Serializer.normalize() not called if request body is FormData

[nwhittaker]

Observed

If the request's content-type is "x-www-form-urlencoded", and the route handler function calls normalizedRequestAttrs(), flow is directed towards:

miragejs/lib/route-handlers/function.js

Line 52 in b965b8a

attrs = this._getAttrsForFormRequest(request);

And away from:

miragejs/lib/route-handlers/function.js

Line 70 in b965b8a

attrs = this._getAttrsForRequest(request, modelName);

_getAttrsForRequest() ends up in _getJsonApiDocForRequest() where normalize() is called on the serializer:

miragejs/lib/route-handlers/base.js

Line 51 in b965b8a

return this.serializerOrRegistry.normalize(body, modelName);

However, _getAttrsForFormRequest() does not end up in _getJsonApiDocForRequest() so the serializer's normalize() method is never called.

Expected

A request with form data also hits the serializer's normalize() method.