Added filters to the package (#14)

* Added filters to the package

* Updated the docs

README.md

@@ -18,8 +18,7 @@ composer require singlequote/laravel-datatables
 ```
 
 ## Whats new
-Yes, we live in a time where everything is automated. So in this version we introduce some very cool features.
-In this version the html and the script is created for you. Also this version is based on how laravel nova works.
+In this version we introduce a cool new feature. In this version you can use filters to add directly to your tableModel. Check it out [here](https://singlequote.github.io/Laravel-datatables/filters)
 
 ## Let's start
 We wanted our code as clean as possible and use the same code more than once.

docs/filters.md

@@ -0,0 +1,89 @@
+# Filters
+Filters can be used to filter your data. The filters can be used directly in your tableModel and filters the data server side. 
+
+<= [Go back](https://singlequote.github.io/Laravel-datatables/)
+-------------------------------------------------------------------
+
+## Basic example
+In this example we will use a drop-down to filter the users. Let's create a filter to filter deleted users.
+In your `tableModel` create a function named `filter`
+```php
+    use SingleQuote\DataTables\Filter\Dropdown;
+
+    /**
+     * Create filters
+     *
+     * @return array
+     */
+    public function filter() : array
+    {
+        $filter = [
+            [
+                'name' => "Without deleted", 
+                "id" => 1
+            ],[
+                'name' => "With deleted", 
+                "id" => 2
+            ]
+        ];
+
+        return [
+	        //the data attribute accepts an array as an object|collection
+            Dropdown::make('filter')->label("Filter deleted")->data($filter),
+        ];
+    }
+```
+The above will create a dropdown filter above your datatable.
+Now let's use the filter. Create a function named `query` in your `tableModel`
+You can call the method `$this->getFilter(...)` to retrieve your filters data.
+```php
+    public function query($query)
+    {
+        if ($this->getFilter('filter') && (int) $this->getFilter('filter') === 2) {
+            return $query->withTrashed(); //return with deleted users
+        }
+
+        return $query;
+    }
+```
+
+## Data attribute
+The data attribute is used to show the filters. As in the example you can pass an array or object to create your filter. By default the labels `name` and `id` are used to create the filter. See the options below.
+
+#### array | object
+Pass an array or object to create a filter.
+```php
+$filter = [
+    [
+        'name' => "Without deleted", 
+        "id" => 1
+    ],[
+        'name' => "With deleted", 
+        "id" => 2
+    ]
+];
+
+Dropdown::make('filter')->label("Filter deleted")->data($filter),
+```
+
+### Model | collections
+By default you the method uses the `id` as value and the `name` as label.
+```php
+$data = Status::all(); // {id : 1, name : 'invited', etc...}
+
+Dropdown::make('filter')->label("Filter by status")->data($data),
+```
+
+### Closure
+You can edit the `label` or `value` with an closure.
+
+```php
+$data = Status::all(); // {id : 1, name : 'invited', etc...}
+
+Dropdown::make('filter')->label("Filter by status")->data($data, function($status){
+	return [
+		'label' => $status->name,
+		'value' => $status->id
+	];
+}),
+```

docs/index.md

@@ -1,6 +1,7 @@
 # Docs
 * [Table models](https://singlequote.github.io/Laravel-datatables/table-models)
 * [Fields](https://singlequote.github.io/Laravel-datatables/fields)
+* [Filters](https://singlequote.github.io/Laravel-datatables/filters)
 * [Translations](https://singlequote.github.io/Laravel-datatables/translations)
 * [Middleware, permissions and roles](https://singlequote.github.io/Laravel-datatables/middleware)
 

src/Controllers/Filter.php

@@ -171,11 +171,11 @@ public function getMultiple() : bool
      */
     public function data($data, \Closure $closure = null)
     {
-        foreach($data as $key => $item){
+        foreach($data as $item){
             if(!$closure){
                 $this->data[] = [
-                    'value' => $item->id,
-                    'label' => $item->name
+                    'value' => is_array($item) ? $item['id'] : $item->id,
+                    'label' => is_array($item) ? $item['name'] : $item->name
                 ];
             }else{
                 $this->data[] = $closure($item);

src/Fields/Multiple.php

@@ -67,7 +67,6 @@ public static function make(string $column)
      */
     public function each(string $column, \Closure $closure)
     {
-        $this->emptyCheck = false;
         foreach($closure() as $field){
             $this->eachFields[] = [
                 "rendered" => $this->getBetweenTags($field->build(), 'script'),
@@ -138,4 +137,4 @@ public function implode(string $separate = ", ")
         return $this;
     }  
 
-}
+}