Stripe NoMethodError: undefined method `charges' for nil:NilClass in Rails Console

Question

I'm trying to have my app record successful charges from Stripe via Webhook. This is based on Chris Oliver's GoRails discussion on Stripe Webhooks. I'm using the Koudoku gem to establish the Stripe functionality. I'm running into an error when I try to load the JSON object into the Charges tables.

Here's the error that occurs when I try to record an event:

RecordCharges.new.call(event)
Subscription Load (0.3ms)  SELECT  "subscriptions".* FROM "subscriptions" WHERE "subscriptions"."stripe_id" = ? LIMIT 1  [["stripe_id", "cus_withheldforexample"]]
NoMethodError: undefined method `charges' for nil:NilClass

In my app, Users have one Subscriptions. Subscriptions have many Charges. Charges belong to Subscriptions.

Here's the schema:

create_table "charges", force: :cascade do |t|
t.string   "stripe_id"
t.string   "amount"
t.string   "card_last4"
t.string   "card_type"
t.string   "card_exp_month"
t.string   "card_exp_year"
t.datetime "created_at",      null: false
t.datetime "updated_at",      null: false
t.integer  "subscription_id"
end

create_table "subscriptions", force: :cascade do |t|
t.string   "stripe_id"
t.integer  "plan_id"
t.string   "last_four"
t.integer  "coupon_id"
t.string   "card_type"
t.float    "current_price"
t.integer  "user_id"
t.datetime "created_at",    null: false
t.datetime "updated_at",    null: false
end

My Stripe.rb file

class RecordCharges
def call(event)
    charge = event.data.object 
    subscription = Subscription.find_by(stripe_id: charge.customer)

    subscription.charges.create(
        stripe_id: charge.id,
        amount: charge.amount,
        card_last4: charge.source.last4,
        card_type: charge.source.brand,
        card_exp_month: charge.source.exp_month,
        card_exp_year: charge.source.exp_year 
        )
end
end

StripeEvent.configure do |events|
events.subscribe 'charge.succeeded', RecordCharges.new
end

Any suggestions? Thanks!

Answer 1

Subscription.find_by(stripe_id: charge.customer) is coming back nil. Either your charge doesn't have a customer and/or you don't have a Subscription by that stripe_id .

If you do a find_by! your app will raise an appropriate error and if your app is set up correctly it will 404 in production.