1 files changed, 14 insertions, 0 deletions
diff --git a/lib/models/book.js b/lib/models/book.js
index 6daa684..1835032 100644
--- a/lib/models/book.js
+++ b/lib/models/book.js
@@ -162,6 +162,20 @@ Book.prototype.isMultilingual = function() {
 };
 
 /**
+    Add a new language book
+
+    @param {String} language
+    @param {Book} book
+    @return {Book}
+*/
+Book.prototype.addLanguageBook = function(language, book) {
+    var books = this.getBooks();
+    books = books.set(language, book);
+
+    return this.set('books', books);
+};
+
+/**
     Change log level
 
     @param {Book} book