Does containsIgnoreCase() and contains() string methods , work with a Rich Text Field?

Question

I am working on use case, where i need to search a keyword on a custom Object containing three Rich Text Fields. I am using the string method containsIgnoreCase(). But even if the field contains the keyword, i get false in return when i do ( Rich_Text__c.containsIgnoreCase(keyword) ). Am i doing something wrong here, or is there a better way to do this ?

Note :

1. The Rich_Text__c records currently contain only texts with some HTML markups.
2. I have done a SOQL Query to search on the Custom Object

Answer 1

Rich Text Fields are a tough nut to crack because of the different types of text/data that they can contain.

My suggestion is first convert this to a text field & use the string methods whatever you need

String Inputfield = yourObject.rich_text_field__c;

Inputfield = Inputfield.replaceAll('<[/a-zAZ0-9]*>','');