In Rails, I'd like to parse an array like below to JSON:
[{:title=>"eltitulo", :start=>"2014-06-12", :end=>"2014-06-14"}]
I have tried to use @myarray.to_json. How can I do it?
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The to_json will do the conversion from ruby to json. I can't quite get what your problem is.nickcen– nickcen2014-06-24 14:20:02 +00:00Commented Jun 24, 2014 at 14:20
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1 Answer
It sounds like you want a JSON representation of a ruby array. You're on the right track with calling .to_json.
[1] pry(main)> a = [{:title=>"eltitulo", :start=>"2014-06-12", :end=>"2014-06-14"}]
=> [{:title=>"eltitulo", :start=>"2014-06-12", :end=>"2014-06-14"}]
[2] pry(main)> a.to_json
=> "[{\"title\":\"eltitulo\",\"start\":\"2014-06-12\",\"end\":\"2014-06-14\"}]"
As you can see my .to_json call has turned the ruby array into a JSON string. Now if you want to get this JSON string into JavaScript you'll need to output it into your script block with ERB:
<script type="text/javascript">
my_objects = jQuery.parseJSON(<%=raw @myarray.to_json %>);
</script>
The jQuery.parseJSON() bit assume you're using jQuery, and comes from this StackOverlfow post.
You may also want to look into using e.g. the gon gem for passing data from your controller into your javascript.
3 Comments
user3402629
Thanks, my friend. I finally did it. I post my code now.
pdobb
You're welcome. If this solution worked for you, please accept the answer so others know the question is answered.
rubyprince
I think this code
my_objects = jQuery.parseJSON(<%=raw @myarray.to_json %>); will be converted to something like this: my_objects = jQuery.parseJSON([{"title":"eltitulo","start":"2014-06-12","end":"2014-06-14"}]);. So, if the string is safe (no user input part in it), you can use my_objects = <%=raw @myarray.to_json %>; or you can use my_objects = jQuery.parseJSON(<%=raw @myarray.to_json.inspect %>);