ST

It is based on the original package st.js

JSON Selector + Transformer

preview

Select: Query any JSON tree to select exactly the subtree you are looking for.
Transform: Transform any JSON object to another by parsing with a template, also written in JSON

You can also mix and match Select AND Transform to perform partial transform, modularize JSON objects, etc.

Features

1. Select

Select a JSON object or its subtree that matches your criteria

Step 1. Take any JSON object

var data = {
  "links": [
    { "remote_url": "http://localhost" },
    { "file_url": "file://documents" },
    { "remote_url": "https://blahblah.com" }
  ],
  "preview": "https://image",
  "metadata": "This is a link collection"
}

Step 2. Find all key/value pairs that match a selector function

var sel = ST.select(data, function(key, val) {
  return /https?:/.test(val);
})

Step 3. Get the result

var keys = sel.keys();
//  [
//    "remote_url",
//    "remote_url",
//    "preview"
//  ]

var values = sel.values();
//  [
//    "http://localhost",
//    "https://blahblah.com",
//    "https://image"
//  ]

var paths = sel.paths();
//  [
//    "[\"links\"]",
//    "[\"links\"]",
//    ""
//  ]

2. Transform

Use template to transform one object to another

Step 1. Take any JSON object

var data = {
  "title": "List of websites",
  "description": "This is a list of popular websites"
  "data": {
    "sites": [{
      "name": "Google",
      "url": "https://google.com"
    }, {
      "name": "Facebook",
      "url": "https://facebook.com"
    }, {
      "name": "Twitter",
      "url": "https://twitter.com"
    }, {
      "name": "Github",
      "url": "https://github.com"
    }]
  }
}

Step 2. Select and transform with a template JSON object

var sel = ST.select(data, function(key, val){
            return key === 'sites';
          })
          .transformWith({
            "items": {
              "": {
                "tag": "<a href=''></a>"
              }
            }
          })

Step 3. Get the result

var keys = sel.keys();
//  [
//    "tag",
//    "tag",
//    "tag",
//    "tag"
//  ]

var values = sel.values();
//  [
//    "<a href='https://google.com'>Google</a>",
//    "<a href='https://facebook.com'>Facebook</a>",
//    "<a href='https://twitter.com'>Twitter</a>",
//    "<a href='https://github.com'>Github</a>"
//  ]

var objects = sel.objects();
//  [
//    {
//      "tag": "<a href='https://google.com'>Google</a>"
//    }, {
//      "tag": "<a href='https://facebook.com'>Facebook</a>"
//    }, {
//      "tag": "<a href='https://twitter.com'>Twitter</a>"
//    }, {
//      "tag": "<a href='https://github.com'>Github</a>"
//    }
//  ]

var root = sel.root();
//  {
//    "items": [{
//      "tag": "<a href='https://google.com'>Google</a>"
//    }, {
//      "tag": "<a href='https://facebook.com'>Facebook</a>"
//    }, {
//      "tag": "<a href='https://twitter.com'>Twitter</a>"
//    }, {
//      "tag": "<a href='https://github.com'>Github</a>"
//    }]
//  }

3. Transform HTTP

allows to recover by post any value of an external dataset

var data = {
    "id": 1
};

var template = {
  "test":"",
  "test2":""
}

Get the result

{
  "test": "1",
  "test2": {
    "error": true,
    "message": "key invalid"
  }
}

function http

allows to recover any value of an external dataset

Param	Description	Required
URL	url where the POST is made	yes
Type	HTTP verb used is supported POST and GET	yes
Mode	Web =0 , Server =1	yes
Headers	arrangement with the following structure that represents the header of the POST to send, by default it is assigned “Content-Type”, “application / json” the others must be specified if not required you must send null, eg [{‘name’: ‘filter’,’value’: {‘tabla’: ‘adquiriente’,’nit’: ‘900032159’}},{‘name’: ‘field’,’value’: ‘email’}]’	yes
body	body of the request in JSON format if it does not exist, do not send the value eg httpPost (‘url’, null)}}	yes

in case of requiring values of the data as parameter of the function use the syntax

[[data]]  httpPost('[[id]]',null)

the parameters of the function must be encoded see

example

httpPost('webhook%2F860001619','POST',1,'%5B%7B%27name%27%3A%20%27filter%27%2C%27value%27%3A%20%7B%27tabla%27%3A%20%27adquiriente%27%2C%27nit%27%3A%20%27900032159%27%7D%7D%2C%7B%27name%27%3A%20%27field%27%2C%27value%27%3A%20%27email%27%7D%5D')

Usage

In a browser

<script src="st.js"></script>
<script>
var parsed = ST.select({ "items": [1,2,3,4] })
                .transformWith({
                  "": {
                    "type": "label", "text": ""
                  }
                })
                .root();
</script>

In node.js

Install through npm:

$ npm install stjs

Use

const ST = require('st');

const parsed = ST.select({ "items": [1,2,3,4] })
                .transformWith({
                  "": {
                    "type": "label", "text": ""
                  }
                })
                .root();

SelectTransform

JSON template over JSON

ST