equals not allow to ignore case.

Hi @gordon,
Under the hood, the equals condition is super simple and adding an ignore_case option wouldn't be especially elegant, unfortunately.

If using Migrate Conditions, the best options are to use matches, as you proposed, or to use in_array like this:

  field_destination/value:
    plugin: if_condition
    source: source_value
    condition:
      plugin: in_array
      value:
        - yes
        - Yes
    do_get: constants/true
    else_get: constants/false

Though I would recommend using the evaluate_condition process plugin since it looks like you are setting a boolean.

  field_destination/value:
    plugin: evaluate_condition
    source: source_value
    condition:
      plugin: in_array
      value:
        - yes
        - Yes

or

  field_destination/value:
    plugin: evaluate_condition
    source: source_value
    condition:
      plugin: matches
      regex: /^yes$/i

which could be simplified further by using parens notation to configure the condition:

  field_destination/value:
    plugin: evaluate_condition
    source: source_value
    condition: matches(/^yes$/i)

If there's some quirk where you need to use if_condition, I'd also like to point out the relatively new do_default_value and else_default_value properties, which might help you avoid defining constants. See ✨ Add do_/else_default_value settings for if_condition Fixed .

That all said, you could do this with the core static_map plugin as well. Something like

  field_destination/value:
    plugin: static_map
    source: source_value
    map:
      Yes: TRUE
      yes: TRUE
    default_value: FALSE