Extend the bookshelf implementation

ram/ram/models.py

@@ -3,7 +3,7 @@ import os
 from django.db import models
 from django.utils.safestring import mark_safe
 
-from ram.utils import DeduplicatedStorage
+from ram.utils import DeduplicatedStorage, get_image_preview
 
 
 class Document(models.Model):
@@ -28,3 +28,37 @@ class Document(models.Model):
         return mark_safe(
             '<a href="{0}" target="_blank">Link</a>'.format(self.file.url)
         )
+
+
+class Image(models.Model):
+    order = models.PositiveIntegerField(default=0, blank=False, null=False)
+    image = models.ImageField(
+        upload_to="images/", storage=DeduplicatedStorage, null=True, blank=True
+    )
+
+    def image_thumbnail(self):
+        return get_image_preview(self.image.url)
+
+    image_thumbnail.short_description = "Preview"
+
+    def __str__(self):
+        return "{0}".format(os.path.basename(self.image.name))
+
+    class Meta:
+        abstract = True
+        ordering = ["order"]
+
+
+class PropertyInstance(models.Model):
+    property = models.ForeignKey(
+        "metadata.Property",  # To avoid circular dependencies
+        on_delete=models.CASCADE
+    )
+    value = models.CharField(max_length=256)
+
+    def __str__(self):
+        return self.property.name
+
+    class Meta:
+        abstract = True
+        verbose_name_plural = "Properties"

ram/ram/urls.py

@@ -28,6 +28,7 @@ urlpatterns = [
     path("api/v1/consist/", include("consist.urls")),
     path("api/v1/roster/", include("roster.urls")),
     path("api/v1/dcc/", include("driver.urls")),
+    path("api/v1/bookshelf/", include("bookshelf.urls")),
 ] + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
 
 if settings.DEBUG: