protect against nilpointer exceptions in dynamic parameter functions

SasSwart · SasSwart · commit c86701233536 · 2025-07-30T12:57:18.000Z
diff --git a/coderd/dynamicparameters/presets.go b/coderd/dynamicparameters/presets.go
@@ -9,6 +9,10 @@ import (
 // CheckPresets extracts the preset related diagnostics from a template version preset
 func CheckPresets(output *preview.Output, diags hcl.Diagnostics) *DiagnosticError {
 	de := presetValidationError(diags)
+	if output == nil {
+		return de
+	}
+
 	presets := output.Presets
 	for _, preset := range presets {
 		if hcl.Diagnostics(preset.Diagnostics).HasErrors() {
diff --git a/coderd/dynamicparameters/tags.go b/coderd/dynamicparameters/tags.go
@@ -11,6 +11,10 @@ import (
 
 func CheckTags(output *preview.Output, diags hcl.Diagnostics) *DiagnosticError {
 	de := tagValidationError(diags)
+	if output == nil {
+		return de
+	}
+
 	failedTags := output.WorkspaceTags.UnusableTags()
 	if len(failedTags) == 0 && !de.HasError() {
 		return nil // No errors, all is good!
