From 894facb1967c9f394be92ec699e4eafddc2aea52 Mon Sep 17 00:00:00 2001 From: Johannes Opper Date: Mon, 22 Feb 2016 17:36:08 +0100 Subject: Fix bug in JSON deserialization when column default is an empty string When `ActiveRecord::Coders::JSON` serialization is used and the default of the column returns `''` it raises the following error: ``` JSON::ParserError: A JSON text must at least contain two octets! ``` If MySQL is running in non-strict mode, it returns an empty string as column default for a text column: ```ruby def extract_default if blob_or_text_column? @default = null || strict ? nil : '' end end ``` Since `''` is invalid JSON, there shouldn't be an attempt to parse it, it should be treated like nil. ActiveRecord::Coders::JSON should behave consistently for all possible non-user-set column default values. --- activerecord/lib/active_record/coders/json.rb | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'activerecord/lib') diff --git a/activerecord/lib/active_record/coders/json.rb b/activerecord/lib/active_record/coders/json.rb index 75d3bfe625..cb185a881e 100644 --- a/activerecord/lib/active_record/coders/json.rb +++ b/activerecord/lib/active_record/coders/json.rb @@ -6,7 +6,7 @@ module ActiveRecord end def self.load(json) - ActiveSupport::JSON.decode(json) unless json.nil? + ActiveSupport::JSON.decode(json) unless json.blank? end end end -- cgit v1.2.3