Implement warnings

src/chains/admin.py

@@ -1,5 +1,8 @@
+from typing import List, Optional
+
 from django.contrib import admin
 from django.db.models import Model
+from django.http import HttpRequest
 
 from .models import Chain, Feature, GasPrice, Wallet
 
@@ -38,6 +41,15 @@ class ChainAdmin(admin.ModelAdmin[Chain]):
     )
     inlines = [FeatureInline, GasPriceInline, WalletInline]
 
+    def get_readonly_fields(
+        self, request: HttpRequest, obj: Optional[Chain] = None
+    ) -> List[str]:
+        if request.user.groups.filter(name="support"):  # type: ignore
+            readonly_fields = [f.name for f in self.model._meta.fields]
+            readonly_fields.remove("warning")
+            return readonly_fields
+        return []
+
 
 @admin.register(GasPrice)
 class GasPriceAdmin(admin.ModelAdmin[GasPrice]):

src/chains/migrations/0037_chain_warning.py

@@ -0,0 +1,18 @@
+# Generated by Django 4.0.5 on 2022-10-24 14:29
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("chains", "0036_alter_chain_transaction_service_uri_and_more"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="chain",
+            name="warning",
+            field=models.CharField(blank=True, max_length=255, null=True),
+        ),
+    ]

src/chains/migrations/0038_auto_20221024_1543.py

@@ -0,0 +1,22 @@
+# Generated by Django 4.0.5 on 2022-10-24 15:43
+
+from django.apps.registry import Apps
+from django.contrib.auth.models import Group, Permission
+from django.db import migrations
+from django.db.backends.base.schema import BaseDatabaseSchemaEditor
+
+
+def create_support_group(apps: Apps, schema_editor: BaseDatabaseSchemaEditor) -> None:
+    support_group, created = Group.objects.get_or_create(name="support")
+    permission = Permission.objects.filter(codename="change_chain")
+    if permission:
+        support_group.permissions.add(permission[0])
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("chains", "0037_chain_warning"),
+    ]
+
+    operations = [migrations.RunPython(create_support_group, migrations.RunPython.noop)]

src/chains/models.py

@@ -119,6 +119,7 @@ class RpcAuthentication(models.TextChoices):
     recommended_master_copy_version = models.CharField(
         max_length=255, validators=[sem_ver_validator]
     )
+    warning = models.CharField(max_length=255, blank=True, null=True)
 
     def get_disabled_wallets(self) -> QuerySet["Wallet"]:
         all_wallets = Wallet.objects.all()

src/chains/serializers.py

@@ -118,6 +118,7 @@ class ChainSerializer(serializers.ModelSerializer[Chain]):
     ens_registry_address = EthereumAddressField()
     disabled_wallets = serializers.SerializerMethodField()
     features = serializers.SerializerMethodField()
+    warning = serializers.CharField()
 
     class Meta:
         model = Chain
@@ -140,6 +141,7 @@ class Meta:
             "recommended_master_copy_version",
             "disabled_wallets",
             "features",
+            "warning",
         ]
 
     @staticmethod

src/chains/tests/test_views.py

@@ -80,6 +80,7 @@ def test_json_payload_format(self) -> None:
                     "recommendedMasterCopyVersion": chain.recommended_master_copy_version,
                     "disabledWallets": [],
                     "features": [],
+                    "warning": None,
                 }
             ],
         }
@@ -195,6 +196,7 @@ def test_json_payload_format(self) -> None:
             "recommendedMasterCopyVersion": chain.recommended_master_copy_version,
             "disabledWallets": [],
             "features": [],
+            "warning": None,
         }
 
         response = self.client.get(path=url, data=None, format="json")