feat: set usage policy from license profile

Signed-off-by: tdruez <tdruez@aboutcode.org>

Author: tdruez

license_library/admin.py

@@ -357,11 +357,15 @@ def set_assigned_tags_from_license_profile(self, request, obj):
         self.message_user(request, msg)
 
     def save_model(self, request, obj, form, change):
+        # Needs to be set before the `save_model` method call.
+        if obj.license_profile:
+            obj.set_usage_policy_from_license_profile()
+
         if change:
             obj_before_save = License.objects.get(id=obj.id)
             super().save_model(request, obj, form, change)
             # If a LicenseProfile is set or changed, apply the values of the
-            # this Profile to the license assigned tags.
+            # Profile to the license assigned tags.
             if obj.license_profile and obj.license_profile != obj_before_save.license_profile:
                 self.set_assigned_tags_from_license_profile(request, obj)
         else:
@@ -452,7 +456,7 @@ class LicenseTagHolderBaseAdmin(DataspacedAdmin):
     The purpose of this class is to be extended by LicenseProfileAdmin and
     LicenseTagGroupAdmin. It's used to add a LicenseTag queryset in the context
     of the add and changes views, to display special data (added through
-    javascript) about tags in the page like text and guidance information.
+    avascript) about tags in the page like text and guidance information.
     """
 
     change_form_template = "admin/license_library/tag_holder/change_form.html"
@@ -519,11 +523,12 @@ class LicenseProfileAdmin(LicenseTagHolderBaseAdmin):
         "name",
         "get_assigned_tags_html",
         "examples",
+        "default_usage_policy",
         "get_dataspace",
     )
     fieldsets = (
         ("", {"fields": ("name",)}),
-        ("", {"fields": ("examples", "notes", "dataspace", "uuid")}),
+        ("", {"fields": ("examples", "notes", "default_usage_policy", "dataspace", "uuid")}),
     )
     search_fields = ("name",)
     list_filter = DataspacedAdmin.list_filter + (ReportingQueryListFilter,)
@@ -553,10 +558,6 @@ class LicenseProfileAdmin(LicenseTagHolderBaseAdmin):
         will be Unknown.",
     )
 
-    def get_queryset(self, request):
-        qs = super().get_queryset(request)
-        return qs.prefetch_related("licenseprofileassignedtag_set__license_tag")
-
 
 @admin.register(LicenseCategory, site=dejacode_site)
 class LicenseCategoryAdmin(DataspacedAdmin):

license_library/migrations/0003_licenseprofile_default_usage_policy.py

@@ -0,0 +1,20 @@
+# Generated by Django 5.2.9 on 2026-02-09 02:10
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('license_library', '0002_initial'),
+        ('policy', '0002_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='licenseprofile',
+            name='default_usage_policy',
+            field=models.ForeignKey(blank=True, help_text='Default usage policy to be assigned to a license when using this license profile.', limit_choices_to={'content_type__app_label': 'license_library', 'content_type__model': 'license'}, null=True, on_delete=django.db.models.deletion.SET_NULL, to='policy.usagepolicy'),
+        ),
+    ]

license_library/models.py

@@ -209,6 +209,20 @@ class LicenseProfile(DataspacedModel):
         ),
     )
 
+    default_usage_policy = models.ForeignKey(
+        to="policy.UsagePolicy",
+        limit_choices_to={
+            "content_type__app_label": "license_library",
+            "content_type__model": "license",
+        },
+        null=True,
+        blank=True,
+        on_delete=models.SET_NULL,
+        help_text=_(
+            "Default usage policy to be assigned to a license when using this license profile."
+        ),
+    )
+
     class Meta:
         unique_together = (("dataspace", "name"), ("dataspace", "uuid"))
         ordering = ["name"]
@@ -986,6 +1000,20 @@ def set_assigned_tags_from_license_profile(self):
                 defaults={"value": profile_assigned_tag.value},
             )
 
+    def set_usage_policy_from_license_profile(self):
+        """
+        Set default usage_policy value from the license_profile
+        when usage_policy is not already defined.
+        """
+        apply_default_usage_policy = all([
+            not self.usage_policy,
+            self.license_profile,
+            self.license_profile.default_usage_policy,
+        ])
+
+        if apply_default_usage_policy:
+            self.usage_policy = self.license_profile.default_usage_policy
+
     @staticmethod
     def get_extra_relational_fields():
         return ["annotations", "external_references"]