Allow ITU message format in validator messages

fixes #991

framework/yii/i18n/I18N.php

@@ -63,6 +63,9 @@ class I18N extends Component
 	/**
 	 * Translates a message to the specified language.
 	 *
+	 * After translation the message will be parsed using [[MessageFormatter]] if it contains
+	 * ITU message format and `$params` are not empty.
+	 *
 	 * @param string $category the message category.
 	 * @param string $message the message to be translated.
 	 * @param array $params the parameters that will be used to replace the corresponding placeholders in the message.
@@ -101,6 +104,44 @@ class I18N extends Component
 		return strtr($message, $p);
 	}
 
+	/**
+	 * Formats a message using using [[MessageFormatter]].
+	 *
+	 * @param string $message the message to be formatted.
+	 * @param array $params the parameters that will be used to replace the corresponding placeholders in the message.
+	 * @param string $language the language code (e.g. `en_US`, `en`).
+	 * @return string the formatted message.
+	 */
+	public function format($message, $params, $language)
+	{
+		$params = (array)$params;
+		if ($params === []) {
+			return $message;
+		}
+
+		if (preg_match('~{\s*[\d\w]+\s*,~u', $message)) {
+			$formatter = new MessageFormatter($language, $message);
+			if ($formatter === null) {
+				Yii::warning("Message for $language is invalid: $message.");
+				return $message;
+			}
+			$result = $formatter->format($params);
+			if ($result === false) {
+				$errorMessage = $formatter->getErrorMessage();
+				Yii::warning("Formatting message for $language failed with error: $errorMessage. Message is: $message.");
+				return $message;
+			} else {
+				return $result;
+			}
+		}
+
+		$p = [];
+		foreach($params as $name => $value) {
+			$p['{' . $name . '}'] = $value;
+		}
+		return strtr($message, $p);
+	}
+
 	/**
 	 * Returns the message source for the given category.
 	 * @param string $category the category name.

framework/yii/validators/BooleanValidator.php

@@ -58,8 +58,8 @@ class BooleanValidator extends Validator
 		$value = $object->$attribute;
 		if (!$this->validateValue($value)) {
 			$this->addError($object, $attribute, $this->message, [
-				'{true}' => $this->trueValue,
+				'true' => $this->trueValue,
-				'{false}' => $this->falseValue,
+				'false' => $this->falseValue,
 			]);
 		}
 	}

framework/yii/validators/CompareValidator.php

@@ -143,8 +143,8 @@ class CompareValidator extends Validator
 		}
 		if (!$valid) {
 			$this->addError($object, $attribute, $this->message, [
-				'{compareAttribute}' => $compareLabel,
+				'compareAttribute' => $compareLabel,
-				'{compareValue}' => $compareValue,
+				'compareValue' => $compareValue,
 			]);
 		}
 	}

framework/yii/validators/FileValidator.php

@@ -144,7 +144,7 @@ class FileValidator extends Validator
 				$this->addError($object, $attribute, $this->uploadRequired);
 			}
 			if (count($files) > $this->maxFiles) {
-				$this->addError($object, $attribute, $this->tooMany, ['{attribute}' => $attribute, '{limit}' => $this->maxFiles]);
+				$this->addError($object, $attribute, $this->tooMany, ['limit' => $this->maxFiles]);
 			} else {
 				foreach ($files as $file) {
 					$this->validateFile($object, $attribute, $file);
@@ -171,18 +171,18 @@ class FileValidator extends Validator
 		switch ($file->error) {
 			case UPLOAD_ERR_OK:
 				if ($this->maxSize !== null && $file->size > $this->maxSize) {
-					$this->addError($object, $attribute, $this->tooBig, ['{file}' => $file->name, '{limit}' => $this->getSizeLimit()]);
+					$this->addError($object, $attribute, $this->tooBig, ['file' => $file->name, 'limit' => $this->getSizeLimit()]);
 				}
 				if ($this->minSize !== null && $file->size < $this->minSize) {
-					$this->addError($object, $attribute, $this->tooSmall, ['{file}' => $file->name, '{limit}' => $this->minSize]);
+					$this->addError($object, $attribute, $this->tooSmall, ['file' => $file->name, 'limit' => $this->minSize]);
 				}
 				if (!empty($this->types) && !in_array(strtolower(pathinfo($file->name, PATHINFO_EXTENSION)), $this->types, true)) {
-					$this->addError($object, $attribute, $this->wrongType, ['{file}' => $file->name, '{extensions}' => implode(', ', $this->types)]);
+					$this->addError($object, $attribute, $this->wrongType, ['file' => $file->name, 'extensions' => implode(', ', $this->types)]);
 				}
 				break;
 			case UPLOAD_ERR_INI_SIZE:
 			case UPLOAD_ERR_FORM_SIZE:
-				$this->addError($object, $attribute, $this->tooBig, ['{file}' => $file->name, '{limit}' => $this->getSizeLimit()]);
+				$this->addError($object, $attribute, $this->tooBig, ['file' => $file->name, 'limit' => $this->getSizeLimit()]);
 				break;
 			case UPLOAD_ERR_PARTIAL:
 				$this->addError($object, $attribute, $this->message);

