Inlined array elements with JBuilder

Question

How do you create an array with elements in it using Jbuilder without setting it to a variable first?

I want to end up with the following while using JBuilder

{
  "something": [
    { "name": "first", "foo": "bar"},
    { "name": "second", "foo": "baz"}
  ]
}

The only method I have found that works is the following.

json.something do
  something = [
    { name: 'first', foo: 'bar' },
    { name: 'second', foo: 'baz' }
  ]
  json.array! something do |item|
    json.(item, :name, :foo)
  end
end

Is there a way to make it look more like this?

json.array! 'something' do
  json.array do
    json.name 'first'
    json.foo 'bar'
  end
  json.array do
    json.name 'second'
    json.foo 'baz'
  end
end

score 18 · Answer 1 · edited Oct 15 '21 at 16:36

18

it turns out that jbuilder has built-in support for this kind of usage. You can use child! method in this way:

json.something do
  json.child! do
    json.name "first"  
    json.foo "bar"
  end
  json.child! do
    json.name "second"
    json.foo "barz"
  end
end

#=> 
{
  "something": [
    { "name": "first", "foo": "bar"},
    { "name": "second", "foo": "baz"}
  ]
}

it is much better, I think.

edited Oct 15 '21 at 16:36

rewritten

16,280
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answered Jul 21 '16 at 10:58

Carlosin

509
6
9

1

Just what i was loking for. – IvRRimUm Jan 09 '17 at 18:06

score 6 · Accepted Answer · answered Jun 27 '14 at 22:57

6

The only thing similar that I can imagine is use hardcoded hash:

json.something do
   json.array! [
     {name:'first',foo:'bar'},
     {name:'second',foo:'baz'}
   ]
end

answered Jun 27 '14 at 22:57

Ruby Racer

5,690
1
26
43

1

Pretty bad approach.. We are mixing json with jbuilder syntax. – IvRRimUm Jan 09 '17 at 18:05
@IvRRimUm this is a ruby hash, not json syntax. But thanks for the feedback. – Ruby Racer Jan 10 '17 at 04:47

Inlined array elements with JBuilder

2 Answers2