Add method to view to allow adding request headers

src/View.php

@@ -85,6 +85,19 @@ abstract class View
 		return $this->getOutput();
 	}
 
+	/**
+	 * Add an http header
+	 *
+	 * @param string $name
+	 * @param string|string[] $value
+	 * @return ViewInterface
+	 */
+	public function addHeader(string $name, $value): ViewInterface
+	{
+		$this->response = $this->response->withHeader($name, $value);
+		return $this;
+	}
+
 	/**
 	 * Set the output string
 	 *

src/ViewInterface.php

@@ -37,7 +37,7 @@ interface ViewInterface {
 	 * @param mixed $string
 	 * @return ViewInterface
 	 */
-	public function setOutput($string): ViewInterface;
+	public function setOutput($string): self;
 
 	/**
 	 * Append additional output.
@@ -45,7 +45,7 @@ interface ViewInterface {
 	 * @param string $string
 	 * @return ViewInterface
 	 */
-	public function appendOutput(string $string): ViewInterface;
+	public function appendOutput(string $string): self;
 
 	/**
 	 * Get the current output as a string. Does not

tests/View/HttpViewTest.php

@@ -63,6 +63,13 @@ class HttpViewTest extends Ion_TestCase {
 		$this->assertEquals(404, $view->response->getStatusCode());
 	}
 
+	public function testAddHeader()
+	{
+		$view = $this->view->addHeader('foo', 'bar');
+		$this->assertTrue($view->response->hasHeader('foo'));
+		$this->assertEquals(['bar'], $view->response->getHeader('foo'));
+	}
+
 	public function testSendDoubleRenderException()
 	{
 		$this->expectException(DoubleRenderException::class);