I am seeking assistance in updating data within a JSON file using NODE.JS. Currently, my method adds the data with the same ID as expected. However, upon receiving the data back, it eliminates the last duplicate because it encounters the old value first. I believe what I truly need to do is locate the JSON element by its ID and then replace it with the new value.
Below is the AJAX request code snippet:
putComment: function(commentJSON, success, error) {
$.ajax({
type: 'post',
url: 'http://localhost:8080',
data: JSON.stringify(commentJSON),
success: function(comment) {
success(comment)
},
error: error
});
},
And here is my NODE code snippet:
if (req.method == 'POST') {
req.on('data', function(chunk) {
var element = JSON.parse(chunk);
fs.readFile("comments-data.json", 'utf8', function(err, json) {
var array = JSON.parse(json);
array.push(element);
fs.writeFile("comments-data.json", JSON.stringify(array), function(err) {
if (err) {
console.log(err);
return;
}
console.log("The file was saved!");
});
});
res.end('{"msg": "success"}');
});
};
The following shows the data containing duplicate IDs:
[
{
"id": "c1",
"parent": null,
"created": "2016-08-12T19:57:21.282Z",
"modified": "2016-08-12T19:57:21.282Z",
"content": "test",
"fullname": "John Clark",
"profile_picture_url": "https://viima-app.s3.amazonaws.com/media/user_profiles/user-icon.png",
"created_by_current_user": true,
"upvote_count": 0,
"user_has_upvoted": false
},
{
"id": "c1",
"parent": null,
"created": "2016-08-12T19:57:21.282Z",
"modified": 1471031853696,
"content": "test 123",
"fullname": "John Clark",
"profile_picture_url": "https://viima-app.s3.amazonaws.com/media/user_profiles/user-icon.png",
"created_by_current_user": true,
"upvote_count": 0,
"user_has_upvoted": false
}
]