feat: ransack options support

README.md

@@ -99,6 +99,21 @@ end
 
 ## Customizations
 
+- Ransack options can be customized defining a `ransack_options` method in the controller, example:
+
+```rb
+module Admin
+  class PostsController < Admin::ApplicationController
+    prepend AdministrateRansack::Searchable
+
+    def ransack_options
+      # raises an exception on unknown parameters
+      { ignore_unknown_conditions: false }
+    end
+  end
+end
+```
+
 - Sample call of the filters partial with different options provided:
 
 ```erb

lib/administrate_ransack/searchable.rb

@@ -5,7 +5,8 @@
 module AdministrateRansack
   module Searchable
     def scoped_resource
-      @ransack_results = super.ransack(params[:q])
+      options = respond_to?(:ransack_options) ? ransack_options : {}
+      @ransack_results = super.ransack(params[:q], **options)
       @ransack_results.result(distinct: true)
     end
 

spec/controllers/admin/posts_controller_spec.rb

@@ -7,5 +7,13 @@
 
       expect(assigns(:ransack_results)).to be_instance_of Ransack::Search
     end
+
+    context "when ransack_options is defined" do
+      it "raises an exception with an invalid parameter" do
+        expect {
+          get :index, params: { "q[title2_cont]" => "test" }
+        }.to raise_exception(ArgumentError, 'Invalid search term title2_cont')
+      end
+    end
   end
 end

spec/dummy/app/controllers/admin/posts_controller.rb

@@ -2,6 +2,10 @@ module Admin
   class PostsController < Admin::ApplicationController
     prepend AdministrateRansack::Searchable
 
+    def ransack_options
+      { ignore_unknown_conditions: false }
+    end
+
     # Overwrite any of the RESTful controller actions to implement custom behavior
     # For example, you may want to send an email after a foo is updated.
     #