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The Definitive Guide to Drupal 7 by Károly Négyesi, Claudina Sarahe, Dani Nordin, Ed Carlevale, Benjamin Melançon, Amye Scavarda, Ryan Szrama, Kay VanValkenburgh, Brian Travis, Greg Anderson, Robert Douglass, Roy Scholten, Peter Wolanin, Susan Stewart, Mike Gifford, Forest Mars, Sam Boyer, Florian Lorétan, Allie Micka, Jake Strawn, Stefan Freudenberg, Dmitri Gaskin, Bojhan Somers, Albert Albala, George Cassie, Kasey Qynn Dolin, Jacine Luisi, Dan Hakimzadeh, Robin Monks, Nathaniel Catchpole, Stéphane Corlosquet, Mike Ryan, Michelle Lauer, Greg Stout

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C H A P T E R  16

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Advanced Theming

by Jacine Luisi

One of the best things about Drupal's theme layer is the sheer amount of flexibility it provides. In the previous chapter you learned the basics of creating a theme: working with .info files, template files, and theme functions. When implementing more custom themes, sometimes these tools alone are not enough and you need to dig deeper. This is the point where the line between front-end developer and back-end developer gets a little blurry, but stay with us.

By the time you finish reading this chapter you'll know how to work with variables in preprocess functions, customize forms, and use the ...

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