Update docs for allowing empty input

README.md

@@ -244,10 +244,11 @@ This would create `app/ModelFilters/AdminFilters/UserFilter.php`
 ### Defining The Filter Logic
 Define the filter logic based on the camel cased input key passed to the `filter()` method.
 
-- Empty strings and null values are ignored
+- Empty strings and null values are ignored by default.
+  - Empty strings and values can be configured not to be ignored by setting `protected $allowedEmptyFilters = false;` on a filter.
 - If a `setup()` method is defined it will be called once before any filter methods regardless of input
 - `_id` is dropped from the end of the input key to define the method so filtering `user_id` would use the `user()` method
-    - (can be changed with by definining `protected $drop_id = false;` on a filter)
+    - Can be changed with by definining `protected $drop_id = false;` on a filter
 - Input without a corresponding filter method are ignored
 - The value of the key is injected into the method
 - All values are accessible through the `$this->input()` method or a single value by key `$this->input($key)`
@@ -692,7 +693,7 @@ OR:
 }
 ```
 
-In your view `$users->render()` will return pagination links as it normally would but with the original query string with empty input ignored.
+In your view `$users->render()` will return pagination links as it normally would but with the original query string with empty input ignored if `protected $allowedEmptyFilters` is not set to `false` on the filter.
 
 
 # Contributing

src/ModelFilter.php

@@ -44,7 +44,7 @@ abstract class ModelFilter
     /**
      * Filter out empty input so filter methods won't be called with empty values (strings, arrays, null).
      *
-     * @var array
+     * @var bool
      */
     protected $allowedEmptyFilters = false;