122 lines
4.3 KiB
Plaintext
122 lines
4.3 KiB
Plaintext
{-# LANGUAGE CPP #-}
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{-# LANGUAGE TemplateHaskell #-}
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{-# LANGUAGE OverloadedStrings #-}
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-- | Settings are centralized, as much as possible, into this file. This
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-- includes database connection settings, static file locations, etc.
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-- In addition, you can configure a number of different aspects of Yesod
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-- by overriding methods in the Yesod typeclass. That instance is
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-- declared in the ~project~.hs file.
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module Settings
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( hamletFile
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, cassiusFile
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, juliusFile
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, luciusFile
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, widgetFile
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, approot
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, staticroot
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, staticdir
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) where
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import qualified Text.Hamlet as H
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import qualified Text.Cassius as H
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import qualified Text.Julius as H
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import qualified Text.Lucius as H
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import Language.Haskell.TH.Syntax
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import Yesod.Widget (addWidget, addCassius, addJulius, addLucius)
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import Data.Monoid (mempty, mappend)
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import System.Directory (doesFileExist)
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import Data.Text (Text)
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-- | The base URL for your application. This will usually be different for
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-- development and production. Yesod automatically constructs URLs for you,
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-- so this value must be accurate to create valid links.
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approot :: Text
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#ifdef PRODUCTION
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-- You probably want to change this. If your domain name was "yesod.com",
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-- you would probably want it to be:
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-- > approot = "http://www.yesod.com"
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-- Please note that there is no trailing slash.
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approot = "http://localhost:3000"
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#else
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approot = "http://localhost:3000"
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#endif
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-- | The location of static files on your system. This is a file system
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-- path. The default value works properly with your scaffolded site.
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staticdir :: FilePath
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staticdir = "static"
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-- | The base URL for your static files. As you can see by the default
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-- value, this can simply be "static" appended to your application root.
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-- A powerful optimization can be serving static files from a separate
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-- domain name. This allows you to use a web server optimized for static
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-- files, more easily set expires and cache values, and avoid possibly
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-- costly transference of cookies on static files. For more information,
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-- please see:
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-- http://code.google.com/speed/page-speed/docs/request.html#ServeFromCookielessDomain
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--
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-- If you change the resource pattern for StaticR in ~project~.hs, you will
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-- have to make a corresponding change here.
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--
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-- To see how this value is used, see urlRenderOverride in ~project~.hs
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staticroot :: Text
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staticroot = approot `mappend` "/static"
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-- The rest of this file contains settings which rarely need changing by a
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-- user.
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-- The following three functions are used for calling HTML, CSS and
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-- Javascript templates from your Haskell code. During development,
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-- the "Debug" versions of these functions are used so that changes to
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-- the templates are immediately reflected in an already running
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-- application. When making a production compile, the non-debug version
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-- is used for increased performance.
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--
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-- You can see an example of how to call these functions in Handler/Root.hs
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--
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-- Note: due to polymorphic Hamlet templates, hamletFileDebug is no longer
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-- used; to get the same auto-loading effect, it is recommended that you
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-- use the devel server.
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toHamletFile, toCassiusFile, toJuliusFile, toLuciusFile :: String -> FilePath
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toHamletFile x = "hamlet/" ++ x ++ ".hamlet"
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toCassiusFile x = "cassius/" ++ x ++ ".cassius"
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toJuliusFile x = "julius/" ++ x ++ ".julius"
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toLuciusFile x = "lucius/" ++ x ++ ".lucius"
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hamletFile :: FilePath -> Q Exp
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hamletFile = H.hamletFile . toHamletFile
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cassiusFile :: FilePath -> Q Exp
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#ifdef PRODUCTION
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cassiusFile = H.cassiusFile . toCassiusFile
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#else
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cassiusFile = H.cassiusFileDebug . toCassiusFile
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#endif
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luciusFile :: FilePath -> Q Exp
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#ifdef PRODUCTION
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luciusFile = H.luciusFile . toLuciusFile
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#else
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luciusFile = H.luciusFileDebug . toLuciusFile
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#endif
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juliusFile :: FilePath -> Q Exp
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#ifdef PRODUCTION
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juliusFile = H.juliusFile . toJuliusFile
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#else
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juliusFile = H.juliusFileDebug . toJuliusFile
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#endif
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widgetFile :: FilePath -> Q Exp
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widgetFile x = do
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let h = unlessExists toHamletFile hamletFile
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let c = unlessExists toCassiusFile cassiusFile
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let j = unlessExists toJuliusFile juliusFile
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let l = unlessExists toLuciusFile luciusFile
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[|addWidget $h >> addCassius $c >> addJulius $j >> addLucius $l|]
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where
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unlessExists tofn f = do
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e <- qRunIO $ doesFileExist $ tofn x
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if e then f x else [|mempty|]
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