I'm using ActiveResource to establish a REST connection with rails 4.2 to an ADS Advantage server using the WebPlatform from ADS. It returns json with "__metadata". How can I remove the "__metadata"?
{
"__metadata": {
"uri": "http://.....",
"key_fields": "ID",
"rows_affected": 0,
"last_autoinc": 0
},
In my class I have added self.include_format_in_path = false, to remove the .json from the end of the uri.
Thanks.
you can achieve this in the following steps:
parse the JSON:
parsed_json = JSON.parse('{ "__metadata": { "uri": "http://.....", "key_fields": "ID", "rows_affected": 0, "last_autoinc": 0 }}')
then you will get a hash type and you just need to get the inside of __metadata:
result = parsed_json['__metadata']
then you can just return it or print it:
puts result.to_json
#=> {"uri"=>"http://.....", "key_fields"=>"ID", "rows_affected"=>0, "last_autoinc"=>0}
Related
I'm trying to combine requests from two services in one endpoint.
The first returns the list of users, like this:
{
"data": [
{ "id": 1, "name": "first", "photo": "employee_photos/key1.png" },
{ "id": 2, "name": "second", "photo": null },
{ "id": 3, "name": "third", "photo": "employee_photos/key3.png" }
]
}
The second is supposed to receive the POST request with the JSON listing photo keys to get the required version URLs.
Request:
{
"keys": [ "employee_photos/key1.png", "employee_photos/key3.png" ],
"versions": [ "small", "large" ]
}
I created a small Lua script to process the response of the first request and collect the list of keys. It looks like this:
function post_employees(request, employeesResponse)
local resp = employeesResponse.load()
local data = resp:data():get("data")
local photo_keys = {}
for i = 0, data:len() - 1, 1 do
local rec = data:get(i)
local id = rec:get("id")
local photo = rec:get("photo")
if photo then
table.insert(photo_keys, photo)
end
end
resp:data():set("photos", table.concat(photo_keys, ","))
end
But then... I can't find a way to use this list of keys in the second request. Is it even possible?
I'm using a Ruby script to interface with an application API and the results being returned are in a JSON format. For example:
{
"incidents": [
{
"number": 1,
"status": "open",
"key": "abc123"
}
{
"number": 2,
"status": "open",
"key": "xyz098"
}
{
"number": 3,
"status": "closed",
"key": "lmn456"
}
]
}
I'm looking to search each block for a particular "key" value (yzx098 in this example) and return the associated "number" value.
Now, I'm very new to Ruby and I'm not sure if there's already a function to help accomplish this. However, a couple days of scouring the Googles and Ruby resource books hasn't yielded anything that works.
Any suggestions?
First of all, the JSON should be as below: (note the commas)
{
"incidents": [
{
"number": 1,
"status": "open",
"key": "abc123"
},
{
"number": 2,
"status": "open",
"key": "xyz098"
},
{
"number": 3,
"status": "closed",
"key": "lmn456"
}
]
}
Strore the above json in a variable
s = '{"incidents": [{"number": 1,"status": "open","key": "abc123"},{"number": 2,"status": "open","key": "xyz098"},{"number": 3,"status": "closed","key": "lmn456"}]}'
Parse the JSON
h = JSON.parse(s)
Find the required number using map
h["incidents"].map {|h1| h1['number'] if h1['key']=='xyz098'}.compact.first
Or you could also use find as below
h["incidents"].find {|h1| h1['key']=='xyz098'}['number']
Or you could also use select as below
h["incidents"].select {|h1| h1['key']=='xyz098'}.first['number']
Do as below
# to get numbers from `'key'`.
json_hash["incidents"].map { |h| h['key'][/\d+/].to_i }
json_hash["incidents"] - will give you the value of the key "incidents", which is nothing but an array of hash.
map to iterate thorough each hash and collect the value of 'key'. Then applying Hash#[] to each inner hash of the array, to get the value of "key". Then calling str[regexp], to get only the number strings like '098' from "xyz098", finally applying to_i to get the actual integer from it.
If the given hash actually a json string, then first parse it using JSON::parse to convert it to a hash.Then do iterate as I said above.
require 'json'
json_hash = JSON.parse(json_string)
# to get values from the key `"number"`.
json_hash["incidents"].map { |h| h['number'] } # => [1, 2, 3]
# to search and get all the numbers for a particular key match and take the first
json_hash["incidents"].select { |h| h['key'] == 'abc123' }.first['number'] # => 1
# or to search and get only the first number for a particular key match
json_hash["incidents"].find { |h| h['key'] == 'abc123' }['number'] # => 1
After creating a customer successfully, I can inspect the object with:
Rails.logger.debug("single card object has: #{customer.cards.data.card.inspect}")
which returns a json like this:
#<Stripe: : Customer: 0x2801284>JSON: {
"id": "cus_2WXxmvhBJgSmNY",
"object": "customer",
"cards": {
"object": "list",
"data": [
{
"id": "card_2WXxcCsdY0Jjav",
"object": "card",
"last4": "4242",
"type": "Visa",
"exp_month": 1,
"exp_year": 2014,
}
]
},
"default_card": "card_2WXxcCsdY0Jjav"
}
But I will do Customer.cards.data.last4 it gives a NOMethodError.
