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Server side web scripting in Haskell

2000; Cambridge University Press; Volume: 10; Issue: 1 Linguagem: Inglês

10.1017/s0956796899003561

ISSN

1469-7653

Autores

Erik Meijer,

Tópico(s)

Advanced Database Systems and Queries

Resumo

The Common Gateway Interface (CGI) for generating dynamic documents on web servers imposes much accidental complexity on the programmer. The Haskell/CGI library documented in this paper hides all this unpleasantness by using the common sense ‘design pattern’ of separating model and presentation. Low-level query string requests are represented by association lists, and primitive HTTP responses are easily constructed using a set of HTML generating combinators. The CGI programmer only needs to write a worker function that maps an abstract request into an abstract response. A (higher-order) wrapper function then transmutes the worker into a real low-level CGI script that deals with the exact format of concrete requests and responses as required by the CGI standard.

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