Relationship with no "data" member. Fixed #92 (#93)

Author: f3ath

.travis.yml

@@ -1,6 +1,8 @@
 language: php
 php:
   - '7.1'
+  - '7.2'
+  - '7.3'
 
 before_script:
   - composer install

CHANGELOG.md

@@ -6,6 +6,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+## [2.1.0] - 2019-02-25
+### Fixed
+- Relationship without data property (#92)
+
 ## [2.0.1] - 2018-12-31
 ### Changed
 - Downgraded min required php version to 7.1
@@ -14,5 +18,6 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Added
 - v2 initial release
 
-[Unreleased]: https://github.com/json-api-php/json-api/compare/2.0.1...HEAD
+[Unreleased]: https://github.com/json-api-php/json-api/compare/2.1.0...HEAD
+[2.1.0]: https://github.com/json-api-php/json-api/compare/2.0.1...2.1.0
 [2.0.1]: https://github.com/json-api-php/json-api/compare/2.0.0...2.0.1

phpunit.xml.dist

@@ -3,8 +3,7 @@
         bootstrap="vendor/autoload.php"
         stopOnFailure="false"
         verbose="true"
-        colors="true"
-        syntaxCheck="true">
+        colors="true">
     <testsuites>
         <testsuite name="Main">
             <directory>./test</directory>

src/EmptyRelationship.php

@@ -0,0 +1,31 @@
+<?php declare(strict_types=1);
+
+namespace JsonApiPhp\JsonApi;
+
+use JsonApiPhp\JsonApi\Internal\RelationshipMember;
+use JsonApiPhp\JsonApi\Internal\ResourceField;
+use JsonApiPhp\JsonApi\Internal\ResourceFieldTrait;
+
+/**
+ * A relationship with no data
+ */
+class EmptyRelationship implements ResourceField
+{
+    use ResourceFieldTrait;
+
+    private $obj;
+
+    public function __construct(string $name, RelationshipMember $member, RelationshipMember ...$members)
+    {
+        $this->name = $name;
+        $this->obj = combine($member, ...$members);
+    }
+
+    /**
+     * @param object $o
+     */
+    public function attachTo($o): void
+    {
+        child($o, 'relationships')->{$this->name} = $this->obj;
+    }
+}

src/Error/SourceParameter.php

@@ -2,8 +2,8 @@
 
 namespace JsonApiPhp\JsonApi\Error;
 
-use JsonApiPhp\JsonApi\Internal\ErrorMember;
 use function JsonApiPhp\JsonApi\child;
+use JsonApiPhp\JsonApi\Internal\ErrorMember;
 
 final class SourceParameter implements ErrorMember
 {

src/Error/SourcePointer.php

@@ -2,8 +2,8 @@
 
 namespace JsonApiPhp\JsonApi\Error;
 
-use JsonApiPhp\JsonApi\Internal\ErrorMember;
 use function JsonApiPhp\JsonApi\child;
+use JsonApiPhp\JsonApi\Internal\ErrorMember;
 
 final class SourcePointer implements ErrorMember
 {

src/Internal/RelationshipMember.php

@@ -0,0 +1,10 @@
+<?php declare(strict_types=1);
+
+namespace JsonApiPhp\JsonApi\Internal;
+
+/**
+ * @internal
+ */
+interface RelationshipMember extends ToOneMember, ToManyMember
+{
+}

src/Internal/ToManyMember.php

@@ -2,6 +2,9 @@
 
 namespace JsonApiPhp\JsonApi\Internal;
 
-interface ToManyMember extends ToOneMember
+/**
+ * @internal
+ */
+interface ToManyMember extends Attachable
 {
 }

src/Link/AboutLink.php

@@ -2,9 +2,9 @@
 
 namespace JsonApiPhp\JsonApi\Link;
 
+use function JsonApiPhp\JsonApi\child;
 use JsonApiPhp\JsonApi\Internal\ErrorMember;
 use JsonApiPhp\JsonApi\Internal\LinkTrait;
-use function JsonApiPhp\JsonApi\child;
 
 final class AboutLink implements ErrorMember
 {

src/Link/FirstLink.php

@@ -2,9 +2,9 @@
 
 namespace JsonApiPhp\JsonApi\Link;
 
+use function JsonApiPhp\JsonApi\child;
 use JsonApiPhp\JsonApi\Internal\LinkTrait;
 use JsonApiPhp\JsonApi\Internal\PaginationLink;
-use function JsonApiPhp\JsonApi\child;
 
 final class FirstLink implements PaginationLink
 {