Use string values in DateFilter null-management constants

Author: teohhanhui

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+## 1.0.0 beta 4
+
+* Use string values for `Dunglas\ApiBundle\Doctrine\Orm\Filter\DateFilter` null-management constants
+
 ## 1.0.0 beta 3
 
 * The Hydra documentation URL is now `/apidoc` (was `/vocab`)

Doctrine/Orm/Filter/DateFilter.php

@@ -26,9 +26,9 @@ class DateFilter extends AbstractFilter
 {
     const PARAMETER_BEFORE = 'before';
     const PARAMETER_AFTER = 'after';
-    const EXCLUDE_NULL = 0;
-    const INCLUDE_NULL_BEFORE = 1;
-    const INCLUDE_NULL_AFTER = 2;
+    const EXCLUDE_NULL = 'exclude_null';
+    const INCLUDE_NULL_BEFORE = 'include_null_before';
+    const INCLUDE_NULL_AFTER = 'include_null_after';
 
     /**
      * @var array

Resources/doc/filters.md

@@ -91,7 +91,7 @@ As others filters, the date filter must be explicitly enabled:
 # app/config/services.yml
 
 services:
-    # Enable date filter for for the property "dateProperty" of the resource "resource.offer"
+    # Enable date filter for the property "dateProperty" of the resource "resource.offer"
     resource.date_filter:
         parent:    "api.doctrine.orm.date_filter"
         arguments: [ { "dateProperty": ~ } ]
@@ -110,12 +110,12 @@ services:
 The date filter is able to deal with date properties having `null` values.
 Four behaviors are available at the property level of the filter:
 
-| Description                          | Strategy to set                                                               |
-|--------------------------------------|-------------------------------------------------------------------------------|
-| Use the default behavior of the DBMS | `null`                                                                        |
-| Exclude items                        | `Dunglas\ApiBundle\Doctrine\Orm\Filter\DateFilter::EXCLUDE_NULL` (`0`)        |
-| Consider items as oldest             | `Dunglas\ApiBundle\Doctrine\Orm\Filter\DateFilter::INCLUDE_NULL_BEFORE` (`1`) |
-| Consider items as youngest           | `Dunglas\ApiBundle\Doctrine\Orm\Filter\DateFilter::INCLUDE_NULL_AFTER` (`2`)  |
+| Description                          | Strategy to set                                                                                 |
+|--------------------------------------|-------------------------------------------------------------------------------------------------|
+| Use the default behavior of the DBMS | `null`                                                                                          |
+| Exclude items                        | `Dunglas\ApiBundle\Doctrine\Orm\Filter\DateFilter::EXCLUDE_NULL` (`exclude_null`)               |
+| Consider items as oldest             | `Dunglas\ApiBundle\Doctrine\Orm\Filter\DateFilter::INCLUDE_NULL_BEFORE` (`include_null_before`) |
+| Consider items as youngest           | `Dunglas\ApiBundle\Doctrine\Orm\Filter\DateFilter::INCLUDE_NULL_AFTER` (`include_null_after`)   |
 
 For instance, exclude entries with a property value of `null`, with the following service definition:
 
@@ -126,7 +126,7 @@ For instance, exclude entries with a property value of `null`, with the followin
 services:
     resource.date_filter:
         parent:    "api.doctrine.orm.date_filter"
-        arguments: [ { "dateProperty": ~ } ]
+        arguments: [ { "dateProperty": exclude_null } ]
 
     resource.offer:
         parent:    "api.resource"