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Overwriting Original Values In Collections

I am fetching data from database and storing it on $groups. It has different created_at for each entry.
I want to overwrite on created_at field in collection, just before returning it to the view, and have nice ->diffForHumans() version.
$groupsArray = $messages;
foreach($groupsArray as $key => $group) {
var_dump($groupsArray[$key]['created_at']); // works: 2015-10-17 21:55:46.000000'
var_dump($groupsArray[$key]['created_at']->diffForHumans()); // Error: A two digit month could not be found Data missing
$groupsArray[$key]['created_at'] = $groupsArray[$key]['created_at']->diffForHumans(); // Not Working
}
return $groupsArray->toJson();
If I change groupsArray = $messages->toArray();, the '// Error' bit of above chunk changes to Call to a member function diffForHumans() on string.
Eventually, I need to return it as json as it is ajax request. I want to overwrite on created_at, so I can use group[i]['created_at'] in javascript part in the view, after returning and get Carbon versions.

First, make sure 'created_at' is in your $dates array in your model.
Like described on http://laravel.com/docs/5.1/eloquent-mutators#date-mutators
Second, you can iterate and update over a collection by doing the following:
$messages->transform(function ($item, $key) {
$item->difference = $item->created_at->diffForHumans(); // 10 hrs ago
return $item;
});
$messages->toJson();

use &you can replace the original value !
foreach($groupsArray as &$key => &$group) {
var_dump($groupsArray[$key]['created_at']);
var_dump($groupsArray[$key]['created_at']->diffForHumans());
$groupsArray[$key]['created_at'] = $groupsArray[$key] ['created_at']->diffForHumans(); // Not Working
}

Access Array of Objects after filtering

so I have a JSON object returned from a webservice. Now I want to:
get a subset which matches a categoryTitle i pass as parameter (this seems to work)
from my filtered resultset I want to get another array of objects (helpsubjects), and for each of this subjects I want to extract the SubjectTitle.
Problem: It seems my Array of HelpSubjects does not exist, but I can't figure out why and hope you could help.
Perhaps this piece of commented code makes it more clear:
$.fn.helpTopicMenu = function (data) {
that = this;
var categoryContent = contents.filter(function (el) {
return el.CategoryTitle == data.categoryTitle;
});
debug('categorys Content: ', categoryContent); //see below
var container = $('#subjectList');
var subjectList = categoryContent.HelpSubjects;
debug('Subjects in Category: ', subjectList); // UNDEFINED?!
$.each(subjectList, function (i, item) {
container.append(
$('<li></li>').html(subjectList[i].SubjectTitle)
);
});
the line debug('categorys Content: ', categoryContent); returns the following object as shown in the picutre (sadly I can't add a picture directly to the post yet, so here's the link): http://i.stack.imgur.com/0kKWx.png
so as I understand it, there IS actually a HelpSubjects-Array, each entry containing a SubjectTitle (in the picture there actually is only one entry, but I need to have the Artikel einfügen as my html.
Would be great if you can help me.

The variable categoryContent set is an array of objects.
Try debugging categoryContent[0].HelpSubjects and see if you can access the property. If so, you can also loop this array if need be.

Dynamic Variable Names with JavaScript - Two arrays?

I'm trying to generate markers for every user in my $.each loop in such a way that I can select each marker using the corresponding userId of a given user.
$.each($.parseJSON(window.usersArray), function (i, user) {
window.userMarkers[user['id']] = L.marker(98.76, 12.34).addTo(map);
console.log(window.userMarkers[user['id']]);
});
EDIT
I get the error:
Cannot set property '3' of undefined, where 3 is the user's ID.

You need to create the object (or array depending on your needs) before you can add anything to it.
window.userMarkers = {};
$.each($.parseJSON(window.usersArray), function (i, user) {
window.userMarkers[user['id']] = L.marker(98.76, 12.34).addTo(map);
console.log(window.userMarkers[user['id']]);
});

Solution: Define the array before setting properties to it! Example:
window.userMarkers = new Array();

How to append database values to JSON data

I have a JSON which lists the values from database. Below is the JSON data of 2 rows from the database.
[{"Name":"P1","Description":"pd1","Value":"v1","Attribute":"a1"},{"Name":"P1","Description":"pd1","Value":"v2","Attribute":"a2"}]
database values are the result of a left join query. Only 'Value' and 'Attribute' fields are different. Can I append that fields to JSON instead of multiple sets of record? I know there is 'push' to do this, but I am unaware where and how to use this in my code. below is the code for fetching values from db and serializing the values.
GetProfileDataService GetProfileDataService = new BokingEngine.MasterDataService.GetProfileDataService();
IEnumerable<ProfileData> ProfileDetails = GetProfileDataService.GetList(new ProfileSearchCriteria { Name = strProfileName });
JavaScriptSerializer javaScriptSerializer = new JavaScriptSerializer();
string strSerProfileDetails = javaScriptSerializer.Serialize(ProfileDetails);
context.Response.ContentType = "text/json";
context.Response.Write(strSerProfileDetails);
Below is my getJSON
$(document).ready(function () {
$.getJSON('ProfileHandler.ashx', { 'ProfileName': 'Profile 1' }, function (data) {
$.each(data, function (k, v) {
alert(v.Attribute+' : '+v.Value);
});
});
});
Please help me here.

There are several things you can do.
Store value and attribute as arrays:
[{"Name":"P1","Description":"pd1","Value":["v1", "v2"],"Attribute":["a1", "a2"]}]
Or store them as a 'symbol'-separated string:
[{"Name":"P1","Description":"pd1","Value":"v1;v2"],"Attribute":"a1;a2"]}]
In order to use the first case, you'll have to try and figure out how to format the ProfileDetails in order to have javaScriptSerializer.Serialize parse it correctly. You will likely have to convert your data first in order for this to work (i.e. convert value and attribute to arrays).
For the second case to work you could modify your GetProfileDataService.GetList method so that values and attributes are merged to symbol-separated strings (something like this: GROUP BY to combine/concat a column)

how to get last inserted row id in sqlite

function insertToProject(cast, pName)
{
db.execute('INSERT INTO project (cd, pn) VALUES (?,?)', cast, pName);
var x = last_insert_rowid();
return x;
}
I have been trying this using javascript in titanium appcelerator. Can anybody tell me what I am doing wrong?

For this you can use the lastInsertRowId property of database object.
You can use like:
var x = db.lastInsertRowId;
lastInsertRowId
lastInsertRowId : Number
The identifier of the last populated row
Please check this link for more details : Titanium.Database.DB

You may also do:
db.transaction(function(tx) {
tx.executeSql("INSERT INTO project (cd, pn) VALUES (?,?)", cast,
function(tx, res) {
var id = res.insertId;
});
});
Thus, getting the result of the successful insert and then its property insertId