Revert Grape.config.param_builder

Author: ericproulx

README.md

@@ -703,6 +703,9 @@ end
 ## Configuration
 
 Use `Grape.configure` to set up global settings at load time.
+Currently the configurable settings are:
+
+* `param_builder`: Sets the [Parameter Builder](#parameters), defaults to `Grape::Extensions::ActiveSupport::HashWithIndifferentAccess::ParamBuilder`.
 
 To change a setting value make sure that at some point during load time the following code runs
 
@@ -712,6 +715,17 @@ Grape.configure do |config|
 end
 ```
 
+For example, for the `param_builder`, the following code could run in an initializer:
+
+```ruby
+Grape.configure do |config|
+  config.param_builder = :hashie_mash
+end
+```
+
+Available parameter builders are `:hash`, `:hash_with_indifferent_access`, and `:hashie_mash`.
+See [params_builder](lib/grape/params_builder)
+
 You can also configure a single API:
 
 ```ruby

UPGRADING.md

@@ -3,9 +3,8 @@ Upgrading Grape
 
 #### Params Builder
 
-- Passing a class to `build_with` has been deprecated in favor of a symbolized short_name. See `SHORTNAME_LOOKUP` in [params_builder](lib/grape/params_builder.rb)
+- Passing a class to `build_with` or `Grape.config.param_builder` has been deprecated in favor of a symbolized short_name. See `SHORTNAME_LOOKUP` in [params_builder](lib/grape/params_builder.rb)
 - Including Grape's extensions like `Grape::Extensions::Hashie::Mash::ParamBuilder` has been deprecated in favor of using `build_with` at the route level.
-- Grape.configure `param_builder` has been removed in favor using `build_with` at the route level.
 
 ### Upgrading to >= 2.4.0
 

lib/grape.rb

@@ -63,7 +63,10 @@ def self.deprecator
     @deprecator ||= ActiveSupport::Deprecation.new('2.0', 'Grape')
   end
 
-  configure(&:compile_methods!)
+  configure do |config|
+    config.param_builder = :hash_with_indifferent_access
+    config.compile_methods!
+  end
 end
 
 # https://api.rubyonrails.org/classes/ActiveSupport/Deprecation.html

lib/grape/request.rb

@@ -9,7 +9,7 @@ class Request < Rack::Request
 
     def initialize(env, build_params_with: nil)
       super(env)
-      @params_builder = Grape::ParamsBuilder.params_builder_for(build_params_with || DEFAULT_PARAMS_BUILDER)
+      @params_builder = Grape::ParamsBuilder.params_builder_for(build_params_with || Grape.config.param_builder)
     end
 
     def params