"
		}],
		"all":{
		    "$all":{
		        "str":"$string",
		        "num":"$number"
		    }
		},
		"default":{
		    "$default":{
		        "str":"$string",
		        "num":"$number",

			"$default":"$string"
		    }
		}
	});

	console.log( filter.apply({
            "str":"test",
            "num":123,
            "bool":true,
            "obj":{"str":"test"},
	    "arry":["test","me","out],
            "arryobj":[
                {"str":"test1"},
                {"str":"test2"},
                {"str":"test3"}
            ],
            "complex":{
                "arry":[
                    {"num":12},
                    {"num":"123"},
                    {"num":12.3}
                ],
                "obj":{"str":"test123"},
                "num":"12.5"
            },
    	    "parsing":[
        		{"num":"12",
        		 "bool":"true",
        		 "str":"some str"},
        		{"num":"12.5",
        		 "bool":"false"},
        		{"num":"don't show this one",
        		 "bool":0},
        		{"bool":1},
        		{"bool":"don't show this one"}
    	    ],
    	    "all":{
    	        "test1":{
    	            "str":"test",
    	            "num":123
    	        },
    	        "test2":{
    	            "str":"test",
    	            "num":1234
    	        }
    	    },

	    "default":{
	    	//Specified directly (case)
    	        "str":"testy",
    	        "num":123,
		
		//Covered by $default
		"someother":"stuff",
		"plusthis":"stuff"
    	    },
    	    "filterout":"you won't see this property"
        }));