fix: correct type issues

src/ContainerForm.php

@@ -2,7 +2,6 @@
 
 namespace WPDesk\Forms;
 
-use Psr\Container\ContainerInterface;
 use WPDesk\Persistence\PersistentContainer;
 
 /**
@@ -11,8 +10,12 @@ use WPDesk\Persistence\PersistentContainer;
  * @package WPDesk\Forms
  */
 interface ContainerForm {
-	/** @return void */
-	public function set_data( ContainerInterface $data );
+	/**
+	 * @param \Psr\Container\ContainerInterface $data
+	 *
+	 * @return void
+	 */
+	public function set_data( $data );
 
 	/**
 	 * Put data from form into a container.

src/Field/BasicField.php

@@ -200,11 +200,13 @@ abstract class BasicField implements Field {
 		return isset( $this->meta['class'][ $name ] );
 	}
 
-	public function get_default_value(): string {
+	/** @return mixed */
+	public function get_default_value() {
 		return $this->default_value;
 	}
 
-	public function set_default_value( string $value ): Field {
+	/** @param mixed $value */
+	public function set_default_value( $value ): Field {
 		$this->default_value = $value;
 
 		return $this;

src/Field/Traits/HtmlAttributes.php

@@ -2,8 +2,6 @@
 
 namespace WPDesk\Forms\Field\Traits;
 
-use WPDesk\Forms\Field;
-
 /**
  * Implementation of HTML attributes like id, name, action etc.
  *
@@ -54,6 +52,6 @@ trait HtmlAttributes {
 	}
 
 	public function get_attribute( string $name, string $default = null ): string {
-		return $this->attributes[ $name ] ?? $default;
+		return $this->attributes[ $name ] ?? $default ?? '';
 	}
 }

src/Form.php

@@ -42,7 +42,7 @@ interface Form {
 	 *
 	 * @return void
 	 */
-	public function set_data( array $data );
+	public function set_data( $data );
 
 	/**
 	 * Use to render the form to string.
@@ -69,6 +69,6 @@ interface Form {
 	/**
 	 * Form if you ever need to have more than one form at once.
 	 */
-	public function get_form_id(): int;
+	public function get_form_id(): string;
 }
 

src/Form/FormWithFields.php

@@ -113,7 +113,9 @@ class FormWithFields implements Form, ContainerForm, FieldProvider {
 	/**
 	 * Data could be saved in some place. Use this method to transmit them to form.
 	 *
-	 * @param array|ContainerInterface $data Data consistent with Form and ContainerForm interface.
+	 * @param array|ContainerInterface $data Data consistent with Form or ContainerForm interface.
+	 *
+	 * @return void
 	 */
 	public function set_data( $data ) {
 		if ( is_array( $data ) ) {
@@ -208,7 +210,7 @@ class FormWithFields implements Form, ContainerForm, FieldProvider {
 		return $fields;
 	}
 
-	public function get_form_id(): int {
+	public function get_form_id(): string {
 		return $this->form_id;
 	}