What's the correct way to read some data from a yaml file and use it in an erb page?

Question

I'm using rails to build a website.

I have a yaml file contails some colors, which is config/colors.yml

---
- white
- red
- blue
- yellow
- ...

And, there is an erb file app/views/users/setting.html.erb, which will need the data in config/colors.yml, and put them in a tag.

I don't know what's the correct way to read the yaml file. Can I read once and store them in memory, or I should read it each time the page is requested?

Answer 1

If the colors never change, it's okay to cache them. Follow this DZone tutorial.

3rd result for Google: ruby yaml tutorial.