Laravel hasMany error. 'site_id' doesn't have a default value - php

Question

I have following method in a controller
public function store(Request $request)
{
$site = Site::create([
"path" => $request->path,
"site_link" => $request->link,
]);
if ($request->features) {
$features = explode(',', $request->features);
foreach ($features as $feature) {
$site->features()->save(SiteFeature::create(["feature" => $feature]));
}
}
return response()->json($site, 201);
}
Site model has this method
public function features()
{
return $this->hasMany('App\SiteFeature');
}
And this is my $fillable property of a SiteFeature
protected $fillable = ['feature', 'site_id'];
By some reason I get next error
local.ERROR: SQLSTATE[HY000]: General error: 1364 Field 'site_id'
doesn't have a default value (SQL: insert into site_features
(feature) values (fes)) {"exception":"[object]
(Illuminate\Database\QueryException(code: HY000): SQLSTATE[HY000]:
General error: 1364 Field 'site_id' doesn't have a default value (SQL:
insert into site_features (feature) values (fes))

Answer 1

The Model::create method actually creates a record in your database and since you're not specifying a required site_id, it is failing which is why you're seeing this error.
It looks like you're trying to use Laravel's relationships to save a new SiteFeature for the site but you're passing what would be an already existing object (if the query didn't fail) to the relation's save method.
You need to either pass a new instance of SiteFeature, that has not already been saved to the database to the save method:
$this->features()->save(new SiteFeature(['feature' => $feature]));
or you can use the relation's create method to avoid having to pass in an instance altogether, you just need to provide the attributes:
$this->features()->create(['feature' => $feature]);

Answer 2

try this
in your model features
public function features()
{
return $this->hasMany('App\SiteFeature','site_id','id');
}
you model SiteFeature
public function siteFeatures()
{
return $this->belongsTo('App\features', 'site_id', 'id');
}

Answer 3

$site = Site::create([
"path" => $request->path,
"site_link" => $request->link,
]);
Doesn't return the last insert id... try
$site = new Site;
$site->path = $request->path;
$site->site_link = $request->link;
$site->save();
As for this part:
if ($request->features) {
$features = explode(',', $request->features);
foreach ($features as $feature) {
$site->features()->save(SiteFeature::create(["feature" => $feature]));
}
}
You could do this if the above code doesnt work...
if ($request->features) {
$features = explode(',', $request->features);
foreach ($features as $feature) {
$sf = new SiteFeature;
$sf->feature = $feature;
$sf->site_id = $site->id;
$sf->save();
}
}