From 8d581743f82603b43e72d32f70668792d1e3d8e8 Mon Sep 17 00:00:00 2001
From: Eric Silverberg <eric@perrystreet.com>
Date: Sat, 25 Apr 2026 17:59:02 -0400
Subject: [PATCH 1/2] [GH-6976] Expose params passed into a method

---
 lib/rubyzen/declarations/method_declaration.rb | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/lib/rubyzen/declarations/method_declaration.rb b/lib/rubyzen/declarations/method_declaration.rb
index f144bd9..5fbafdc 100644
--- a/lib/rubyzen/declarations/method_declaration.rb
+++ b/lib/rubyzen/declarations/method_declaration.rb
@@ -25,6 +25,14 @@ def name
         node.method_name.to_s
       end
 
+      def parameters
+        node.arguments
+      end
+
+      def parameters?
+        node.arguments.any?
+      end
+
     end
   end
 end

From 12567b27a3ba3af6f29b767f82dc4ca7acd7de47 Mon Sep 17 00:00:00 2001
From: Eric Silverberg <eric@perrystreet.com>
Date: Mon, 27 Apr 2026 17:27:21 -0400
Subject: [PATCH 2/2] PR feedback

---
 lib/rubyzen/collections/methods_collection.rb |  8 +++++++
 .../collections/parameters_collection.rb      |  7 ++++++
 .../declarations/method_declaration.rb        |  7 ++++--
 .../declarations/parameter_declaration.rb     | 24 +++++++++++++++++++
 .../models/no_arguments_named_biz_spec.rb     | 11 +++++++++
 sample_project/src/models/user.rb             | 12 ++++++----
 6 files changed, 63 insertions(+), 6 deletions(-)
 create mode 100644 lib/rubyzen/collections/parameters_collection.rb
 create mode 100644 lib/rubyzen/declarations/parameter_declaration.rb
 create mode 100644 sample_project/spec/models/no_arguments_named_biz_spec.rb

diff --git a/lib/rubyzen/collections/methods_collection.rb b/lib/rubyzen/collections/methods_collection.rb
index ae32995..d75d700 100644
--- a/lib/rubyzen/collections/methods_collection.rb
+++ b/lib/rubyzen/collections/methods_collection.rb
@@ -6,6 +6,14 @@ module Collections
     class MethodsCollection < BaseCollection
       include Rubyzen::Providers::CollectionFilterProvider
 
+      def parameters
+        ParametersCollection.new(
+          flat_map do |method|
+            method.parameters
+          end
+        )
+      end
+
       def if_statements
         DeclarationCollection.new(
           flat_map do |method|
diff --git a/lib/rubyzen/collections/parameters_collection.rb b/lib/rubyzen/collections/parameters_collection.rb
new file mode 100644
index 0000000..0094c20
--- /dev/null
+++ b/lib/rubyzen/collections/parameters_collection.rb
@@ -0,0 +1,7 @@
+module Rubyzen
+  module Collections
+    class ParametersCollection < BaseCollection
+      include Rubyzen::Providers::CollectionFilterProvider
+    end
+  end
+end
diff --git a/lib/rubyzen/declarations/method_declaration.rb b/lib/rubyzen/declarations/method_declaration.rb
index 5fbafdc..47ee1f8 100644
--- a/lib/rubyzen/declarations/method_declaration.rb
+++ b/lib/rubyzen/declarations/method_declaration.rb
@@ -26,13 +26,16 @@ def name
       end
 
       def parameters
-        node.arguments
+        Collections::ParametersCollection.new(
+          node.arguments.map do |arg|
+            ParameterDeclaration.new(arg, self)
+          end
+        )
       end
 
       def parameters?
         node.arguments.any?
       end
-
     end
   end
 end
diff --git a/lib/rubyzen/declarations/parameter_declaration.rb b/lib/rubyzen/declarations/parameter_declaration.rb
new file mode 100644
index 0000000..b28d295
--- /dev/null
+++ b/lib/rubyzen/declarations/parameter_declaration.rb
@@ -0,0 +1,24 @@
+module Rubyzen
+  module Declarations
+    class ParameterDeclaration
+      include Rubyzen::Providers::FilePathProvider
+      include Rubyzen::Providers::LineNumberProvider
+      include Rubyzen::Providers::ClassNameProvider
+
+      attr_reader :node, :parent
+
+      def initialize(node, parent)
+        @node = node
+        @parent = parent
+      end
+
+      def name
+        node.name
+      end
+
+      def default_value
+        node.children[1]&.value
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/sample_project/spec/models/no_arguments_named_biz_spec.rb b/sample_project/spec/models/no_arguments_named_biz_spec.rb
new file mode 100644
index 0000000..c39cbbc
--- /dev/null
+++ b/sample_project/spec/models/no_arguments_named_biz_spec.rb
@@ -0,0 +1,11 @@
+require_relative '../spec_helper'
+
+RSpec.describe 'No complex logic in models' do
+  it 'has no methods with arguments named biz' do
+    expect(models.all_methods.parameters.with_name(:biz).empty?).to be true
+  end
+
+  it 'has no methods with arguments named biz that have a default value' do
+    expect(models.all_methods.parameters.with_name(:biz).first.default_value.empty?).to be true
+  end
+end
diff --git a/sample_project/src/models/user.rb b/sample_project/src/models/user.rb
index d5fe667..2b548cf 100644
--- a/sample_project/src/models/user.rb
+++ b/sample_project/src/models/user.rb
@@ -1,12 +1,12 @@
 class User < ActiveRecord::BaseAurora
   attr_reader :name, :email
-  
+
   private
-  
+
   attr_writer :password
-  
+
   public
-  
+
   def active?
     true
   end
@@ -14,4 +14,8 @@ def active?
   def foo
     true
   end
+
+  def bar(biz: "Bizzzz")
+    "#{biz}"
+  end
 end