Add support for mongoid 8

Author: rmm5t

.github/workflows/ci.yml

@@ -11,6 +11,7 @@ jobs:
           - carrierwave-2.1
           - carrierwave-2.2
           - mongoid-7
+          - mongoid-8
         include:
           - { mongodb: "4.4", ruby: "2.6", gemfile: "carrierwave-0.10" }
           - { mongodb: "4.4", ruby: "2.6", gemfile: "carrierwave-0.11" }

carrierwave-mongoid.gemspec

@@ -21,7 +21,7 @@ Gem::Specification.new do |s|
   s.require_paths = ["lib"]
 
   s.add_dependency "carrierwave", [">= 0.8", "< 3"]
-  s.add_dependency "mongoid", [">= 3.0", "< 8.0"]
+  s.add_dependency "mongoid", [">= 3.0", "< 9.0"]
   s.add_dependency "mongoid-grid_fs", [">= 1.3", "< 3.0"]
   s.add_dependency "mime-types", "< 3" if RUBY_VERSION < "2.0" # mime-types 3+ doesn't support ruby 1.9
   s.add_development_dependency "rspec", "~> 3.4"

gemfiles/mongoid-8.gemfile

@@ -0,0 +1,6 @@
+source "https://rubygems.org"
+
+gem "mongoid", "~> 8.0"
+gem "carrierwave", "~> 2.2"
+
+gemspec path: "../"