Simplifiable 'if' statement

Reports if statements that can be replaced with case statements.

Use the Minimum number of branches field to specify the minimum number of when branches for the resulting case statement.

Example:

fruit = gets

if fruit == 'apple' # Simplifiable 'if' statement
  puts 'This is apple!'
elsif fruit == 'peach'
  puts 'This is peach!'
elsif fruit == 'orange'
  puts 'This is orange!'
elsif fruit == 'banana'
  puts 'This is banana!'
end

Locating this inspection

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

RubyIfCanBeCaseInspection

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | Ruby | Control flow issues

Inspection ID: RubyIfCanBeCaseInspection

Inspection options

Here you can find the description of settings available for the Simplifiable 'if' statement inspection, and the reference of their default values.

Minimum number of branches

Option ID:

m_minimumBraces

Default value:

Suppressing Inspection

You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:

//noinspection RubyIfCanBeCaseInspection

More detailed instructions as well as other ways and options that you have can be found in the product documentation:

RubyMine 2025.2

Inspection Details
By default bundled with:	Qodana for Ruby 2025.2, RubyMine 2025.2,

Last modified: 18 September 2025