fix(required): broken with nested data

lib/paramoid/object.rb

@@ -66,6 +66,13 @@ def to_required_params
     # @param [Array<Symbol>] path
     # @raise [ActionController::ParameterMissing] if one of the required params is missing
     def ensure_required_params!(params, path: [])
+      if params.is_a?(Array)
+        params.flatten.each do |param|
+          ensure_required_params!(param, path: path)
+        end
+        return params
+      end
+
       current_path = [*path, @name]
 
       _raise_on_missing_parameter!(params, output_key, current_path) if @required
@@ -76,13 +83,9 @@ def ensure_required_params!(params, path: [])
     end
 
     def ensure_required_nested_params!(params, current_path)
-      if params.is_a?(Array)
-        params.flatten.each do |param|
-          @nested.ensure_required_params!(param[output_key], path: current_path)
-        end
-      else
-        @nested.ensure_required_params!(params ? params[output_key] : nil, path: current_path)
-      end
+      return params if current_path.size > 1 && params.nil?
+
+      @nested.ensure_required_params!(params ? params[output_key] : nil, path: current_path)
 
       params
     end
@@ -156,6 +159,7 @@ def nested?
     private
 
     def _raise_on_missing_parameter!(params, key, current_path)
+      return if params.nil?
       return if _param_exist?(params, key)
 
       raise ActionController::ParameterMissing, current_path.join('.')

spec/paramoid/complex_spec.rb

@@ -72,6 +72,30 @@
           }
         )
       end
+
+      context 'and the required parameter is missing' do
+        let(:params_hash) do
+          {
+
+            unwanted: 1,
+            name: 'some_name',
+            buyer: {
+              payment_method: {
+                id: 1
+              }
+            },
+            person: {},
+            items: [{}, { sub_items: [{ price: 5 }] }]
+          }
+        end
+
+        it 'raises an error' do
+          expect { sanitized }.to raise_error(
+            ActionController::ParameterMissing,
+            'param is missing or the value is empty: items.sub_items.id'
+          )
+        end
+      end
     end
   end
 
@@ -126,7 +150,10 @@
     let(:user) { double(admin?: false) }
     let(:params_hash) do
       {
-        name: 'some_name'
+        name: 'some_name',
+        buyer: {
+          payment_method: {}
+        }
       }
     end
 

spec/paramoid/object_spec.rb

@@ -105,11 +105,15 @@
     context 'when it\'s nested' do
       let(:nested) { described_class.new(:nested, nil, required: true) }
 
-      it 'raises an error' do
-        expect do
-          subject.ensure_required_params!(params)
-        end.to raise_error(ActionController::ParameterMissing,
-                           'param is missing or the value is empty: some_param.nested')
+      context 'and some_param is present, but nested is required' do
+        let(:params_hash) { { 'not_this_param' => 'some_value', 'some_param' => {} } }
+
+        it 'raises an error' do
+          expect do
+            subject.ensure_required_params!(params)
+          end.to raise_error(ActionController::ParameterMissing,
+                             'param is missing or the value is empty: some_param.nested')
+        end
       end
 
       context 'and some_param is required' do
@@ -129,8 +133,8 @@
         it 'skips the check' do
           expect do
             subject.ensure_required_params!(params)
-          end.to raise_error(ActionController::ParameterMissing,
-                             'param is missing or the value is empty: some_param.nested')
+          end.not_to raise_error(ActionController::ParameterMissing,
+                                 'param is missing or the value is empty: some_param.nested')
         end
       end
     end

spec/support/params.rb

@@ -47,7 +47,7 @@ def initialize(user = nil)
       param :discount, transformer: ->(data) { data&.to_f / 100 } if user.admin?
 
       array :sub_items do
-        param :id
+        param :id, required: true
         default :price, 0
       end
     end