From d28e324a7f5f6d6a21f45cda61ec30018a29bf31 Mon Sep 17 00:00:00 2001
From: Abhilash Murthy <abhilashmurthy92@gmail.com>
Date: Wed, 13 Jan 2021 16:26:21 +0800
Subject: [PATCH 1/2] [BUGFIX] include may not have a .relation and just be a {
 [modelName]: true } sometimes

---
 lib/utilities/relationship-utils.js | 2 +-
 lib/utils.js                        | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/utilities/relationship-utils.js b/lib/utilities/relationship-utils.js
index b30a365..b1d9b71 100644
--- a/lib/utilities/relationship-utils.js
+++ b/lib/utilities/relationship-utils.js
@@ -45,7 +45,7 @@ function getInvalidIncludesError (message) {
 }
 
 function isLoopbackInclude (ctx) {
-  return ctx.args && ctx.args.filter
+  return ctx.args && ctx.args.filter && ctx.args.filter.include
 }
 
 function isJSONAPIInclude (req) {
diff --git a/lib/utils.js b/lib/utils.js
index 3efac19..6e04ebd 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -292,7 +292,7 @@ function setRequestedIncludes (include) {
       }
 
       if (inc instanceof Object) {
-        return inc.relation
+        return inc.relation || _.findKey(inc, value => value === true)
       }
     })
   }

From 1d61d900370eb649f2c833038635f4ef92ff3409 Mon Sep 17 00:00:00 2001
From: Abhilash Murthy <abhilashmurthy92@gmail.com>
Date: Tue, 7 Jan 2025 21:41:33 +0800
Subject: [PATCH 2/2] fix(deserializer): unable to create polymorphic
 relationship

---
 lib/deserializer.js | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/lib/deserializer.js b/lib/deserializer.js
index feb10a8..f4ecceb 100644
--- a/lib/deserializer.js
+++ b/lib/deserializer.js
@@ -1,6 +1,7 @@
 'use strict'
 
 var _ = require('lodash')
+var utils = require('./utils')
 
 function defaultBeforeDeserialize (options, cb) {
   cb(null, options)
@@ -78,6 +79,17 @@ function belongsToRelationships (options) {
     if (!relationship.data) {
       options.result[fkName] = null
     } else {
+      // https://github.com/digitalsadhu/loopback-component-jsonapi/compare/master...grahambates:loopback-component-jsonapi:master
+      if (serverRelation.polymorphic) {
+        var relatedType = relationship.data.type
+        var modelClass = _.find(model.app.models, function (model) {
+          var plural = utils.pluralForModel(model)
+          return plural === relatedType
+        })
+
+        var discriminator = serverRelation.polymorphic.discriminator
+        options.result[discriminator] = modelClass.modelName
+      }
       options.result[fkName] = relationship.data.id
     }
   })