In the HKNA project, i exposed a flag in a view but it turns on the available option names are True and False instead of Yes and No.

 

At first i thought i need to either override the view exposed filter template or create a custom module and write hook to preprocess the view. Luckily, i found the String Overrides module.

After installed the String Overrides module, you could set the string @ Administration » Configuration » Regional and language » String overrides. Add the True and False mapping as follow.

 

Save and check the exposed filter again.

 

Done =)

Reference:

• Drupal Module – String Overrides
• Rename Views Exposed Filter from true, false, <any> to inactive, active, and <both>