Copy formatter and content type defaults from grape

Author: padde

lib/grape-swagger.rb

@@ -18,6 +18,24 @@ def model_parsers
     end
   end
   autoload :Rake, 'grape-swagger/rake/oapi_tasks'
+
+  # Copied from https://github.com/ruby-grape/grape/blob/v2.2.0/lib/grape/formatter.rb
+  FORMATTER_DEFAULTS = {
+    json: Grape::Formatter::Json,
+    jsonapi: Grape::Formatter::Json,
+    serializable_hash: Grape::Formatter::SerializableHash,
+    txt: Grape::Formatter::Txt,
+    xml: Grape::Formatter::Xml
+  }.freeze
+
+  # Copied from https://github.com/ruby-grape/grape/blob/v2.2.0/lib/grape/content_types.rb
+  CONTENT_TYPE_DEFAULTS = {
+    xml: 'application/xml',
+    serializable_hash: 'application/json',
+    json: 'application/json',
+    binary: 'application/octet-stream',
+    txt: 'text/plain'
+  }.freeze
 end
 
 module SwaggerRouting

lib/grape-swagger/doc_methods/produces_consumes.rb

@@ -7,7 +7,7 @@ class << self
         def call(*args)
           return ['application/json'] unless args.flatten.present?
 
-          args.flatten.map { |x| Grape::ContentTypes::CONTENT_TYPES[x] || x }.uniq
+          args.flatten.map { |x| GrapeSwagger::CONTENT_TYPE_DEFAULTS[x] || x }.uniq
         end
       end
     end

lib/grape-swagger/endpoint.rb

@@ -11,8 +11,8 @@ def content_types_for(target_class)
 
       if content_types.empty?
         formats       = [target_class.format, target_class.default_format].compact.uniq
-        formats       = Grape::Formatter.formatters(**{}).keys if formats.empty?
-        content_types = Grape::ContentTypes::CONTENT_TYPES.select do |content_type, _mime_type|
+        formats       = GrapeSwagger::FORMATTER_DEFAULTS.keys if formats.empty?
+        content_types = GrapeSwagger::CONTENT_TYPE_DEFAULTS.select do |content_type, _mime_type|
           formats.include? content_type
         end.values
       end