handle validation strings

Author: duncanmcclean

src/Forms/Fields/Email.php

@@ -27,7 +27,7 @@ public function toFieldArray(): array
             'type' => 'text',
             'input_type' => 'email',
             'placeholder' => $this->config('placeholder'),
-            'validate' => [...$this->config('validate', []), 'email'],
+            'validate' => [...((array) $this->config('validate', [])), 'email'],
             ...Arr::except($this->config(), ['type', 'input_type', 'placeholder', 'validate']),
         ];
     }

src/Forms/Form.php

@@ -99,14 +99,14 @@ private function convertFieldsFromBlueprint(\Statamic\Fields\Blueprint $blueprin
                 return [
                     ...$section,
                     'fields' => collect($section['fields'] ?? [])->map(function (array $field): array {
-                        if (
-                            Arr::get($field, 'field.type') === 'text'
-                            && in_array('email', Arr::get($field, 'field.validate') ?? [])
-                        ) {
+                        $validate = Arr::get($field, 'field.validate');
+                        $validateRules = is_string($validate) ? explode('|', $validate) : ($validate ?? []);
+
+                        if (Arr::get($field, 'field.type') === 'text' && in_array('email', $validateRules)) {
                             Arr::set($field, 'field.type', 'email');
                             Arr::pull($field, 'field.input_type');
 
-                            $remainingValidationRules = collect(Arr::get($field, 'field.validate'))
+                            $remainingValidationRules = collect($validateRules)
                                 ->reject(fn (string $validate): bool => $validate === 'email');
 
                             if ($remainingValidationRules->isEmpty()) {