Change a task with labels and attributes in admin panel

cvat/apps/engine/admin.py

@@ -4,6 +4,66 @@
 # SPDX-License-Identifier: MIT
 
 from django.contrib import admin
+from .models import Task, Segment, Label, AttributeSpec
 
-# Register your models here.
+class SegmentInline(admin.TabularInline):
+    model = Segment
+    readonly_fields = ('start_frame', 'stop_frame')
+    can_delete = False
 
+    # Don't show on admin index page
+    def has_add_permission(self, request, object=None):
+        return False
+
+class AttributeSpecInline(admin.TabularInline):
+    model = AttributeSpec
+    extra = 0
+    max_num = None
+
+class LabelInline(admin.TabularInline):
+    model = Label
+    show_change_link = True
+    extra = 0
+    max_num = None
+
+class LabelAdmin(admin.ModelAdmin):
+    # Don't show on admin index page
+    def has_module_permission(self, request):
+        return False
+
+    inlines = [
+        AttributeSpecInline
+    ]
+
+
+class TaskAdmin(admin.ModelAdmin):
+    date_hierarchy = 'updated_date'
+    readonly_fields = ('size', 'path', 'created_date', 'updated_date',
+        'overlap', 'flipped')
+    list_display = ('name', 'mode', 'owner', 'created_date', 'updated_date')
+    search_fields = ('name', 'mode', 'owner_username', 'owner_first_name',
+        'owner_last_name', 'owner_email')
+    inlines = [
+        SegmentInline,
+        LabelInline
+    ]
+
+    # A callable object to use inside search_fields
+    def owner_first_name(self, obj):
+        return obj.owner.first_name
+
+    # A callable object to use inside search_fields
+    def owner_last_name(self, obj):
+        return obj.owner.last_name
+
+    # A callable object to use inside search_fields
+    def owner_email(self, obj):
+        return obj.owner.email
+
+    # Don't allow to add a task because it isn't trivial operation
+    def has_add_permission(self, request):
+        return False
+
+
+admin.site.register(Task, TaskAdmin)
+admin.site.register(Label, LabelAdmin)