Accelerate finances.Subsidy admin

scipost_django/finances/admin.py

@@ -19,11 +19,15 @@ from .models import (
 
 class SubsidyPaymentInline(admin.TabularInline):
     model = SubsidyPayment
-
+    autocomplete_fields = [
+        "invoice",
+        "proof_of_payment",
+    ]
+    extra = 0
 
 class SubsidyAttachmentInline(admin.TabularInline):
     model = SubsidyAttachment
-
+    extra = 0
 
 @admin.register(Subsidy)
 class SubsidyAdmin(admin.ModelAdmin):

scipost_django/finances/models/pex_coverage.py

@@ -40,5 +40,5 @@ class PublicationExpenditureCoverage(models.Model):
     def __str__(self):
         return (
             f"€{self.amount} for {self.publication.doi_label} "
-            "from {self.subsidy.organization}"
+            f"from {self.subsidy.organization}"
         )