Constructing json object using javascript

Question

I am facing issues while constructing an object using javascript. I want this:

{
 "p_id": "2",
 "p_name": "weblogic",
 "ip_list": [
 {
 "ip_id": 2690
 },
 {
 "ip_id": 2692
 },
 {
 "ip_id": 2693
 }
 ]
}

Below is the javascript code that I am using to get the data into the object:

var ipArray = [];
secTagJSON.p_name = "weblogic";
secTagJSON.p_id = "2";
for (var index=0; index < selectedArray.length; index++){
 secTagJSON.ip_list.push("ip_id": selectedArray[index]);
}

I am able to construct the properties for p_id and p_name but struggling to create the the ip_list. Please let me know how to get this constructed using javascript.

Code for posting to the server:

var ipArray = [];
secTagJSON.p_name = "weblogic";
secTagJSON.p_id = 2;
for (var index=0; index < selectedArray.length; index++){
 secTagJSON.ip_list.push({"ip_id": selectedArray[index]});
}
console.log (secTagJSON);
console.log (JSON.stringify(secTagJSON));
 $http.post("http://server:port/api/v1/tags").
 success(function(data) {
 console.log (data)
 });

• Paul: What you just posted is a valid way to construct it using Javascript.
• SergeS: Hmmm . What you mean by constructing ? ... because i suspect that something is terribly wrong by your words
• DontVoteMeDown: How are you creating the json?
• Pradeep: Please find the below code that I have written to construct the json message: var ipArray = []; secTagJSON.p_name = "weblogic"; secTagJSON.p_id = "2"; for (var index=0; index < selectedArray.length; index++){ secTagJSON.ip_list.push("ip_id": selectedArray[index]); } But I am not getting in the desired format as mentioned in my question
• Walter Macambira: @JAAulde made a simple but important observation.

Answer 1

Simply do this:

var obj = { ip_list: [] };
obj.p_name = "weblogic";
obj.p_id = "2";
for (var i = 0, j = selectedArray.length; i < j; i++)
 obj.ip_list.push({ ip_id: selectedArray[i] });

Note that your ip_list is actually an array of objects. So, when you iterate over it, remember that each var item = json.ip_list[i] will return an object, that you can access its properties using: item['ip_id'].

Note that obj is an Javascript object, it is not an JSON. If you want the JSON, you can use JSON.stringify(obj). This will return your JSON (string).

Hope I've helped.

• Pradeep: Yes. I got it working now but when I am trying to post the json to the server, I am getting 415 (Unsupported Media Type) error. Could you please let me know what I am missing?
• Walter Macambira: How are you sending it? Did you set the contentType? And if you did, is your server expecting JSON format? I edited my answer telling you that if you wnat to send the JSON, you need to serialize your javascript object.

Answer 2

Try:

secTagJSON.p_name = "weblogic";
secTagJSON.p_id = "2";
secTagJSON.ip_list = [];
for (var index=0; index < selectedArray.length; index++){
 secTagJSON.ip_list.push({"ip_id": selectedArray[index]});
}

you forgot your {} around "ip_id": etc... You also need to declare that ip_list is an array. Your ip_list is an array of objects. I would guess that your script was not running as it was.

Posting to your server you should use:

$http.post('server:port/api/v1/tags', secTagJSON).sucess(...

• Pradeep: Thanks. It worked but when I am trying to post the json I am getting 415 error - 415 (Unsupported Media Type). Can you please let me know where I am going wrong?
• Pradeep: I have added the code to post to the server in my question. I am using AngularJs for http post calls.
• bluetoft: @user883561 It looks like you're not actually sending the data... so the content type is not getting set by i'm guessing Angular... try $http.post('server:port/api/v1/tags', secTagJSON).sucess(...