🐛 Fix Rails 5.2 and 6.0 support

Author: pboling

README.md

@@ -91,14 +91,21 @@ serialize :parameters, Hash
 
 so we instead switch to serializing as JSON:
 ```ruby
+# Rails 5.2/6.0
 serialize :parameters, JSON
+# Rails 6.1+
+serialize :parameters, type: Hash, coder: JSON
 ```
 
 If an implementation needs to continue using the serialized Hash,
-you will need to override the definition by reopening the model, and adding:
+you will need to override the definition by reopening the model,
+and set it back to the old way!
 
 ```ruby
+# Rails 5.2/6.0
 serialize :parameters, Hash
+# Rails 6.1+ (untested, might not work!)
+serialize :parameters, type: Hash, coder: Hash
 ```
 
 In addition, one of the following is also needed.

app/models/masq/open_id_request.rb

@@ -4,7 +4,11 @@ class OpenIdRequest < ActiveRecord::Base
 
     before_validation :make_token, on: :create
 
-    serialize :parameters, type: Hash, coder: JSON
+    if Rails.gem_version >= Gem::Version.create("6.1")
+      serialize :parameters, type: Hash, coder: JSON
+    else # Rails 5.2 & 6.0
+      serialize :parameters, JSON
+    end
 
     def parameters
       self[:parameters]

test/internal/config/database.yml

@@ -1,3 +1,4 @@
+---
 test:
   adapter:  sqlite3
   database: db/combustion_test.sqlite