Merge 8126b69 into c1c0ba7

README.md

@@ -1079,7 +1079,7 @@ __Please note__: schemas compiled before the keyword is removed will continue to
 
 Returns the text with all errors in a String.
 
-Options can have properties `separator` (string used to separate errors, ", " by default) and `dataVar` (the variable name that dataPaths are prefixed with, "data" by default).
+Options can have properties `separator` (string used to separate errors, ", " by default) `dataVar` (the variable name that dataPaths are prefixed with, "data" by default) and `extraInfo` (should the error message be more detailed).
 
 
 ## Options

lib/ajv.js

@@ -404,7 +404,7 @@ function _get$IdOrId(schema) {
  * Convert array of error message objects to string
  * @this   Ajv
  * @param  {Array<Object>} errors optional array of validation errors, if not passed errors from the instance are used.
- * @param  {Object} options optional options with properties `separator` and `dataVar`.
+ * @param  {Object} options optional options with properties `separator`, `dataVar` and `extraInfo`.
  * @return {String} human readable string with all errors descriptions
  */
 function errorsText(errors, options) {
@@ -413,11 +413,21 @@ function errorsText(errors, options) {
   options = options || {};
   var separator = options.separator === undefined ? ', ' : options.separator;
   var dataVar = options.dataVar === undefined ? 'data' : options.dataVar;
+  var extraInfo = options.extraInfo === true;
 
   var text = '';
+  var extraText = '';
   for (var i=0; i<errors.length; i++) {
     var e = errors[i];
-    if (e) text += dataVar + e.dataPath + ' ' + e.message + separator;
+    if (e) {
+      if(extraInfo) {
+        if (e.params && e.params.allowedValues)
+          extraText += ' (' + e.params.allowedValues.join(',') + ')';
+        else if (e.params && e.params.additionalProperty)
+          extraText += ' (' + e.params.additionalProperty + ')';
+      }
+      text += dataVar + e.dataPath + ' ' + e.message + extraText + separator;
+    }
   }
   return text.slice(0, -separator.length);
 }