how to find element by text

[paramadeep]

I have a scenario to locate an element by its containing text.
For example,
page.find("#product",:text => "shampoo")
How can I define this element in Capypage?

[paramadeep]

also if I have a part of my selector dynamic, how could I define element.
For example
page.find('#product[name="shampoo"]')
where the name attribute would change for every product, and I have to locate the product by its name.