从上周的SQL和Laravel获取数据

Question

I am currently working on a web application and using ChartJS. I need to get data from the last 7 days and count it. I explain:

I need to count the number of client that registered each days from the seven last days to display it with ChartJS.

I have some problems with the SQL Request.

Get today's date:

$jj = date("Y-m-d", mktime(0, 0, 0, date("m"), date("d"), date("Y")));

In my database, i have a 'created_at' column with timestamp like this :

2018-08-21 11:07:59

For the request, I followed some tutorials and did this:

SELECT count(client.id) FROM parcel WHERE created_at = :dateclient, array('dateclient' => $jj);

But the request isn't working, I assume that there are some errors. If some pros knows how to do it !

By the way: I did the request for one date for the moment, but I will need to do it for seven days

Answer 1

Please use eloquent query to overcome SQL Injection like following

Here I am assuming you have Models folder inside App folder else you can directly use Parcel:: without Models\Parcel

$lastWeek = date('Y-m-d', strtotime("-7 day", date('Y-m-d')));
/* In the following code you can directly get the count value */
$parcelCount  = Models\Parcel::whereDate('created_at', $lastWeek)->count();

OR using DB::raw

$parcelCount = Models\Parcel::select(\DB::raw("COUNT(id) as parcel_count"))
    ->whereDate('created_at', $lastWeek)
    ->first();