haskell - create edit operation in a Yesod SubSite -


i'm having many problems create crud operation in subsite in yesod, have following routes

mkyesodsubdata "democrud" [parseroutes| /demonew demonewr post /demoedit/#demoid demoeditr post |]

and following subdispach instance

instance (yesod master,rendermessage master formmessage, yesodpersist master, yesodpersistbackend master ~ sqlbackend)    => yesodsubdispatch democrud (handlert master io)     yesodsubdispatch = $(mkyesodsubdispatch resourcesdemocrud)

but have error

couldn't match expected type ‘demoid                               -> handlert democrud (handlert parent1 io) a0’             actual type ‘handlert democrud (handlert master0 io) html’

i search in page example don't use id in routes

michael snoyman right, had error in postdemoeditr, following code correction

getdemoeditr :: yesodpersist master          => yesodpersistbackend master ~ sqlbackend           => (yesod master,rendermessage master formmessage)           => demoid -> handlert democrud (handlert master io) html  getdemoeditr  demoid =             demo <- lift $ rundb $ get404 demoid              (widget, encoding) <- lift $ generateformpost $ renderbootstrap3 bootstrapbasicform $ demoform  (just demo)            lift $ defaultlayout $                     [whamlet|                     <form method=post>                           ^{widget}                           <div>                                 <input type=submit>                         |]     postdemoeditr :: yesodpersist master           => yesodpersistbackend master ~ sqlbackend            => (yesod master,rendermessage master formmessage)            => demoid -> handlert democrud (handlert master io) html postdemoeditr demoid  =             demo <- lift $  rundb $ get404 demoid             ((result,widget), encoding) <- lift $ runformpost $ renderbootstrap3 bootstrapbasicform $ demoform  (just demo)             case result of                  formsuccess demoresult ->                               _ <- lift $ rundb $ replace demoid  demoresult                              redirect demonewr                   _ -> lift $  defaultlayout $                              [whamlet|                               <form method=post>                                     ^{widget}                                     <div>                                           <input type=submit>                         |]

Comments

Post a Comment

Popular posts from this blog

node.js - Using Node without global install -

i'm working on few node & electron (atom shell) projects , i'm curious how them work without user having install node globally. i've seen few applications including node directory in project contains node.exe binary. how go setting node project use binary? edit: thought should add, i've searched everywhere answer this, unrelated results.
Read more

How to access a php class file from PHPFox framework into javascript code written in simple HTML file? -

i've website developed using phpfox v3.0.7 . now i'm trying implement 'sse(server sent events)' 1 of php files. reference i'm giving below necessary code part of file. file titled process.class.php , present @ location /var/www/module/notification/include/service/process.class.php present on server having ip http://34.124.40.142/ . <?php /** * [phpfox_header] */ header('content-type: text/event-stream'); header('cache-control: no-cache'); defined('phpfox') or exit('no dice!'); /** * * * @copyright [phpfox_copyright] * @author raymond benc * @package phpfox_service * @version $id: service.class.php 67 2009-01-20 11:32:45z raymond_benc $ */ class notification_service_process extends phpfox_service { /** * class constructor */ public function __construct() { $this->_stable = phpfox::gett('notification'); } public function add($...
Read more

java - Null response to php query in android, even though php works properly -

Image
table i'm trying retrieve above data using 2 php files below. want pass email parameter , return bets user = email. work fine when tested advanced rest client, problem not php. however, when try through android 2 java classes below, null pointer exception (logcat below) , json object returned null. i'm not sure error is, think i'm not passing parameter php , that's why it's producing null response. logcat 05-31 15:10:50.227 26074-26074/com.example.albert.betterapp e/androidruntime﹕ fatal exception: main process: com.example.albert.betterapp, pid: 26074 java.lang.runtimeexception: unable start activity componentinfo{com.example.albert.betterapp/com.example.albert.betterapp.displayallbets}: java.lang.nullpointerexception @ android.app.activitythread.performlaunchactivity(activitythread.java:2292) @ android.app.activitythread.handlelaunchactivity(activitythread.java:2350) @ android.app.activitythread.acce...
Read more