new concept of status abstract of a device

ereuse_devicehub/parser/models.py

@@ -2,6 +2,7 @@ from citext import CIText
 from flask import g
 from sqlalchemy import BigInteger, Column, Sequence, SmallInteger
 from sqlalchemy.dialects.postgresql import UUID
+from sqlalchemy.orm import backref
 
 from ereuse_devicehub.db import db
 from ereuse_devicehub.resources.action.models import Snapshot
@@ -56,7 +57,11 @@ class PlaceholdersLog(Thing):
 
     placeholder_id = Column(BigInteger, db.ForeignKey(Placeholder.id), nullable=True)
     placeholder = db.relationship(
-        Placeholder, primaryjoin=placeholder_id == Placeholder.id
+        Placeholder,
+        backref=backref(
+            'placeholder_logs', lazy=True, cascade="all, delete-orphan", uselist=True
+        ),
+        primaryjoin=placeholder_id == Placeholder.id,
     )
     owner_id = db.Column(
         UUID(as_uuid=True),

ereuse_devicehub/resources/device/models.py

@@ -666,6 +666,15 @@ class Device(Thing):
             action = next(e for e in reversed(actions) if e.type == 'VisualTest')
             action.functionality_range = value
 
+    def is_abstract(self):
+        if not self.placeholder:
+            return ''
+        if self.placeholder.is_abstract:
+            return 'Abstract'
+        if self.placeholder.binding:
+            return 'Twin'
+        return 'Real'
+
     def is_status(self, action):
         from ereuse_devicehub.resources.device import states
 
@@ -883,7 +892,9 @@ class Placeholder(Thing):
     )
     device = db.relationship(
         Device,
-        backref=backref('placeholder', lazy=True, cascade="all, delete-orphan", uselist=False),
+        backref=backref(
+            'placeholder', lazy=True, cascade="all, delete-orphan", uselist=False
+        ),
         primaryjoin=device_id == Device.id,
     )
     device_id.comment = "datas of the placeholder"

ereuse_devicehub/templates/inventory/device_list.html

@@ -448,7 +448,7 @@
                           {{ dev.binding and dev.binding.phid or dev.placeholder and dev.placeholder.phid  or '' }}
                       </td>
                       <td>
-                          {{ dev.binding and dev.binding.is_abstract and '✓' or dev.placeholder and dev.placeholder.is_abstract and '✓' or '' }}
+                          {{ dev.is_abstract() }}
                       </td>
                       <td>
                         {% for t in dev.tags | sort(attribute="id") %}