Laravel 7 One To Many Relations? - php

Question

Below are all of the models, migrations and controller.
Donation Model
class Donation extends Model
{
protected $guarded =[];
public function users(){
return $this->hasMany(User::class);
}
public function items(){
return $this->belongsTo(DonationItems::class);
}
}
Donation Items Model:
class DonationItems extends Model
{
protected $guarded=[];
public function donation(){
return $this->hasMany(Donaition::class);
}
}
Donation Items Migration:
public function up()
{
Schema::create('donation_items', function (Blueprint $table) {
$table->id();
$table->string('category');
$table->timestamps();
});
}
Donation Migration:
public function up()
{
Schema::create('donations', function (Blueprint $table) {
$table->id();
$table->string('item');
$table->unsignedInteger('user_id');
$table->unsignedInteger('donation_item_id');
$table->timestamps();
});
}
In my controller I want to access the items as follows:
$don = Donation::all();
$don->items;
But I'm unable to achieve this.

Answer 1

Its not working because laravel follows one rule for relationships:
Remember, Eloquent will automatically determine the proper foreign key column on the Comment model. By convention, Eloquent will take the "snake case" name of the owning model and suffix it with _id. So, for this example, Eloquent will assume the foreign key on the Comment model is post_id.
So you can try by supplying local and foreign id
So it would look something like this
Donation Model
class Donation extends Model
{
protected $guarded =[];
public function users(){
return $this->hasMany(User::class);
}
public function items(){
return $this->belongsTo(DonationItems::class, 'donation_item_id', 'id');
}
}
Donation Items Model:
class DonationItems extends Model
{
protected $guarded=[];
public function donation(){
return $this->hasMany(DonationItems::class, 'id', 'donation_item_id');
}
}
I am writing from my head you might need to swap local and foreign ID's