If I remove the last4 and just call Customer.cards.data, it gives
#<Stripe: : Card: 0x1ed7dc0>JSON: {
"id": "card_2Wmd80yQ76XZKH",
"object": "card",
"last4": "4242",
"type": "Visa",
"exp_month": 1,
"exp_year": 2015,
}
Now I seem to have the direct card object but if I do
card = Customer.cards.data
self.last4 = card.last4
I still get a noMethodError
Here is shortened version of my model:
class Payment < ActiveRecord::Base
def create_customer_in_stripe(params)
if self.user.stripe_card_token.blank?
user_email = self.user.email
customer = Stripe::Customer.create(email: user_email, card: params[:token])
card = customer.cards.data
self.card_last4 = card.last4
self.card_type = card.type
self.card_exp_month = card.exp_month
self.card_exp_year = card.exp_year
self.user.save
end
self.save!
end
end
customer.cards, as the name implies, returns multiple cards in an array.
You can't call card accessor methods because you don't have a Stripe::Card object; you have an array of Stripe::Card objects. You need to either call customer.cards.first (the most likely answer) or iterate over the array for a specific card you're looking for.
Once you have a Stripe::Card object, all the accessor methods will work correctly.
cself.card_last4 = card.last4 should be self.card_last4 = card["last4"] as the gem itself doesn't have a last4 method when searching on github. I know i have to use Hash syntax.
I have a feeling that all of your methods on card will need this syntax.
EDit:
So it sounds like your model's last4 column is an integer, do card["last4"].to_i or change the migration to a string column in the DB.
card = Customer.cards.data
self.last4 = card[0].last4
how do you get the default active card in
rails "default_card": "card_2WXxcCsdY0Jjav" in the list of customer.cards?
is there a better way rather than to loop thru customer.cards to get it or even easier way?
Any pointers?
Hope this help someone who is wondering as well :- )
default_active_card = customer.cards.data.detect{|obj| obj[:id] == customer.default_card}
I need to extract some data from a JSON response i'm serving up from curb.
Previously I wasn't calling symbolize_keys, but i thought that would make my attempt work.
The controller action:
http = Curl.get("http://api.foobar.com/thing/thing_name/catalog_items.json?per_page=1&page=1") do|http|
http.headers['X-Api-Key'] = 'georgeBushSucks'
end
pre_keys = http.body_str
#foobar = ActiveSupport::JSON.decode(pre_keys).symbolize_keys
In the view (getting undefined method `current_price' )
#foobar.current_price
I also tried #foobar.data[0]['current_price'] with the same result
JSON response from action:
{
"data": {
"catalog_items": [
{
"current_price": "9999.0",
"close_date": "2013-05-14T16:08:00-04:00",
"open_date": "2013-04-24T11:00:00-04:00",
"stuff_count": 82,
"minimum_price": "590000.0",
"id": 337478,
"estimated_price": "50000.0",
"name": "This is a really cool name",
"current_winner_id": 696969,
"images": [
{
"thumb_url": "http://foobar.com/images/93695/thumb.png?1365714300",
"detail_url": "http://foobar.com/images/93695/detail.png?1365714300",
"position": 1
},
{
"thumb_url": "http://foobar.com/images/95090/thumb.jpg?1366813823",
"detail_url": "http://foobar.com/images/95090/detail.jpg?1366813823",
"position": 2
}
]
}
]
},
"pagination": {
"per_page": 1,
"page": 1,
"total_pages": 131,
"total_objects": 131
}
}
Please note that accessing hash's element in Rails work in models. To use it on hash, you have to use OpenStruct object. It's part of standard library in rails.
Considering, #foobar has decoded JSON as you have.
obj = OpenStruct.new(#foobar)
obj.data
#=> Hash
But, note that, obj.data.catalog_items willn't work, because that is an hash, and again not an OpenStruct object. To aid this, we have recursive-open-struct, which will do the job for you.
Alternative solution [1]:
#foobar[:data]['catalog_items'].first['current_price']
But, ugly.
Alternative solution [2]:
Open Hash class, use method_missing ability as :
class Hash
def method_missing(key)
self[key.to_s]
end
end
Hope it helps. :)
So I am basically trying to write rspec to test my json results:
patient_allergies = patient.patient_allergies
expect(response_body['allergies'].size).to eq(patient_allergies.size)
patient_allergies.each_with_index do |allergy, index|
expect(response_body['allergies'][index]['name']).to eq(allergy.name)
allergy.patient_allergy_reactions.each_with_index do |reaction, index|
expect(response_body['reactions'][index]['name']).to eq(reaction.name)
end
end
My tables above are patient_allergies and patient_allergy_reactions.
The above tests work fine. But the problem is I am comparing by index.
If the order of the json changes, the test would fail. Is there a better way to write tests for this?
my json looks like this:
"allergies": [
{
"name": "Allergy1",
"reactions": [
]
},
{
"name": "Allergy2",
"reactions": [
{
"name": "Reaction1",
"severity": "Medium"
}
]
}
],
Use detect and the include matcher to help you out here:
patient_allergies = patient.patient_allergies
response_allergies = response['allergies'] || []
expect(response_allergies.size).to eq(patient_allergies.size)
patient_allergies.each |allergy| do
response_allergy = response_allergies.detect{|a| a['name'] == allergy.name}
expect(response_allergy).to_not be_nil
patient_reactions = allergy.patient_allergy_reactions
response_reactions = (response_allergy['reactions'] || []).map{|r| r['name']}
expect(response_reactions.size).to eq(patient_reactions.size)
expect(response_reactions).to include(*patient_reactions.map(&:name))
end