Handle input validation in abstract Form class

1 files changed, 32 insertions, 0 deletions

diff --git a/includes/form/SignInForm.php b/includes/form/SignInForm.php
new file mode 100644
index 0000000..3735029
--- /dev/null
+++ b/includes/form/SignInForm.php
@@ -0,0 +1,32 @@
+<?php
+
+include_once './includes/form/Form.php';
+
+class SignInForm extends Form
+{
+	public function validate_username($username): ?string
+	{
+		$result = null;
+
+		if (empty($username)) {
+			$this->report_error('Please provide a username.');
+		} else {
+			$result = filter_var($username, FILTER_SANITIZE_STRING);
+		}
+
+		return $result;
+	}
+
+	public function validate_password($password): ?string
+	{
+		$result = null;
+
+		if (empty($password)) {
+			$this->report_error('Please provide a password.');
+		} else {
+			$result = filter_var($password, FILTER_SANITIZE_STRING);
+		}
+
+		return $result;
+	}
+}
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