Added field alias feature

Author: devwithkunal

Diff for: README.md

@@ -45,7 +45,7 @@ $v->field('password')->required()->min_len(8)->max_len(16)->must_contain('@#$&')
 $v->field('confirm_password')->required()->equals($data['password']);
 $v->field('sex')->enum(['male', 'female', 'others']);
 $v->field('phone')->numeric()->min_len(10)->max_len(10);
-$v->field('dob')->date()->date_after('1998-01-01')->date_before('2002-12-31');
+$v->field('dob', 'date of birth')->date()->date_after('1998-01-01')->date_before('2002-12-31');
 ```
 Make sure to run the field method on start of every method chain.
 
@@ -65,8 +65,9 @@ if(!$v->is_valid()){
 Some methods to use
 | Methods | Return | Description |
 |--------|--------|-------------|
+| `field(str $name, str? $alias)` | $this | Set the field name to start validation. <br/> param *string* `$name` - Name of the field/key as on data to validate. <br/> param *string* `$alias` - (optional) Alias use on error messages instead of field name. |
 | `set_response_messages(arr $messages)` | void | Function to set/extend custom error. <br /> Use associative array of messages as the parameter. See the messages format on `Validator.php` file at line `20`.
-| is_valid() | boolean | Check if all validations are successfull.
+| `is_valid()` | boolean | Check if all validations are successfull.
 
 Here is a list of the validators currently available.
 

Diff for: Validator.php

@@ -12,6 +12,11 @@ class Validator{
      */
     private $current_field;
 
+    /**
+     * @var string $current_alias - Alias use on error messages instead of field name.
+     */
+    private $current_alias;
+
     /**
      * @var array $response_messages - Error messages to show user.
      * 
@@ -22,7 +27,7 @@ class Validator{
         "alpha" => "{field} must contains alphabatic charectors only.",
         "alpha_num" => "{field} must contains alphabatic charectors & numbers only.",
         "numeric" => "{field} must contains numbers only.",
-        "email" => "Invalid email address",
+        "email" => "{field} is invalid.",
         "max_len" => "{field} is too long.",
         "min_len" => "{field} is too short.",
         "max_val" => "{field} is too high.",
@@ -31,7 +36,7 @@ class Validator{
         "equals" => "{field} does not match.",
         "must_contain" => "{field} must contains {chars}.",
         "match" => "{field} is invalid.",
-        "date" => "Date is invalid.",
+        "date" => "{field} is invalid.",
         "date_after" => "{field} date is not valid.",
         "date_before" => "{field} date is not valid.",
     ];
@@ -63,7 +68,8 @@ function __construct($data){
      * @return void
      */
     private function add_error_message($type, $others = []){
-        $msg = str_replace('{field}', ucfirst($this->current_field), $this->response_messages[$type]);
+        $field_name = $this->current_alias ? ucfirst($this->current_alias) : ucfirst($this->current_field);
+        $msg = str_replace('{field}', $field_name, $this->response_messages[$type]);
         foreach($others as $key => $val){
             $msg = str_replace('{'.$key.'}', $val, $msg);
         }
@@ -98,11 +104,13 @@ function set_response_messages($messages){
      * field - Set the field name to start validation.
      * 
      * @param string $name - Name of the field/key as on data to validate.
+     * @param string $alias - (optional) Alias use on error messages instead of field name.
      * @return this
      */
-    function field($name){
+    function field($name, $alias = null){
         $this->current_field = $name;
         $this->next = true;
+        $this->current_alias = $alias;
         return $this;
     }
 

Diff for: index.php

@@ -27,7 +27,7 @@
 $v->field('confirm_password')->required()->equals($data['password']);
 $v->field('sex')->enum(['male', 'female', 'others']);
 $v->field('phone')->numeric()->min_len(10)->max_len(10);
-$v->field('dob')->date()->date_after('1998-01-01')->date_before('2002-12-31');
+$v->field('dob', 'date of birth')->date()->date_after('1998-01-01')->date_before('2002-12-31');
 
 // Check if data is valid
 if(!$v->is_valid()){