Loop to create JSON object

Question

just trying to loop thru my Story model.. and create JSON object and insert it into Call and send it.. But i'm not sure how to loop thru Stories..

I've done this:

@stories = Array.new

Story.where(newsletter_id: current_user.selected_newsletter) do |story|
 @stories << {
   :title => story.title,
   :image_url => story.image_url
 }
end

and i'm trying ti insert the loop to this JSON OBJECT

"message" => {
   "attachment" => {
      "type" => "template",
      "payload" => {
        "template_type" => "generic",
        "elements" => [{this is the array}]
      }
   }
}

The array with multiple stories should looks like this:

[
  {
  "title" => "title....1",
  "image" => "image....1"
  },
  {
  "title" => "title....2",
  "image" => "image....3"
  }
  ....
]

souslov · Accepted Answer · 2016-07-08 19:54:06Z

3

Try the following:

@stories = Story.where(newsletter_id: current_user.selected_newsletter)
                .select(:title, 'image_url as image').as_json(except: :id)

And then:

{
  "message" => {
    "attachment" => {
      "type" => "template",
      "payload" => {
        "template_type" => "generic",
        "elements" => @stories
      }
    }
  }
}

edited Jul 8, 2016 at 19:54

answered Jul 8, 2016 at 18:54

souslov

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4 Comments

liborza Over a year ago

Right, i tried that like that and it wont make the call.. i think its because the array is with ids and there should be just a title and image : {"id"=>nil, "title"=>"...", "image_url"=>"..."}.. thats what i get but the array is perfect thanks for that a lot!

souslov Over a year ago

@LiborZahrádka: there are just title and image_url. Do you need it to be image or image_url?

liborza Over a year ago

U are right.. i have to make a call with image but in db im saving it as image_url

liborza Over a year ago

Any idea how to exclude id attr from that array? Because even when i dont selected id the id is still there as nil value

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