Hello from a Ruby on Rails beginner!
I've been trying to pass some data to a variable in Javascript by using
json. Seems like the Javascript variable doesn't receive the data
correctly.
This is the code in controller. @courses variable find the data from
database.
class CoursesController < ApplicationController
def index
@courses = Course.find(:all)
end
end
This is Javascript code in view.
<script type="text/javascript">
var markers=<%= @courses.to_json %>;
</script>
The following code show the data in browser with no problem. That means
<p><%= @courses.to_json %></p>
But the following code doesn't show data in browser right. The output is
a string of "undefined".
<script type="text/javascript">
var markers = <%= @courses.to_json %>;
for(i=0; i<markers.length; i++) {
document.write(markers[i].latitude, markers[i].longitude,
markers[i].name);
}
</script>
I don't know what goes wrong. Please help. Thank you in advance.
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