Code snippets that will come handy

PHP

Loop variables in blade

Check if the item is first or last in the collection.

@foreach ($users as $user)
    @if ($loop->first)
        This is the first iteration.
    @endif

    @if ($loop->last)
        This is the last iteration.
    @endif

    <p>This is user {{ $user->id }}</p>
@endforeach

Other $loop stuff

Property	Description
$loop->index	The index of the current loop iteration (starts at 0).
$loop->iteration	The current loop iteration (starts at 1).
$loop->remaining	The iterations remaining in the loop.
$loop->count	The total number of items in the array being iterated.
$loop->first	Whether this is the first iteration through the loop.
$loop->last	Whether this is the last iteration through the loop.
$loop->even	Whether this is an even iteration through the loop.
$loop->odd	Whether this is an odd iteration through the loop.
$loop->depth	The nesting level of the current loop.
$loop->parent	When in a nested loop, the parent's loop variable.

Comments

Comments within blades have the following syntax.

{{-- This comment will not be present in the rendered HTML --}}

Requests

Retrieving Boolean Input Values

//returns true for 1, "1", true, "true", "on", and "yes". All other values will return false:
$archived = $request->boolean('archived'); 

File storage

Route::post('process', function (Request $request) {
    $path = $request->file('photo')->store('photos'); //Or $request->photo->store('images')
    dd($path); // photos/3hcX8yrOs2NYhpadt4Eacq4TFtpVYUCw6VTRJhfn.png

    $photo = $request->file('photo');
    $filename = 'profile-photo-' . $request->id . '.' . $file->getClientOriginalExtension(); //Or $request->photo->extension()
    $path = $photo->storeAs('photos', $filename);
    dd($path); // photos/profile-photo-100.png

    //Or Multiple files
    // $paths  = [];
    // foreach ($photos as $photo) {
    //     $extension = $photo->getClientOriginalExtension();
    //     $filename  = 'profile-photo-' . time() . '.' . $extension;
    //     $paths[]   = $photo->storeAs('photos', $filename);
    // }
    //
    // dd($paths); //array:2 ["photos/profile-photo-1517315875.gif","photos/profile-photo-1517315875.png"]
});

Retriving files

$filename = User::where('id', Auth::user()->id())->firstOrFail('filename');
$filename = 'profile-photo-' . Auth::user()->id() . '.jpg';
$path = Storage::path('photos/' . $filename);

if(Storage::exists($path)){
        return Response::download($path, $filename);
}

Eloquent

Database manipulation

//Set the entry, i.e. update existing entry OR create then update that entry
public function setDashboardConfigs($vars)
{ 
    $entry = DashboardSetting::firstOrNew(
        ['role_id' => $vars['id']] //Retrive if role_id=num exist or instantiate a new DashboardSetting instance
    );
    $entry->dashboard_items = json_encode($vars['items']);
    $entry->save();
    return response()->json($entry->toArray());
}

//Sum of column values
$data = CookRating::select('CookID')
    ->with('cook:cook_name,id')
    ->whereDate('AddedDate', '>=', $date[0])
    ->whereDate('AddedDate', '<=', $date[1])
    ->where('Status', 0)->groupBy('CookID')
    ->selectRaw('sum(NoOfBatch) as batches, sum(NoOfDays) as days, avg(Value) as rating')
    ->has('cook')
    ->get()
    ->map(function ($item) {
        return [
            "name" => ($item->cook? $item->cook->cook_name:null),
            "days" => $item->days,
            "batches" => $item->batches,
            "rating" => $item->rating + 0,
        ];
    });

//Counts in ranges
$ranges = [ // the start of each age-range.
    '0-17' => 0,
    '18-24' => 18,
    '25-34' => 25,
    '35-44' => 35,
    '45-54' => 45,
    '55-64' => 55,
    '64+' => 64,
];
$output = Trekuser::select('trek_user_dob as dob')
    ->get()
    ->map(function ($user) use ($ranges) {
        $age = Carbon::parse($user->dob)->age;
        foreach ($ranges as $key => $breakpoint) {
            if ($breakpoint >= $age) {
                $user->range = $key;
                break;
            }
        }
        return $user;
    })
    ->mapToGroups(function ($user, $key) {
        return [$user->range => $user];
    })
    ->map(function ($group) {
        return count($group);
    })
    ->sortKeys()->toArray();

Carbon

Date manipulation

$date1 = Carbon::parse($trek_start_date);
$date2 = Carbon::parse($trek_end_date);
$sumOfDays += $date1->diffInDays($date2);