Am i a total idiot to try and parse out a rails object for javascript
in this way?
<%
for i in interface_items[0].attributes
%>
var <%= i[0] %> = “<%=h( i[1] )%>”
<%
end
%>
Am I missing something really obvious?
Thanks,
Mark
–
A nicer way to do this would be to turn your object into JSON with
ruby-json:
gem install ruby-json
JSON is actually valid javascript so you can then do something like
this:
<%
require_gem ‘ruby-json’
%>
var data = <%= interface_items.to_json %>;
then the javascript varaible data would contain a representation of
the object which looks like it would be an array in this case.
Cheers,
Dan
On 2/10/06, M Daggett [email protected] wrote:
%>
Rails mailing list
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http://lists.rubyonrails.org/mailman/listinfo/rails
–
Dan W.
http://www.danwebb.net
On Thu, Feb 09, 2006 at 10:16:32PM -0800, M Daggett wrote:
} Am i a total idiot to try and parse out a rails object for javascript
} in this way?
}
} <%
} for i in interface_items[0].attributes
} %>
} var <%= i[0] %> = “<%=h( i[1] )%>”
} <%
} end
} %>
That should probably work, but you are also probably better off with
JSON
http://www.json.org/:
module IncludeThisInYourHelper
def obj_to_simple_JSON(obj)
q = ‘"’
json = ‘{ ’
for i in obj.attributes
#escape single quotes; a tag would also be bad
value = i[1].to_s.gsub(/’/, “‘+#{q}’#{q}+'”)
json << “'#{i[0]} : ‘#{value}’”
end
return json.sub(/, $/, ’ }')
end
end
…and in your .rhtml…
var myobject = <%= obj_to_simple_JSON %>;
} Am I missing something really obvious?
Just that it’s better to put such things in helpers, usually.
} Thanks,
} Mark
–Greg
On Fri, Feb 10, 2006 at 01:41:44PM +0000, Dan W. wrote:
} A nicer way to do this would be to turn your object into JSON with
ruby-json:
}
} gem install ruby-json
}
} JSON is actually valid javascript so you can then do something like
this:
} <%
} require_gem ‘ruby-json’
} %>
}
} var data = <%= interface_items.to_json %>;
}
} then the javascript varaible data would contain a representation of
} the object which looks like it would be an array in this case.
Oh, COOL! I thought I was being spiffy with my quickie JSON output, but
that’s much better. Thanks for bringing it to my (our) attention.
} Cheers,
} Dan
–Greg
Hey Dan and Gregory,
That was a great help. I was able to get access to my variables 20
seconds after I installed the GEM. Thanks so much for pointing me in
the right direction.
Mark
On 2/10/06, Dan W. [email protected] wrote:
} JSON is actually valid javascript so you can then do something like this:
that’s much better. Thanks for bringing it to my (our) attention.–
Dan W.
http://www.danwebb.net
Rails mailing list
[email protected]
http://lists.rubyonrails.org/mailman/listinfo/rails
–
It works straight out of the box on hashes and arrays but if you want
to serialize a whole object you need to make your own to_json method
but its not difficult.
On 2/10/06, Gregory S. [email protected] wrote:
} var data = <%= interface_items.to_json %>;
Rails mailing list
[email protected]
http://lists.rubyonrails.org/mailman/listinfo/rails
–
Dan W.
http://www.danwebb.net
Dan W. wrote:
It works straight out of the box on hashes and arrays but if you want
to serialize a whole object you need to make your own to_json method
but its not difficult.
There’s this AR->JSON function:
–
We develop, watch us RoR, in numbers too big to ignore.
On 2/10/06, Mark Reginald J. [email protected] wrote:
Dan W. wrote:
It works straight out of the box on hashes and arrays but if you want
to serialize a whole object you need to make your own to_json method
but its not difficult.There’s this AR->JSON function: BigBold - Informasi Tentang Bisnis dan Marketing
Extremely useful, as is the rest of this thread. I’ve been looking
all day - enough time to write a few JSON generators - for the easiest
way of turning some AR objects or simple hashes into simple JavaScript
(JSON).
Cheers to everyone who has carried solution into this thread,
- Rowan Rodrik