I am trying to save image on database to be used as background for the website. The problem is, I am getting Call to a member function fill() on null
Here is what I did
https://paste.laravel.io/ZoWBM
This simply means there is no any record in SiteSettings model with name_setting = $key.
You should always do a check like this:
if (is_null($siteSettingsUpdate)) {
// There is no such record in DB.
}
Related
Here's my code:
protected function expires(): Attribute
{
if ($this->started_at) {
$expiry = $this->started_at->addDays(20);
}
return Attribute::make(
get: fn () => $expiry ?? null
);
}
Running this code gives me an ErrorException with the message Undefined property: Models\Job::$started_at
I have found that I can work around this error by accessing the property through $this->attributes['started_at'] as follows:
protected function expires(): Attribute
{
if ($this->attributes['started_at']) {
$expiry = Carbon::parse($this->attributes['started_at'])->addDays(20);
}
return Attribute::make(
get: fn () => $expiry ?? null
);
}
However, this code feels a little inefficient because I'm manually using Carbon to parse the property back into a Carbon object. But if I do a dd($this->started_at) right before the if statement, it's already been cast to a Carbon object by Laravel and I'd really just like to use this object to make my code as clean as in the first example above.
I'd like to know the reason why $this->started_at is apparently available as a Carbon object in this context but somehow not usable (an undefined property) in the way I'm using it, and also I would like to know if there is another way to go about achieving my goal?
you can add custom attributes with
public function getExpireAttribute()
{
if ($this->started_at) {
$this->started_at->addDays(20);
}
return $this->started_at;
}
now you can access expire attribute like other, with
$model->expire
to make Eloquent casts dates to Carbon for you, add attribute to casts:
protected $casts = [
'started_at' => 'datetime',
];
The reason you are getting an "Undefined property" error when trying to access $this->started_at in your accessor method is because Laravel's model accessor methods are executed before the model attributes are hydrated.
This means that when your expires() method is executed, the started_at attribute may not have been set yet, and thus accessing it directly on the model instance will result in an "Undefined property" error.
One way to work around this is to use the getAttribute method provided by Laravel's Model class. This method allows you to retrieve the value of an attribute, even if it has not been set yet. Here's an updated version of your expires() method that uses getAttribute:
use Carbon\Carbon;
protected function getExpiresAttribute(): ?Carbon
{
$startedAt = $this->getAttribute('started_at');
if ($startedAt) {
return $startedAt->addDays(20);
}
return null;
}
In this version, we are using the getAttribute method to retrieve the value of the started_at attribute, even if it has not been set yet. We then use Carbon to manipulate the date, and return the result.
Note that we are using the getExpiresAttribute method instead of the expires method, because Laravel automatically maps get{AttributeName}Attribute method calls to corresponding attribute accessors. So, in this case, calling
$model->expires
will automatically execute the getExpiresAttribute method.
With this approach, you can use the started_at property directly in your code, and it will be automatically cast to a Carbon object by Laravel, without the need to manually parse it with Carbon.
Hope this helps.
i use mutator in my model to encrypt id:
public function getIdAttribute($value)
{
return encrypt($value);
}
but I want the default value to be the original value of the id and call the mutator when needed. is that possible?
If you want to be able to call the original value, and sometimes the encrypted value why don't you just add an extra function to your model ?
You won't use a mutator since you want to be able to grab the original value, but you can add an extra function like this in your model which you will be able to call when you want to receive encrypted value.
public function encryptedId()
{
return encrypt($this->id);
}
Or am I missing something?
You can using getRawOriginal() to get original value in lumen:
for example:
$model = Model::find('model_id');
return $model->getRawOriginal('column_name'));
I'm trying to automatically create a profile for a user when a user is created.
I'm using the created event and overriding the boot() method. But I when call the create() method on user->profile->create(), it says create was called on null. I checked and profile is null in this.
Here's the code:
static::created(function ($user) {
// it returns profile as null, thus create() can't be used on null.
$user->profile->create(['title' => $user->username,]);
});
Can anyone help me understand this? It's working in my tutor's code, and he is using Laravel 5.8 but I have version 7.1.
$user->profile returns the related model if any exists. You have to do $user->profile() which returns a query builder to query the relation. Try to do it like so:
$user->profile()->create(['title' => $user->username,]);
I have a Model Correo with a custom connection that changes dinamically.
The problem is that when I want to retrieve results from the database like this: Correo::on(session('conexion'))->get(), session('conexion') has the connection name, the following error appears:
Call to a member function newCollection() on null
I can get the results using this: DB::connection(session('conexion'))->table('correos')->get(), but I need the Model's methods and the previous one just returns a generic Collection.
Thanks!
You can use setConnection function
$correo = new Correo;
$correo->setConnection('yourConnectionName');
$data = $correo->find(1);
dd($data);
So based on the session ( if you don't have that many remote connections )
if (session('xyz')) {
$correo->setConnection('xyz');
} else {
$correo->setConnection('pqr');
}
`
Well, I solved it, when I created the model I wrote every property and then created every getter and setter, apparently it didn't like the new setConnection setter. I don't know why, but it stopped me from using it.
Use Illuminate\Http\Request;
public function registerAStudent(Request $request)
{
Student::Create($request->all());
}
I want to upload a row to the database table.
Form data is stored in the request variable and using Student model.
but can't update the database I'm getting following error:
ErrorException (E_RECOVERABLE_ERROR) HELP Argument 1 passed to
AdminController::registerAStudent() must be an instance of
Illuminate\Http\Request, none given
please give me a proper way to do it.