Eloquent: How to find in text fileds via polymorphic relations? - laravel

Question

Table structure
entity
id - integer
title - string
...
person
id - integer
name - string
...
customers
id - integer
body - text
concrete_id - integer
concrete_type - string
Models:
class Customer extends Model
{
...
public function concrete()
{
return $this->morphTo();
}
...
}
Person and Entity models have
public function customers()
{
return $this->morphMany(Customer::class, 'concrete');
}
How to find all customers where type is 'entity' and where entity.title = 'abc'?
I try do something like this,
$obj = Customer::whereHas(['concrete' => function($query){
$query->where('title', 'like', 'foo%');
}])->get();
but I have an error:
ContextErrorException in Builder.php line 825: Warning: strpos()
expects parameter 1 to be string, array given
For example, i can do this via native MySQL request:
SELECT *
FROM `customers`
LEFT JOIN `entities` ON (entities.id = customers.concrete_id )
WHERE `concrete_type` = "entity" AND entities.title LIKE "%foo%"
How to do this via Eloquent?

Answer 1

You work in right way, try this code:
Customer::whereHas('concrete', function ($query) {
$query->where('title', 'like', 'foo%')
})->get();
Or you can try another way:
Entity::has('concrete')->where('title', 'like', 'foo%')->get()

Answer 2

Rewrote the answer according to your raw MySQL:
Customer::
->join('entities', function($join)
{
$join->on('entities.id', '=', 'customers.concrete_id')
->where('entities.title', 'like', 'foo%');
})
->get();
I hope this helps :)

Answer 3

Laravel now not support 'whereHas' for 'MorphTo' relations.
Look laravel/framework issue 5429
And, if you want to do what is planned, you can use BelongsToMorph relation.
I added to Customer model:
public function entity()
{
return BelongsToMorph::build($this, Entity::class, 'concrete');
}
and after that, request working as need it:
Customer::whereHas('entity', function ($query) {
$query->where('entities.title', 'like', '%foo%');
})->get()->toArray();