Do not overwrite overridden fields and associations

lib/blueprinter/reflection.rb

@@ -48,7 +48,7 @@ def fields
         @fields ||= @view_collection.fields_for(name).each_with_object({}) do |field, obj|
           next if field.options[:association]
 
-          obj[field.method] = Field.new(field.method, field.name, field.options)
+          obj[field.method] ||= Field.new(field.method, field.name, field.options)
         end
       end
 
@@ -63,7 +63,7 @@ def associations
 
           blueprint = field.options.fetch(:blueprint)
           view = field.options[:view] || :default
-          obj[field.method] = Association.new(field.method, field.name, blueprint, view, field.options)
+          obj[field.method] ||= Association.new(field.method, field.name, blueprint, view, field.options)
         end
       end
     end

spec/units/reflection_spec.rb

@@ -45,6 +45,11 @@
       view :legacy do
         association :parts, blueprint: part_bp, name: :pieces
       end
+
+      view :aliased_names do
+        field :name, name: :aliased_name
+        association :category, blueprint: cat_bp, name: :aliased_category
+      end
     end
   }
 
@@ -56,6 +61,7 @@
       :extended_plus,
       :extended_plus_plus,
       :legacy,
+      :aliased_names
     ].sort
   end
 
@@ -76,6 +82,17 @@
     ].sort
   end
 
+  it 'should list overridden fields' do
+    fields = widget_blueprint.reflections.fetch(:aliased_names).fields
+    expect(fields.keys.sort).to eq [
+      :id,
+      :name,
+    ].sort
+    name_field = fields[:name]
+    expect(name_field.name).to eq :name
+    expect(name_field.display_name).to eq :aliased_name
+  end
+
   it 'should list associations' do
     associations = widget_blueprint.reflections.fetch(:default).associations
     expect(associations.keys).to eq [:category]
@@ -92,6 +109,16 @@
     expect(associations[:parts].display_name).to eq :pieces
   end
 
+  it 'should list overridden associations' do
+    associations = widget_blueprint.reflections.fetch(:aliased_names).associations
+    expect(associations.keys.sort).to eq [
+      :category
+    ].sort
+    category_association = associations[:category]
+    expect(category_association.name).to eq :category
+    expect(category_association.display_name).to eq :aliased_category
+  end
+
   it 'should get a blueprint and view from an association' do
     assoc = widget_blueprint.reflections[:extended].associations[:parts]
     expect(assoc.name).to eq :parts