StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

POreturning JSON from ruby helper function to javascript
primarykey
Id
7739102
data
AcceptedAnswerId
0
AnswerCount
2
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2011-10-12T11:07:54.497
FavoriteCount
0
LastActivityDate
2011-10-13T05:48:39.457
LastEditDate
2011-10-12T12:23:35.720
LastEditorUserId
889302
OwnerUserId
889302
ParentId
0
PostTypeId
1
Score
0
ViewCount
1369
LastEditorDisplayName
text
Body
I have a Ruby on Rails application. On click of a button I have some AJAX calls that should return with JSON. Here are the relevant lines of code: File "index.js.erb": <pre><code>var myJson = <%= chart_data %>; </code></pre> File "parameter_helper.rb": <pre><code>module ParameterHelper def chart_data valRet1 = { :name => "Total Traffic", :data => [ ['Sep 9, 1970', 0], ['Sep 14, 1970', 0.94], ['Sep 20, 1970', 0.46] ] } valRet2 = [1, 2] return valRet1 end end </code></pre> The problem is that when I return valRet2 from chart_data, I get the required array in the index.js.erb file. But if I try returning valRet1, I get errors. I played around with ActiveSupport::JSON.encode, jQuery.parseJSON, converting my JSON object to string and escaping quotes etc. Nothing seems to work. The following resulted in errors: <pre><code>return '[["Sep 9, 1970", 0], ["Sep 14, 1970", 0.94], ["Sep 20, 1970", 0.46]]' </code></pre> The following also resulted in errors: <pre><code>result = [['Sep 9, 1970', 0], ['Sep 14, 1970', 0.94], ['Sep 20, 1970', 0.46]] return '"' + ActiveSupport::JSON.encode(result) + '"' </code></pre> The following returned correctly: <pre><code>return "[['Sep 9, 1970', 0], ['Sep 14, 1970', 0.94], ['Sep 20, 1970', 0.46]]" </code></pre> The array (preferably hash) needs to be made on the fly (taking values from database) and hence cannot be a literal as in the case of correctly returned data above. Help will be appreciated. Environment: <pre><code>OS: Windows 7 Rails: 3.1.0 Ruby: 1.9.2p290 (2011-07-09) [i386-mingw32] </code></pre> Regards, Imtiaz
Tags
<javascript><ruby-on-rails><ruby><json><helper>
Title
returning JSON from ruby helper function to javascript
singulars
PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USimtiaz
UserOwnerUserId
1. USimtiaz
plurals
PostLinksPostIdRelatedPostId
1. PL
 singulars
 LinkTypeLinkTypeId
 LTLinked
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
2. PO
 singulars
 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
1. This table or related slice is empty.
CommentsPostId
1. This table or related slice is empty.

Querying!

Guidance

A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.