fix params

app/controllers/patrons_controller.rb

@@ -23,9 +23,9 @@ module DiscoursePatrons
           amount: param_currency_to_number,
           currency: SiteSetting.discourse_patrons_currency,
           payment_method_types: ['card'],
-          payment_method: params[:paymentMethodId],
+          payment_method: params[:payment_method_id],
           description: SiteSetting.discourse_patrons_payment_description,
-          receipt_email: params[:receiptEmail],
+          receipt_email: params[:receipt_email],
           confirm: true,
         )
 

app/models/payment.rb

@@ -0,0 +1,4 @@
+# frozen_string_literal: true
+
+class Payment < ActiveRecord::Base
+end

assets/javascripts/discourse/components/donation-form.js.es6

@@ -33,9 +33,9 @@ export default Ember.Component.extend({
 
     confirmStripeCard() {
       const data = {
-        paymentMethodId: this.confirmation.id,
+        payment_method_id: this.confirmation.id,
         amount: this.amount,
-        receiptEmail: this.receiptEmail
+        receipt_email: this.receiptEmail
       };
 
       this.stripePaymentHandler(data).then(paymentIntent => {

db/migrate/20190913010928_create_payments_table.rb

@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+class CreatePaymentsTable < ActiveRecord::Migration[5.2]
+  def change
+    def change
+      create_table :payments do |t|
+        t.integer :payment_intent_id, null: false
+        t.string :receipt_email, null: false
+        t.string :url, null: false
+        t.integer :amount, null: false
+        t.timestamps
+      end
+
+      add_index :payments, [:payment_intent_id], unique: true
+    end
+  end
+end

plugin.rb

@@ -32,7 +32,6 @@ after_initialize do
     "../app/models/payment",
   ].each { |path| require File.expand_path(path, __FILE__) }
 
-
   Discourse::Application.routes.append do
     mount ::DiscoursePatrons::Engine, at: 'patrons'
   end

spec/controllers/discourse_patrons/patrons_controller_spec.rb

@@ -39,6 +39,13 @@ module DiscoursePatrons
         expect(response).to have_http_status(200)
       end
 
+      xit 'creates a payment' do
+        ::Stripe::PaymentIntent.expects(:create)
+        expect {
+          post :create, params: { receipt_email: 'hello@example.com', amount: '20.00' }, format: :json
+        }.to change { Payment.count }
+      end
+
       it 'has the correct amount' do
         ::Stripe::PaymentIntent.expects(:create).with(has_entry(:amount, 2000))
         post :create, params: { amount: '20.00' }, format: :json
@@ -59,7 +66,13 @@ module DiscoursePatrons
 
       it 'has a receipt email' do
         ::Stripe::PaymentIntent.expects(:create).with(has_entry(:receipt_email, 'hello@example.com'))
-        post :create, params: { receiptEmail: 'hello@example.com' }, format: :json
+        post :create, params: { receipt_email: 'hello@example.com' }, format: :json
+        expect(response).to have_http_status(200)
+      end
+
+      it 'has a payment method' do
+        ::Stripe::PaymentIntent.expects(:create).with(has_entry(:payment_method, 'xyz-1234'))
+        post :create, params: { payment_method_id: 'xyz-1234' }, format: :json
         expect(response).to have_http_status(200)
       end