CODEWITHSUNDEEP
ruby-on-railsjson
coderVishal
coderVishal

Reputation: 9109

Appending to Json Array in ruby on rails

I am working with backbone.js as front end that receives a json result from controller like this 

def index
    myEntry = Entry.all
    respond_with myEntry.to_json()
end

The resulting json arrays is collection of objects as follows 

0:Object
  id:1
  name:matz
1:object
  id:2
  name: hilary

Now i have for each name an extra tag field that is stored using act-as-taggable-on gem. To access the tag of any entry i would have to use Entry.find(1).tag_list. I would like to append the result of each tag to its respective object from above, to get result something like this 

0:Object
  id:1
  name:matz
  tag:friend,rich
1:object
  id:2
  name: hilary
  tag:intelligent

Upvotes: 3

Views: 2347

Answers (2)

coderVishal
coderVishal

Reputation: 9109

Perfect answer from @dimakura. But if you wanted to include something to your json array that was somehow not directly connected to your result, or for more complex reasons, here is another way

  • Create an empty array
  • Loop through your result array
    • In each of loop append to the array your required hash value
  • Return array converted into json

Example Code

myEntry = Entry.all
myhash = []
myEntry.each do |index|
   myhash << {name: index.name,tag_list: index.tag_list}
end

respond_with myhash.to_json

Upvotes: 2

dimakura
dimakura

Reputation: 7655

This should work for you:

render json: User.all.to_json(include: :tags)

or alternatively (just tag names):

render json: User.all.to_json(methods: :tag_list)

Upvotes: 2

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