Eloquent morphOne relationship doesn't limit to one relation
eloquent, laravel, laravel-4, polymorphism
Solution
Maybe I'm late for the party, but this worked for me!
# Do we have location already?
if($person->location) {
return $person->location()->update($location);
}
return $person->location()->create($location);
Problem
I am having a issue with an Eloquent `morphOne` relationship where it is creating new entries rather than updating the one that already exists. Basically I have a number of models (for example, let's say `Person` and `Building`) that both need a location, so I have created a `Location` model: ``` class Location extends Eloquent { public function locationable() { return $this->morphTo(); } } ``` Then in my other models I have this: ``` class Person extends Eloquent { // ... /** * Get the person's location * * @return Location */ public function location() { return $this->morphOne('Location', 'locationable'); } // ... ``` ``` class Building extends Eloquent { // ... /** * Get the building's location * * @return Location */ public function location() { return $this->morphOne('Location', 'locationable'); } // ... ``` When I run the following test code, it creates the location entry fine, but if I repeat it, it creates more entries. ``` $person = Person::first(); $loc = new Location; $loc->lat = "123"; $loc->lng = "321"; $person->location()->save($loc); ``` Am I doing something wrong here? I would have expected `morphOne` to constrain this to one entry per type, so the last entry in the table below should not exist: ``` +---------------------+--------------------------+ | locationable_id | locationable_type | +---------------------+--------------------------+ | 2 | Building | | 3 | Building | | 2 | Person | | 2 | Building | +---------------------+--------------------------+ ```