framework/yii/validators/NumberValidator.php

@@ -91,10 +91,10 @@ class NumberValidator extends Validator
 			$this->addError($object, $attribute, $this->message);
 		}
 		if ($this->min !== null && $value < $this->min) {
-			$this->addError($object, $attribute, $this->tooSmall, ['{min}' => $this->min]);
+			$this->addError($object, $attribute, $this->tooSmall, ['min' => $this->min]);
 		}
 		if ($this->max !== null && $value > $this->max) {
-			$this->addError($object, $attribute, $this->tooBig, ['{max}' => $this->max]);
+			$this->addError($object, $attribute, $this->tooBig, ['max' => $this->max]);
 		}
 	}
 

framework/yii/validators/RequiredValidator.php

@@ -75,7 +75,7 @@ class RequiredValidator extends Validator
 				$this->addError($object, $attribute, $this->message);
 			} else {
 				$this->addError($object, $attribute, $this->message, [
-					'{requiredValue}' => $this->requiredValue,
+					'requiredValue' => $this->requiredValue,
 				]);
 			}
 		}

framework/yii/validators/StringValidator.php

@@ -112,13 +112,13 @@ class StringValidator extends Validator
 		$length = mb_strlen($value, $this->encoding);
 
 		if ($this->min !== null && $length < $this->min) {
-			$this->addError($object, $attribute, $this->tooShort, ['{min}' => $this->min]);
+			$this->addError($object, $attribute, $this->tooShort, ['min' => $this->min]);
 		}
 		if ($this->max !== null && $length > $this->max) {
-			$this->addError($object, $attribute, $this->tooLong, ['{max}' => $this->max]);
+			$this->addError($object, $attribute, $this->tooLong, ['max' => $this->max]);
 		}
 		if ($this->length !== null && $length !== $this->length) {
-			$this->addError($object, $attribute, $this->notEqual, ['{length}' => $this->length]);
+			$this->addError($object, $attribute, $this->notEqual, ['length' => $this->length]);
 		}
 	}
 

framework/yii/validators/Validator.php

@@ -251,9 +251,9 @@ abstract class Validator extends Component
 	public function addError($object, $attribute, $message, $params = [])
 	{
 		$value = $object->$attribute;
-		$params['{attribute}'] = $object->getAttributeLabel($attribute);
+		$params['attribute'] = $object->getAttributeLabel($attribute);
-		$params['{value}'] = is_array($value) ? 'array()' : $value;
+		$params['value'] = is_array($value) ? 'array()' : $value;
-		$object->addError($attribute, strtr($message, $params));
+		$object->addError($attribute, Yii::$app->getI18n()->format($message, $params, Yii::$app->language));
 	}
 
 	/**

tests/unit/framework/validators/ValidatorTest.php

@@ -220,7 +220,7 @@ class ValidatorTest extends TestCase
 		$errors = $m->getErrors('attr_msg_val');
 		$this->assertEquals('attr_msg_val::array()', $errors[0]);
 		$m = $this->getTestModel(['attr_msg_val' => 'abc']);
-		$val->addError($m, 'attr_msg_val', '{attribute}::{value}::{param}', ['{param}' => 'param_value']);
+		$val->addError($m, 'attr_msg_val', '{attribute}::{value}::{param}', ['param' => 'param_value']);
 		$errors = $m->getErrors('attr_msg_val');
 		$this->assertEquals('attr_msg_val::abc::param_value', $errors[0]);
 	}