Use direct access to operation result context in forms

.rubocop_todo.yml

@@ -1,6 +1,6 @@
 # This configuration was generated by
 # `rubocop --auto-gen-config`
-# on 2024-08-07 02:24:58 UTC using RuboCop version 1.65.0.
+# on 2024-09-27 05:26:10 UTC using RuboCop version 1.65.0.
 # The point is for the user to remove these configuration records
 # one by one as the offenses are removed from the code base.
 # Note that changes in the inspected code, or installation of new
@@ -27,7 +27,7 @@ Metrics/ClassLength:
 # Offense count: 1
 # Configuration parameters: CountComments, CountAsOne.
 Metrics/ModuleLength:
-  Max: 141
+  Max: 144
 
 # Offense count: 3
 # Configuration parameters: CountKeywordArgs, MaxOptionalParameters.

lib/operations/form/base.rb

@@ -126,13 +126,16 @@ def method_missing(name, *args, **kwargs)
         build_attribute.form.new(*args, **kwargs)
       elsif plural_build_attribute&.form
         plural_build_attribute.form.new(*args, **kwargs)
+      elsif operation_result
+        operation_result.context[name]
       end
     end
 
     def respond_to_missing?(name, *)
       has_attribute?(name) ||
         build_nested_form?(build_attribute_name(name)) ||
-        self.class.attributes[nested_attribute_name(name)]&.form
+        self.class.attributes[nested_attribute_name(name)]&.form ||
+        operation_result&.context&.key?(name)
     end
 
     def model_name

spec/operations/form/base_spec.rb

@@ -30,7 +30,7 @@
     end
     let(:attributes) { {} }
     let(:messages) { {} }
-    let(:options) { {} }
+    let(:options) { { operation_result: instance_double(Operations::Result, context: { books: [] }) } }
 
     before do
       stub_const("Dummy::Form", form_class)
@@ -285,6 +285,7 @@
       end
 
       specify { expect(form.build_tag).to be_nil }
+      specify { expect(form.books).to eq [] }
       specify { expect(form.foobar).to be_nil }
     end
 
@@ -295,6 +296,7 @@
       specify { expect(form).to respond_to(:build_post) }
       specify { expect(form).to respond_to(:author_attributes=) }
       specify { expect(form).to respond_to(:posts_attributes=) }
+      specify { expect(form).to respond_to(:books) }
       specify { expect(form).not_to respond_to(:foobar) }
       specify { expect(form).not_to respond_to(:build_tag) }
       specify { expect(form).not_to respond_to(:tags_attributes=) }