Mapping JSON Response to Model - ruby-on-rails

Question

New to the notion of Rails mapping, and would love to get some help on this from the stack overflow community.
Currently I have this JSON response from the Embedly API and don't really know how to map it to my very simple 'posts' model. I'm trying to get the image/title/url from the JSON response and map it into my database in the relevant fields, so in the JSON response below these would be 'original_url', 'image' and 'title'.
{
"provider_url": "http://piccsy.com",
"authors": [],
"provider_display": "piccsy.com",
"related": [],
"favicon_url": "http://piccsy.com/favicon.ico",
"keywords": [],
"app_links": [],
"original_url": "http://piccsy.com/2015/02/rihanna-sharks-harpers-bazaar-march-2015-photoshoot3",
"media": {},
"content": null,
"entities": [],
"provider_name": "Piccsy",
"type": "html",
"description": "Beautiful, inspirational and creative images from Piccsy. Thousands of Piccs from all our streams, for you to browse, enjoy and share with a friend.",
"embeds": [],
"images": [
{
"width": 728,
"url": "http://img2.piccsy.com/cache/images/56/8f/bed__396d8_cecf850824130_99f-post.jpg",
"height": 1092,
"caption": null,
"colors": [
{
"color": [
190,
211,
212
],
"weight": 0.3095703125
},
{
"color": [
114,
159,
171
],
"weight": 0.247314453125
},
{
"color": [
0,
52,
68
],
"weight": 0.244140625
},
{
"color": [
25,
99,
117
],
"weight": 0.198974609375
}
],
"entropy": 5.94797179868,
"size": 318918
},
{
"width": 200,
"url": "http://piccsy.com/piccsy/images/layout/logo/e02f43.200x200.jpg",
"height": 200,
"caption": null,
"colors": [
{
"color": [
215,
51,
67
],
"weight": 0.701904296875
},
{
"color": [
250,
252,
252
],
"weight": 0.298095703125
}
],
"entropy": 0.686638083774,
"size": 18691
}
],
"safe": true,
"offset": null,
"cache_age": 86065,
"lead": null,
"language": null,
"url": "http://piccsy.com/2015/02/rihanna-sharks-harpers-bazaar-march-2015-photoshoot3",
"title": "Rihanna-sharks-harpers-bazaar-march-2015-photoshoot3",
"favicon_colors": [
{
"color": [
208,
37,
38
],
"weight": 0.000244140625
},
{
"color": [
0,
0,
0
],
"weight": 0.000244140625
}
],
"published": null
}
My posts model contains very simple name, url and image fields which are all accepting strings. Any help on mapping this to a model would be brilliant, up till now I've only done very simple JSON responses and this one is a bit out of my league.
Thanks for your time.

Answer 1

You can just parse json response, and get required fields from it
json_response = '{your json response from api}'
response_hash = JSON.parse(json_response)
MyModel.create!(url: response_hash[:original_url], title: response_hash[:title])
But there is problem with images, response contains multiple images, so probably you should have ImageModel that belongs to MyModel, and MyModel has_many ImageModels.
Then you can do:
model = MyModel.create!(url: response_hash[:original_url], title: response_hash[:title])
response_hash[:images].each do |image|
model.images.create!(url: image[:url])
end