docs: add max_length to sample code

It is good practice to check max length.

Author: kenjis

user_guide_src/source/libraries/validation/002.php

@@ -3,10 +3,10 @@
 // ...
 
 $rules = [
-    'username' => 'required',
-    'password' => 'required|min_length[10]',
-    'passconf' => 'required|matches[password]',
-    'email'    => 'required|valid_email',
+    'username' => 'required|max_length[30]',
+    'password' => 'required|max_length[255]|min_length[10]',
+    'passconf' => 'required|max_length[255]|matches[password]',
+    'email'    => 'required|max_length[254]|valid_email',
 ];
 
 // ...

user_guide_src/source/libraries/validation/005.php

@@ -1,4 +1,4 @@
 <?php
 
-$validation->setRule('username', 'Username', 'required|min_length[3]');
-$validation->setRule('password', 'Password', ['required', 'min_length[8]', 'alpha_numeric_punct']);
+$validation->setRule('username', 'Username', 'required|max_length[30]|min_length[3]');
+$validation->setRule('password', 'Password', ['required', 'max_length[255]', 'min_length[8]', 'alpha_numeric_punct']);

user_guide_src/source/libraries/validation/006.php

@@ -1,11 +1,11 @@
 <?php
 
 $validation->setRules([
-    'username' => 'required',
-    'password' => 'required|min_length[10]',
+    'username' => 'required|max_length[30]',
+    'password' => 'required|max_length[255]|min_length[10]',
 ]);
 // or
 $validation->setRules([
-    'username' => 'required',
-    'password' => ['required', 'min_length[10]'],
+    'username' => ['required', 'max_length[30]'],
+    'password' => ['required', 'max_length[255]', 'min_length[10]'],
 ]);

user_guide_src/source/libraries/validation/007.php

@@ -1,11 +1,11 @@
 <?php
 
 $validation->setRules([
-    'username' => ['label' => 'Username', 'rules' => 'required'],
-    'password' => ['label' => 'Password', 'rules' => 'required|min_length[10]'],
+    'username' => ['label' => 'Username', 'rules' => 'required|max_length[30]'],
+    'password' => ['label' => 'Password', 'rules' => 'required|max_length[255]|min_length[10]'],
 ]);
 // or
 $validation->setRules([
-    'username' => ['label' => 'Username', 'rules' => 'required'],
-    'password' => ['label' => 'Password', 'rules' => ['required', 'min_length[10]']],
+    'username' => ['label' => 'Username', 'rules' => 'required|max_length[30]'],
+    'password' => ['label' => 'Password', 'rules' => ['required', '|max_length[255]', 'min_length[10]']],
 ]);

user_guide_src/source/libraries/validation/009.php

@@ -19,10 +19,10 @@
 
 // Joe Smith
 $validation->setRules([
-    'contacts.name' => 'required',
+    'contacts.name' => 'required|max_length[60]',
 ]);
 
 // Fred Flintsone & Wilma
 $validation->setRules([
-    'contacts.friends.name' => 'required',
+    'contacts.friends.name' => 'required|max_length[60]',
 ]);

user_guide_src/source/libraries/validation/010.php

@@ -2,5 +2,5 @@
 
 // Fred Flintsone & Wilma
 $validation->setRules([
-    'contacts.*.name' => 'required',
+    'contacts.*.name' => 'required|max_length[60]',
 ]);

user_guide_src/source/libraries/validation/011.php

@@ -13,5 +13,5 @@
 
 // Rule
 $validation->setRules([
-    'user_ids.*' => 'required',
+    'user_ids.*' => 'required|max_length[19]',
 ]);

user_guide_src/source/libraries/validation/013.php

@@ -5,10 +5,10 @@
 class Validation
 {
     public $signup = [
-        'username'     => 'required',
-        'password'     => 'required',
-        'pass_confirm' => 'required|matches[password]',
-        'email'        => 'required|valid_email',
+        'username'     => 'required|max_length[30]',
+        'password'     => 'required|max_length[255]',
+        'pass_confirm' => 'required|max_length[255]|matches[password]',
+        'email'        => 'required|max_length[254]|valid_email',
     ];
 
     // ...

user_guide_src/source/libraries/validation/015.php

@@ -5,10 +5,10 @@
 class Validation
 {
     public $signup = [
-        'username'     => 'required',
-        'password'     => 'required',
-        'pass_confirm' => 'required|matches[password]',
-        'email'        => 'required|valid_email',
+        'username'     => 'required|max_length[30]',
+        'password'     => 'required|max_length[255]',
+        'pass_confirm' => 'required|max_length[255]|matches[password]',
+        'email'        => 'required|max_length[254]|valid_email',
     ];
 
     public $signup_errors = [

user_guide_src/source/libraries/validation/016.php

@@ -6,13 +6,13 @@ class Validation
 {
     public $signup = [
         'username' => [
-            'rules'  => 'required',
+            'rules'  => 'required|max_length[30]',
             'errors' => [
                 'required' => 'You must choose a Username.',
             ],
         ],
         'email' => [
-            'rules'  => 'required|valid_email',
+            'rules'  => 'required|max_length[254]|valid_email',
             'errors' => [
                 'valid_email' => 'Please check the Email field. It does not appear to be valid.',
             ],