Add support for "first" & "last" fields for PageArray types.

Author: dadish

src/Field/PageArray/PageArrayFirstField.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace ProcessWire\GraphQL\Field\PageArray;
+
+use Youshido\GraphQL\Field\AbstractField;
+use Youshido\GraphQL\Execution\ResolveInfo;
+use ProcessWire\GraphQL\Type\InterfaceType\PageInterfaceType;
+
+class PageArrayFirstField extends AbstractField {
+
+  public function getName()
+  {
+    return 'first';
+  }
+
+  public function getType()
+  {
+    return new PageInterfaceType();
+  }
+
+  public function resolve($value, array $args, ResolveInfo $info)
+  {
+    return $value->first();
+  }
+
+}

src/Field/PageArray/PageArrayLastField.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace ProcessWire\GraphQL\Field\PageArray;
+
+use Youshido\GraphQL\Field\AbstractField;
+use Youshido\GraphQL\Execution\ResolveInfo;
+use ProcessWire\GraphQL\Type\InterfaceType\PageInterfaceType;
+
+class PageArrayLastField extends AbstractField {
+
+  public function getName()
+  {
+    return 'last';
+  }
+
+  public function getType()
+  {
+    return new PageInterfaceType();
+  }
+
+  public function resolve($value, array $args, ResolveInfo $info)
+  {
+    return $value->last();
+  }
+
+}

src/Field/TemplatedPageArray/TemplatedPageArrayFirstField.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace ProcessWire\GraphQL\Field\TemplatedPageArray;
+
+use Youshido\GraphQL\Type\ListType\ListType;
+use ProcessWire\Template;
+use ProcessWire\GraphQL\Field\PageArray\PageArrayFirstField;
+use ProcessWire\GraphQL\Type\Object\TemplatedPageType;
+
+class TemplatedPageArrayFirstField extends PageArrayFirstField {
+
+  protected $template;
+
+  public function __construct(Template $template)
+  {
+    $this->template = $template;
+    parent::__construct([]);
+  }
+
+  public function getType()
+  {
+    return new TemplatedPageType($this->template);
+  }
+
+}

src/Field/TemplatedPageArray/TemplatedPageArrayLastField.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace ProcessWire\GraphQL\Field\TemplatedPageArray;
+
+use Youshido\GraphQL\Type\ListType\ListType;
+use ProcessWire\Template;
+use ProcessWire\GraphQL\Field\PageArray\PageArrayLastField;
+use ProcessWire\GraphQL\Type\Object\TemplatedPageType;
+
+class TemplatedPageArrayLastField extends PageArrayLastField {
+
+  protected $template;
+
+  public function __construct(Template $template)
+  {
+    $this->template = $template;
+    parent::__construct([]);
+  }
+
+  public function getType()
+  {
+    return new TemplatedPageType($this->template);
+  }
+
+}

src/Type/Object/PageArrayType.php

@@ -5,8 +5,9 @@
 use Youshido\GraphQL\Type\Object\AbstractObjectType;
 use ProcessWire\GraphQL\Type\Object\WireArrayType;
 use ProcessWire\GraphQL\Field\PageArray\PageArrayListField;
+use ProcessWire\GraphQL\Field\PageArray\PageArrayFirstField;
+use ProcessWire\GraphQL\Field\PageArray\PageArrayLastField;
 use ProcessWire\GraphQL\Field\PageArray\PageArrayFindField;
-use ProcessWire\GraphQL\Field\PageArray\PageArrayCountField;
 use ProcessWire\GraphQL\Type\InterfaceType\PaginatedArrayInterfaceType;
 
 class PageArrayType extends AbstractObjectType {
@@ -26,6 +27,8 @@ public function build($config)
     $config->applyInterface(new PaginatedArrayInterfaceType());
     $config->addField(new PageArrayListField());
     $config->addField(new PageArrayFindField());
+    $config->addField(new PageArrayFirstField());
+    $config->addField(new PageArrayLastField());
   }
 
   public function getInterfaces()

src/Type/Object/TemplatedPageArrayType.php

@@ -6,6 +6,8 @@
 use ProcessWire\GraphQL\Type\Object\PageArrayType;
 use ProcessWire\GraphQL\Field\TemplatedPageArray\TemplatedPageArrayFindField;
 use ProcessWire\GraphQL\Field\TemplatedPageArray\TemplatedPageArrayListField;
+use ProcessWire\GraphQL\Field\TemplatedPageArray\TemplatedPageArrayFirstField;
+use ProcessWire\GraphQL\Field\TemplatedPageArray\TemplatedPageArrayLastField;
 
 class TemplatedPageArrayType extends PageArrayType {
 
@@ -39,6 +41,8 @@ public function build($config)
     parent::build($config);
     $config->addField(new TemplatedPageArrayFindField($this->template));
     $config->addField(new TemplatedPageArrayListField($this->template));
+    $config->addField(new TemplatedPageArrayFirstField($this->template));
+    $config->addField(new TemplatedPageArrayLastField($this->template));
   }
 
 }

test/Field/Page/PageArrayFirstField/PageArrayFirstFieldTest.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace ProcessWire\GraphQL\Test\Field\Page\Fieldtype;
+
+use \ProcessWire\GraphQL\Utils;
+use \ProcessWire\GraphQL\Test\GraphQLTestCase;
+use \ProcessWire\GraphQL\Test\Field\Page\Traits\AccessTrait;
+
+class PageArrayFirstFieldTest extends GraphQLTestCase {
+
+  const accessRules = [
+    'legalTemplates' => ['city'],
+    'legalFields' => ['title'],
+  ];
+
+  use AccessTrait;
+	
+  public function testValue()
+  {
+  	$firstCity = Utils::pages()->find("template=city")->first();
+  	$query = "{
+  		city {
+  			first {
+          name
+          id
+          title
+  			}
+  		}
+  	}";
+  	$res = $this->execute($query);
+    $this->assertEquals($firstCity->name, $res->data->city->first->name, 'Retrieves correct name of the first page.');
+    $this->assertEquals($firstCity->id, $res->data->city->first->id, 'Retrieves correct id of the first page.');
+  	$this->assertEquals($firstCity->title, $res->data->city->first->title, 'Retrieves correct title of the first page.');
+  }
+
+}

test/Field/Page/PageArrayLastField/PageArrayLastFieldTest.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace ProcessWire\GraphQL\Test\Field\Page\Fieldtype;
+
+use \ProcessWire\GraphQL\Utils;
+use \ProcessWire\GraphQL\Test\GraphQLTestCase;
+use \ProcessWire\GraphQL\Test\Field\Page\Traits\AccessTrait;
+
+class PageArrayLastFieldTest extends GraphQLTestCase {
+
+  const accessRules = [
+    'legalTemplates' => ['city'],
+    'legalFields' => ['title'],
+  ];
+
+  use AccessTrait;
+	
+  public function testValue()
+  {
+  	$lastCity = Utils::pages()->find("template=city, limit=50")->last();
+  	$query = "{
+  		city {
+  			last {
+          name
+          id
+          title
+  			}
+  		}
+  	}";
+  	$res = $this->execute($query);
+    $this->assertEquals($lastCity->name, $res->data->city->last->name, 'Retrieves correct name of the last page.');
+    $this->assertEquals($lastCity->id, $res->data->city->last->id, 'Retrieves correct id of the last page.');
+  	$this->assertEquals($lastCity->title, $res->data->city->last->title, 'Retrieves correct title of the last page.');
+  }
+
+}