Rails ERB: radio_button_tag not generated -

-

i have erb contains line:

hello <% radio_button_tag "a", "b" %> world

problem: output hello world. no radio button generated.

what problem?

you forget equal sign:

hello <%= radio_button_tag "a", "b" %> world

Comments

Post a Comment

Popular posts from this blog

php - How can I edit my code to echo the data of child's element where my search term was found in, in XMLReader? -

-
i new in xmlreader, , think kind of hard find tutorials/code or advanced examples. question how can transform code have now, if search (through form) term jquery give me opportunity output value of <info></info> (and later other elements) in every <name></name> found in ? this code output names of books. <?php $reader = new xmlreader(); $reader->open("books.xml"); while ($reader->read()) { switch ($reader->nodetype) { case (xmlreader::element): if ($reader->localname == "name") { $reader->read(); echo $reader->value; break; }}} ?> the xml file <?xml version="1.0" encoding="iso-8859-1"?> <library> <book isbn="781"> <name>scjp 1.5</name> <info>sun certified java programmer book</info> </book> <bo...
Read more

javascript - Iterate over array and calculate average values of array-parts -

-
i have array this: ["2011-06-16 16:37:20",23.2], ["2011-06-21 16:37:20",35.6], ["2011-06-26 16:37:20",41.8], ["2011-07-01 16:37:20",25], ["2011-07-06 16:37:20",22.8], ["2011-07-11 16:37:20",36.4], ["2011-07-16 16:37:20",34], ["2011-07-21 16:37:20",20] [...] format: [$date,count] now need add 3rd 4th value every array element, average of n counts before or after. example if n=3 the 3rd value should average of 3 count-values before , 4th value should average of 3 count-values after current array element. result that: ["2011-06-16 16:37:20",23.2, null, 34.13], ["2011-06-21 16:37:20",35.6, null, 29.86], ["2011-06-26 16:37:20",41.8, null, 28.06], ["2011-07-01 16:37:20",25, 33.53, 31.06], ["2011-07-06 16:37:20",22.8, 34.13, 30.13], ["2011-07-11 16:37:20",36.4, 29.86, null], ["2011-07-16 16:37:20",34, 28.06, null], ["2...
Read more

iphone - Using nested NSDictionary with Picker -

-
newbie here, i have single component picker set plist, each item being array, multiple strings in each array app uses. currently plist structure this: nsdictionary -> nsarray -> nsstring | | items in picker data each item but now, want: nsdictionary -> nsdictionary -> nsarray -> nsstring | | | different picker data sets items in picker data each item so there multiple sets of picker components show using segmented control etc... i'm not sure if possible, , hoping save me making many different separate picker controllers. what has me stumped getting ingested properly this have now, builds crashes (debug info below): nsbundle *bundle = [nsbundle mainbundle]; nsstring *plistpath = [bundle pathforresource:@"camerasdatabase" oftype:@"plist"]; nsdictionary *dictionary = [[nsdictionary alloc] initwithcontentsoffi...
Read more