Move remaining project metadata ownership to templates

app/Http/Requests/StoreProjectTicketBranchRequest.php

@@ -2,8 +2,10 @@
 
 namespace App\Http\Requests;
 
+use App\Models\Project;
 use Illuminate\Contracts\Validation\ValidationRule;
 use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
 
 class StoreProjectTicketBranchRequest extends FormRequest
 {
@@ -22,9 +24,21 @@ class StoreProjectTicketBranchRequest extends FormRequest
      */
     public function rules(): array
     {
+        /** @var Project $project */
+        $project = $this->route('project');
+        $projectTemplateId = $project->project_template_id;
+        $ownershipColumn = $projectTemplateId === null ? 'project_id' : 'project_template_id';
+        $ownershipValue = $projectTemplateId ?? $project->id;
+
         return [
             'branch_name' => ['required', 'string', 'max:255'],
-            'repository_connection_id' => ['required', 'integer', 'exists:repository_connections,id'],
+            'repository_connection_id' => [
+                'required',
+                'integer',
+                Rule::exists('repository_connections', 'id')->where(
+                    fn ($query) => $query->where($ownershipColumn, $ownershipValue),
+                ),
+            ],
         ];
     }
 }