Docs updated to be synced with online documentation

src/docs/01_Getting_Started/00_Installation.md

@@ -21,4 +21,5 @@
 
 	```bash
 	$ php artisan admin:install
-	```
+	```
+ 5. All done! Now go to the `<your_site_url>/admin` and use default credentials `admin` / `SleepingOwl`.

src/docs/01_Getting_Started/05_Validation.md

@@ -1,13 +1,30 @@
-The easiest way to perform validation in you models is to extend `SleepingOwl\Models\SleepingOwlModel`. You must implement `getValidationRules()` method in your model, that must return validation rules, and thats all.
+There is two easy ways to perform validation in your models, you can combine them if you want. And there is one hard way. First of all you must extend your models from `SleepingOwl\Models\SleepingOwlModel`.
 
-The other way is to implement `SleepingOwl\Models\Interfaces\ValidationModelInterface` interface. It declares 2 methods: `validate($data)` and `getValidationRules()`. You must manually write validation there. If validation fails method must throw `SleepingOwl\Admin\Exceptions\ValidationException`.
+## Easy Ways
 
-### New Validation Rules
+### 1. In Form Elements
 
- - `url_stub` – check if field is valid url stub (without slashes)
- - `url_stub_full` – check if field is valid url stub (with slashes)
- - `required_only_on_create` – field required only on new entity creation, usefull for image field
+You can add validation rules to your form elements:
+
+```php
+FormItem::text('title')->required()->unique()->validationRule('my-custom-rule')
+```
+
+`required()` accepts one parameter: `true` if required only on create, `false` if always required. No parameter equals `false`.
+
+Use `unique()` to set this field to be unique in this model.
+
+You can use `validationRule($rule)` to add any rule you want. You can use pipe delimiter `|`.
 
-### Updated Validation Rules
+### 2. In Your Model
 
- - `unique` – same as laravel 'unique', but automatically exclude current entity from search. *(works only if your model extends `SleepingOwlModel`)*
+You can implement `public function getValidationRules()` method in your model, that must return validation rules, and thats all.
+
+## Hard Way
+
+The other way is to implement `SleepingOwl\Models\Interfaces\ValidationModelInterface` interface. It declares 2 methods: `validate($data)` and `getValidationRules()`. You must manually write validation there. If validation fails method must throw `SleepingOwl\Admin\Exceptions\ValidationException`.
+
+## New Validation Rules
+
+ - `url_stub` – check if field is valid url stub (without slashes)
+ - `url_stub_full` – check if field is valid url stub (with slashes)

src/docs/06_Columns/07_date.md

@@ -4,6 +4,8 @@ Cell content will be date or time value.
 Column::date('{field}')
 ```
 
+**Important**: you must have [intl](http://php.net/manual/en/book.intl.php) php extension installed to use this column.
+
 ### Format Date and Time
 
 ```php

src/docs/07_Form_Elements/00_Overview.md

@@ -19,6 +19,14 @@ Creates new form element and adds it to the current model configuration.
  - [textarea](textarea.html)
  - [ckeditor](ckeditor.html)
  - [view](view.html)
+
+### Validation
+
+```php
+FormItem::text('title')->required()->unique()->validationRule('my-custom-rule')
+```
+
+See [details](../Getting_Started/Validation.html) about validation.
 
 ### Register Custom Type
 

src/docs/07_Form_Elements/05_date.md

@@ -4,6 +4,9 @@ Creates date input.
 FormItem::date('date', 'Date')
 ```
 
+**Important**: you must have [intl](http://php.net/manual/en/book.intl.php) php extension installed to use this form element.
+
+
 ![](/img/date.png)
 
 ### Opened State

src/docs/07_Form_Elements/06_time.md

@@ -4,6 +4,8 @@ Creates time input.
 FormItem::time('time', 'Time')
 ```
 
+**Important**: you must have [intl](http://php.net/manual/en/book.intl.php) php extension installed to use this form element.
+
 ![](/img/time.png)
 
 ### Opened State

src/docs/07_Form_Elements/07_timestamp.md

@@ -4,6 +4,8 @@ Creates time input.
 FormItem::timestamp('timestamp', 'DateTime')
 ```
 
+**Important**: you must have [intl](http://php.net/manual/en/book.intl.php) php extension installed to use this form element.
+
 ![](/img/timestamp.png)
 
 ### Opened State

src/docs/07_Form_Elements/11_multiSelect.md

@@ -43,6 +43,7 @@ public function setCategoriesAttribute($categories)
 {
 	$this->categories()->detach();
 	if ( ! $categories) return;
+	if ( ! $this->exists) $this->save();
 
 	$this->categories()->attach($categories);
 }