[Rails] Chaining actions

[BA Baracus]

If you need to call one action, have it do some preparatory work, and  
then call another action, what's the proper way to do this? It appears  
render_component will work, but the docs say it's expensive and should  
be avoided.

Thanks for the help.

BA

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B.A. Baracus: I thought you weren't crazy no more?
Murdock: Only on paper. 
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