1. fix README.md的isEmpty的使用方式、删除重复信息

2. fix 内置的isEmpty、isCheckRequired的判断逻辑
3. add test case

README.md

@@ -41,6 +41,7 @@ validate 同时支持两种规则配置方式，对应了两种规则的收集
 ### 单字段多规则
 
 - `FieldValidation`: **每条规则中，只能有一个字段，但允许多个验证器。** (_规则配置类似于Laravel_)
+- `FieldValidation`: 不支持验证器`each`
 
 配置示例:
 
@@ -570,21 +571,12 @@ $v->validate();
 
 ```php
 ['users.*.id', 'each', 'required', 'isEmpty' => function($value) {
-    if ($value instanceof \Inhere\Validate\Exception\ArrayValueNotExists) {
-        return true;
-    }
-    // your code here ...
-}]
-```
-规则包含 .* 时的自定义验证,如: users.*.id
-```php
-['users.*.id', 'string', 'isEmpty' => function(array $value) {
+    // each value must be verified
     foreach ($value as $item) {
         if ($item instanceof \Inhere\Validate\Exception\ArrayValueNotExists) {
             return true;
-        }
-        // your code here ...
     }
+    // your code here ...
 }]
 ```
 

src/Traits/ScopedValidatorsTrait.php

@@ -663,11 +663,12 @@ public static function isCheckFile(string $name): bool
 
     /**
      * @param string $name
-     *
+     * @param array $args
      * @return bool
      */
-    public static function isCheckRequired(string $name): bool
+    public static function isCheckRequired(string $name, array $args = []): bool
     {
+        $name = $name === 'each' ? (strval($args[0] ?? '')) : $name;
         return 0 === strpos($name, 'required');
     }
 

src/ValidationTrait.php

@@ -316,7 +316,7 @@ protected function applyRule($fields, array $rule, array $onlyChecked, bool $sto
                 }
 
                 // required*系列字段检查 || 文件资源检查
-                if (self::isCheckRequired($validator) || self::isCheckFile($validator)) {
+                if (self::isCheckRequired($validator, $args) || self::isCheckFile($validator)) {
                     $result = $this->fieldValidate($field, $value, $validator, $args, $defMsg);
                     if (false === $result && $stopOnError) {
                         break;
@@ -375,6 +375,9 @@ protected function fieldValidate(string $field, $value, string $validator, array
         // other required* methods
         } elseif (method_exists($this, $validator)) {
             $passed = $this->$validator($field, $value, ...array_values($args));
+        } elseif (method_exists($this, $method = $validator . 'Validator')) {
+            $passed = $this->$method($value, ...$args);
+            // if $validator is a global custom validator {@see UserValidators::$validators}.
         } else {
             throw new InvalidArgumentException("The validator [$validator] is not exists!");
         }

src/Validators.php

@@ -125,6 +125,14 @@ public static function isEmpty($val): bool
     {
         if (is_string($val)) {
             $val = trim($val);
+        } elseif (is_array($val)) {
+            // each value must be verified
+            foreach ($val as $item) {
+                if (($item instanceof ArrayValueNotExists)) {
+                    $val = [];
+                    break;
+                }
+            }
         } elseif (is_object($val)) {
             if ($val instanceof ArrayValueNotExists) {
                 $val = '';

test/RuleValidationTest.php

@@ -770,7 +770,6 @@ public function testIssues21(): void
             ],
         ];
         $rs = [
-            ['users.*.id', 'required'], // will passed. values like: [ArrayValueNotExists, ArrayValueNotExists]
             ['users.*.id', 'each', 'required'],
         ];
 
@@ -790,6 +789,18 @@ public function testIssues21(): void
         $this->assertFalse($v->isOk());
         $this->assertSame('users.*.id each value must be through the "required" verify', $v->firstError());
 
+        $rs = [
+            ['users.*.id', 'required'], // will not pass.
+        ];
+
+        $v = RV::check($d1, $rs);
+        //parameter users.*.id is required!
+        $this->assertFalse($v->isOk());
+
+        $v = RV::check($d2, $rs);
+        //parameter users.*.id is required!
+        $this->assertFalse($v->isOk());
+
         $d3 = [
             'users' => [
                 ['id' => 1, 'name' => 'n1'],
@@ -803,4 +814,31 @@ public function testIssues21(): void
 
         $this->assertTrue($v->isOk());
     }
+
+    /**
+     * @link https://github.com/inhere/php-validate/issues/33
+     */
+    public function testIssues33(): void
+    {
+        $d = [
+            'users' => [
+                ['id' => 34, 'name' => 'tom'],
+                ['id' => 89],
+            ],
+        ];
+
+        $rs1 = [
+            ['users.*.name', 'each', 'required'],
+            ['users.*.name', 'each', 'string']
+        ];
+        $v2 = RuleValidation::check($d, $rs1);
+
+        $this->assertTrue($v2->isFail());
+
+        $rs2[] = ['users.*.name', 'each', 'string'];
+
+        $v1 = RuleValidation::check($d, $rs2);
+        $this->assertFalse($v1->isFail());
+        $this->assertTrue($v1->isOk());
+    }
 }