feature -- validation rules

readme.md

@@ -9,7 +9,7 @@ Belongs To Many Field for simple manage Nested relation tree. Enables attaching
 
 ### RoadMap
 
-- [ ] Validation
+- [x] Validation
 - [x] Show selected categories on Detail
 - [ ] Ability to pass your own tree
 - [ ] Ability to `Delayed Loading` data when tree has many records ( example 10k+ ).
@@ -70,6 +70,9 @@ This field also respects policies: ie Role / Permission
 - RolePolicy: attachPermission($user, $role, $permission)
 - PermissionPolicy: viewAny($user)
 
+### Validation
+You can set min, max, size, required or custom rule objects
+`->rules('min:5', 'max:10', 'size:10', 'required', new CustomRule)`
 
 ### Contributing
 Feel free to suggest changes, ask for new features or fix bugs yourself.

resources/js/components/FormField.vue

@@ -17,9 +17,6 @@
             :normalizer="normalizer"
         />
       </div>
-      <help-text class="error-text mt-2 text-danger" v-if="hasErrors">
-        {{ firstError }}
-      </help-text>
     </template>
   </default-field>
 </template>
@@ -100,14 +97,6 @@ export default {
     {
       formData.append( this.field.attribute, JSON.stringify( this.selectedValues ) )
     },
-  },
-  computed:{
-    hasErrors: function() {
-      return this.errors.errors.hasOwnProperty(this.field.attribute);
-    },
-    firstError: function() {
-      return this.errors.errors[this.field.attribute][0]
-    }
   }
 }
 </script>

src/NestedTreeAttachManyField.php

@@ -2,12 +2,14 @@
 
 namespace PhoenixLib\NovaNestedTreeAttachMany;
 
+use Illuminate\Contracts\Validation\Rule;
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\App;
 use Laravel\Nova\Authorizable;
 use Laravel\Nova\Fields\Field;
 use Laravel\Nova\Fields\ResourceRelationshipGuesser;
 use PhoenixLib\NovaNestedTreeAttachMany\Domain\Relation\RelationHandlerFactory;
+use PhoenixLib\NovaNestedTreeAttachMany\Rules\ArrayRules;
 
 class NestedTreeAttachManyField extends Field
 {
@@ -21,8 +23,6 @@ class NestedTreeAttachManyField extends Field
 
     public $showOnIndex = false;
 
-    private $fireEvents = 0;
-
     public function __construct($name, $attribute = null, $resource = null)
     {
         parent::__construct($name, $attribute);
@@ -178,4 +178,13 @@ public function authorize(Request $request)
             && $request->newResource()->authorizedToAttachAny($request, $this->resourceClass::newModel())
             && parent::authorize($request);
     }
+
+    public function rules($rules)
+    {
+        $rules = ($rules instanceof Rule || is_string($rules)) ? func_get_args() : (array)$rules;
+
+        $this->rules = [ new ArrayRules($rules) ];
+
+        return $this;
+    }
 }

src/Rules/ArrayRules.php

@@ -0,0 +1,60 @@
+<?php
+namespace PhoenixLib\NovaNestedTreeAttachMany\Rules;
+
+use Illuminate\Contracts\Validation\Rule;
+
+class ArrayRules implements Rule
+{
+    public $rules = [];
+
+    private $message;
+
+    /**
+     * Create a new rule instance.
+     *
+     * @return void
+     */
+    public function __construct(array $rules)
+    {
+        $this->rules = $rules;
+    }
+
+    /**
+     * Determine if the validation rule passes.
+     *
+     * @param  string  $attribute
+     * @param  mixed  $value
+     * @return bool
+     */
+    public function passes($attribute, $value)
+    {
+        $input = [$attribute => json_decode($value, true)];
+
+        $this->rules = [$attribute => $this->rules];
+
+        $validator = \Validator::make($input, $this->rules, $this->messages($attribute));
+
+        $this->message = $validator->errors()->get($attribute);
+
+        return $validator->passes();
+    }
+
+    /**
+     * Get the validation error message.
+     *
+     * @return string
+     */
+    public function message()
+    {
+        return $this->message;
+    }
+
+    public function messages($attribute)
+    {
+        return [
+            "size" => __('Select exactly') . ' :size',
+            "min" => __('Select minimum of') . ' :min',
+            "max" => __('Select maximum of') . ' :max',
+        ];
+    }
+}