Resolve "Object of type 'Action' is not JSON serializable"

Closes #148 (closed)

djangoldp/tests/models.py

 from django.conf import settings
 from django.contrib.auth import get_user_model
 from django.db import models
+from django.utils.datetime_safe import date
 
 from djangoldp.models import Model
 from djangoldp.permissions import AnonymousReadOnly
@@ -10,9 +11,13 @@ class Skill(Model):
     title = models.CharField(max_length=255, blank=True, null=True)
     obligatoire = models.CharField(max_length=255)
     slug = models.SlugField(blank=True, null=True, unique=True)
+    date = models.DateTimeField(auto_now_add=True, blank=True)
+
+    def recent_jobs(self):
+        return self.joboffer_set.filter(date__gte=date.today())
 
     class Meta:
-        serializer_fields = ["@id", "title"]
+        serializer_fields = ["@id", "title", "recent_jobs"]
         lookup_field = 'slug'
 
 
@@ -20,9 +25,14 @@ class JobOffer(Model):
     title = models.CharField(max_length=255, blank=True, null=True)
     skills = models.ManyToManyField(Skill, blank=True)
     slug = models.SlugField(blank=True, null=True, unique=True)
+    date = models.DateTimeField(auto_now_add=True, blank=True)
+
+    def recent_skills(self):
+        return self.skills.filter(date__gte=date.today())
 
     class Meta:
         nested_fields = ["skills"]
+        serializer_fields = ["@id", "title", "skills", "recent_skills"]
         container_path = "job-offers/"
         lookup_field = 'slug'