Rails, same piece of code won't work with 3.2 -

-

so have on erb:

<%= fields_for camera, :index =>camera.id |field|%> <%= field.check_box :alertflag %>

and on controller:

 @camera = camera.update(params[:camera].keys, params[:camera].values)

and works on 1 server have rails 3.0.9, reason doesn't work same way on 1 server have rails 3.2.

the params hash on 3.0.9:

camera%5b10%5d%5balertflag%5d=0

on 3.2:

camera%5balertflag%5d=0

so index missing.

the index option supported in both rails versions. when comparing source code of formhelper module in 2 rails versions becomes clear fields_for method signature has changed from:

def fields_for(record_or_name_or_array, *args, &block)

in rails 3.0, to

def fields_for(record_name, record_object = nil, fields_options = {}, &block)

in rails 3.2.

so if need pass options (e.g. index), must pass the 3rd argument method now, following should work:

<%= fields_for :camera, camera, :index => camera.id |field| %>

Comments

Post a Comment

Popular posts from this blog

ios - Memory not freeing up after popping viewcontroller using ARC -

-
hi project arc based, using uinavigationcontroller make transition between viewcontroller. using profiler analyse happening behind scene memory. noticed when push viewcontroller allocate memory components , when pop not freeing allocated memory. since using arc unable implement dealloc or release component. have analysed in detail , there no memory leak in project. i not using strong property push viewcontroller. here how pushing viewcontroller. viewcontroller *obj = [[viewcontroller alloc] init]; [self.navigationcontroller pushviewcontroller:obj animated:no]; any clue whats going on? should free memory have consumed. please advise your description indicates have retain cycle, leads objects not being deallocated. typical source of retain cycles properties assigned loading nib files (usually declared iboutlet ). two strategies break them , release objects: declare property weak : @property (nonatomic, weak) iboutlet uilabel *statuslabel; set property nil in...
Read more

mouseevent - Catch mouse event on tree widget item in QTreeWidget -

-
in tree widget have following signal connected: connect(mtreewidget, signal(itemclicked(qtreewidgetitem*, int)), slot(onitemclicked(qtreewidgetitem*, int))); where onitemclicked() slot following: void widgetbox::onitemclicked(qtreewidgetitem *item, int ) { int index = getpageindex(item); setcurrentindex(index); } int widgetbox::getpageindex(qtreewidgetitem *item) { if (!item) return -1; qtreewidgetitem *parent = item->parent(); if(parent) // parent top level item { return mtreewidget->indexoftoplevelitem(parent); } else // current item top level { return item->treewidget()->indexoftoplevelitem(item); } } void widgetbox::setcurrentindex(int index) { if (index != currentindex() && checkindex(index)) { mtreewidget->setcurrentitem(mtreewidget->toplevelitem(index)); emit currentindexchanged(index); } } however can't catch itemclicked() signal , onitemclicked() never executed because...
Read more

Java JSoup error fetching URL -

-
i'm creating application enable me fetch values specific website console. value <span> element , i'm using jsoup . my challenge has error: error fetching url here java code: public class testsl { public static void main(string[] args) throws ioexception { document doc = jsoup.connect("https://stackoverflow.com/questions/11970938/java-html-parser-to-extract-specific-data").get(); elements spans = doc.select("span[class=hidden-text]"); (element span: spans) { system.out.println(span.text()); } } } and here error on console: exception in thread "main" org.jsoup.httpstatusexception: http error fetching url. status=403, url= java html parser extract specific data? @ org.jsoup.helper.httpconnection$response.execute(httpconnection.java:590) @ org.jsoup.helper.httpconnection$response.execute(httpconnection.java:540) @ org.jsoup.helper.httpconnection.execute...
Read more