I have a block of code in which I am passing a Carbon date that looks like this:
2017-08-18 22:53:50.031922
And want to compare it to created_at time stamps of some records. However, it seems that the records are not being filtered out; is the comparison in the where statement valid?
$test = Auth::user()->tests()->with([
'participants.testRecords' => function ($query) use ($latestCapture) {
$query->select('id', 'score', 'test_id', 'participant_id', 'capture_timestamp', 'score', 'created_at');
$query->where('test_records.created_at', '>', $latestCapture);
}])->findOrFail($id)->toArray();
If $latestCapture is instancej Carbon, you should rather use here:
$latestCapture->toDateTimeString()
to make sure you pass valid date string.
There is also one more thing - you should make sure created_at is filled in PHP and not in MySQL (this is default in Laravel) - if it's not you can expect time shifts when you have different time zones in PHP and MySQL
Related
I'd like to compare datetime values (with date AND time). First I tried this, but it does not work, as it only compares the date, not the time:
$events = $events->whereDate('end', '>=', $input['after']);
I thought that a simple where would help, but it does not:
$events = $events->where('end', '>=', $input['after']);
The reason for that is, that my input value is 2022-10-10T00:00:00 and the database read gives 2022-10-10 00:00:00 (the T in the middle was added in the input).
I'd like to stick to the isoformat (using the T), however inside the database that format gets casted to a value without T it seems. The reason for that might be the cast in the model: 'end' => 'datetime',
What would be the best way to solve this issue and compare datetime objects (and how)?
Change the model cast
Cast the input
What would be the best way to solve this issue and compare datetime objects
The best way is still to convert the input with the data type format of the date and time column
You can use : $dateConvert = date('Y-m-d H:i:s', strtotime($input['after']));
But I suggest you use carbon library :
$dateConvert = \Carbon\Carbon::parse($input['after'])->format('Y-m-d H:i:s');
And :
$events = $events->where('end', '>=', $dateConvert );
Is there any way to put a manual function inside a query in Laravel.
I've timestamp saved in string in DB. I want to convert timestamp from one timezone to another. All the timestamp is inserted in one time zone, and depending upon my user I fetch the timestamp and convert it into their timezone.
what I want to achieve is something like this..
$query = BlogCategory::select('merchant_id', userTime(added_at))
->where('site_id', $site_id)
->get();
userTime() function takes two parameter, the timestamp and the timezone and converts the timsestamp to time of the user.
I want to use userTime() function before fetching the data. I dont want to fetch the data first and then do foreach and so on.
I know I might be absolutely absurd but is there anything of this sort in Laravel?
Well you can achieved that using collection map
$query = BlogCategory::select('merchant_id', 'added_at')
->where('site_id', $site_id)
->get();
$dateAdded = $query->map(function ($data) {
// try this if error $data['merchant_id']
return array(
'merchant_id' => $data->merchant_id,
'added_at' => $this->userTime($data->added_at)
);
})
dd($dateAdded);
Read Collection documentation here: https://laravel.com/docs/5.8/collections
You should use the selectRaw statement and let your DB do this logic for you if you don't want to loop over the result set.
For example if your underlying database is MySQL you can use the CONVERT_TIMEZONE function and do something like this.
BlogCategory::selectRaw('merchant_id, CONVERT_TZ(added_at, "GMT", "MET") as added_at')
->where('site_id', $site_id)
->get();
I am having a little trouble comparing dates in Laravel, where the date is a specific format.
The field in the database has the date like this d-m-Y(20-04-2018) and I am trying to get a result where this date is greater than the date now using this.
$check= Usersubstitutions::where([
['user_id', '=', $request->user],
['date_to', '>=', date("d-m-Y")]
])->first();
And it never works. I var dumped to see what compares, using a foreach and it says that 20-05-2018 is NOT greater than 04-04-2018.
Convert your column to a date format, such as DATE, and then it will work as intended.
Since your field is a varchar try to cast it first to DATE then compare it with date('d-m-Y') like :
$check= Usersubstitutions::where('user_id', $request->user)
->where(DB::raw("DATE(date_to) >= '".date('d-m-Y')."'"))
->first();
NOTE : It will be better to convert the field type in your database to 'DATE'.
On Laravel 4+ you may use
->whereDate('date_to', '>=', date("d-m-Y")
For more examples, see first message of #3946 and this Laravel Daily article.
but you may also use the ->where() as its more convenient.
Try this:
$dayAfter = (new date()->modify('+1 day')->format('d-m-Y');
->where('date_to', '>=', $dayAfter)
Hope it helps. if not view this qn for further explanations
You seem to be storing a DATE in a varchar field. That's not a good idea. You need to either re-create the table and store date_to as a date using the standard SQL DATE format (and use the format Y-m-d when inserting) or cast the column to a date when selecting:
$check= Usersubstitutions::where([
['user_id', '=', $request->user],
[\DB::raw("STR_TO_DATE(date_to,'%d-%m-%Y')") ', '>=', date("Y-m-d")]
])->first();
Note this will make any indexes useless and will make the query run very very (very) slowly.
Note: STR_TO_TIME is MySQL only but there are equivalents in other DBMSs e.g. in SQL Server it seems to be CONVERT(DATE, date_to, 105)
I am trying to get the number of new users for each week using the created_at column. I am trying to use the whereBetweensyntax but it always return 0 even when it is suppose to return otherwise.
{{ DB::table('users')
->whereBetween('created_at', array(date("Y/m/d h:i:s", strtotime('sunday last week')), date("Y/m/d h:i:s", strtotime('saturday this week'))))->count(); }}
Any suggestions?
The query itself should work as written, though you might want to verify that created_at is a column of either timestamp, date, or datetime type. When you created the users table, did you use a migration to create your users table, and if so, did you specify $table->timestamps();? Or did you manually define the created_at column, and perhaps set it to a string?
A couple other (unrelated) suggestions:
• It appears that you're running this query in a view, echoing the count using blade. This logic would be better handled elsewhere, perhaps in your User model, and the result passed to the view by the controller.
• You can simplify your query using PHPs DateTime object, replacing your date(...strtotime...) with date_create(...):
$usersThisWeek = User::whereBetween(
'created_at', array(
date_create('sunday last week'),
date_create('saturday this week')
))->count();
I want to return all of the rows in my database table that are a day or less old. I'm using Laravel 4. This is what I tried:
$date = date('Y-m-d H:i:s');
return MainContact::where(DATEDIFF('timestamp', $date), '<=', 1)->get();
This doesn't work. I read the documentation and it doesn't seem like you can pass Laravel MySQL functions. timestamp is a datetime field. How can I compare these dates in Laravel 4?
The answer that user1977808 gave you is not good because MySQL can't use an index on the timestamp column, since it has to compute an output of the DATE_SUB function for every row. Avoid such queries, they have to process the entire table every time!
How about something like this:
return MainContact::where('timestamp', '>=', time() - (24*60*60))->get();
I put the >= in there because you said "a day or less old", so they must have timestamp that is later than yesterday.
Alternatively,
You can use Carbon API that bundle with Laravel.
ModelName::where( 'timestamp', '>=', Carbon::now() )->get();
Reference: http://laravel.com/docs/5.1/eloquent-mutators
You could also use whereDate(), whereDay(), whereMonth() and whereYear(). In this case, whereDate() could be used as such, with Carbon's easy date functions:
return MainContact::whereDate('dateField', '<', Carbon::now()->subDay())->get();
return MainContact::where('timestamp', '>=', time() - (24*60*60))->get();
You can also do a raw query by using:
$results = DB::query( 'query' );
You only don't the the model object back in the results var