LowFile-scopeRuby Plug & play

Create base controllers for shared concerns

Factor shared before_actions/filters/error handling into ApplicationController or a base controller.

Why this matters

Improves consistency and reduces boilerplate.

Side-by-side examples engineers can pattern-match during review.

Avoid

OrdersController: before_action :require_auth
UsersController: before_action :require_auth

Prefer

class ApplicationController < ActionController::Base
  before_action :require_auth
end

Bad

repeat filters in each controller

Good

shared filter in base

From the same buckets as this rule.

Critical
Avoid Duplicating String Literals
Store repeated string literals in constants or variables to improve maintainability and reduce redundancy.
duplication-complexitymaintainability
Critical
Avoid Redundant `None` Comparisons
Identify cases where `x is None` or `x is not None` is used redundantly when `x` is always or never `None`. This may indicate a deeper logic issue.
duplication-complexityreadability-refactor+1
High
Avoid Functions That Always Return the Same Value
Identify functions that return the same value regardless of input. This may indicate poor design or a logic error.
duplication-complexityreadability-refactor+1