Laravel Relationship Structure with Polymorphic Relations

Question

I have a few tables like so...

FreeLook    
  - id

SignVendor
  - id

PaintVendor
  - id

VendorJob
  - vendor_id
  - vendor_type
  - free_look_id
  - quote_id

Quote
  - id

When a PaintVendor or SignVendor is chosen for a FreeLook , a VendorJob will be created and it has a polymorphic relationship so that I can use one table for both of the SignVendor and PaintVendor jobs. So, essentiall, I want to be able to do this...

FreeLook::find(1)->signVendorJob // gets the sign vendor job from VendorJob for that freelook

Here, I can't use a belongsTo relationship because I cannot distinguish between a sign or paint vendor within the query (or at least I don't know of a way)

FreeLook::find(1)->signVendor // gets the sign vendor for that freelook

The problem is that I am getting the sign vendor through the VendorJob and Laravel doesn't have a hasOneThrough

FreeLook::find(1)->signVendor->quote // gets the sign vendor quote from VendorJob for that freelook

Since a SignVendor can have more than one Quote , I only want to get the quote related to the FreeLook , or VendorJob

Am I going to need to write custom MySQL queries for all of these, or am I overcomplicating things, or just missing something?

Thanks for any help you can afford!

Answer 1

you'll use the morph relation as mentioned in the doc.s

so in the VendorJob model

// the morph relation 
public function vendorable()
{
    return $this->morphTo();
}

// the quote relation
public function quote()
{
     return $this->hasOne('App\Quote');
}

and in PaintVendor model

 public function paintVendor()
{
    return $this->morphMany('App\VendorJob', 'vendorable');
}

and the same for SignVendor . now FreeLook::find(1)->signVendor will return a list of all signVendor records so you'll have to loop them like:

foreach(FreeLook::find(1)->signVendor as $vendor)
    {
        // fetching the quote of every signVendor related to FreeLook num. 1
        $vendor->quote;
    }

I hope this helps you.