Accept a basic create request with JSON params

app/controllers/case_logs_controller.rb

@@ -5,8 +5,11 @@ class CaseLogsController < ApplicationController
   end
 
   def create
-    @case_log = CaseLog.create!
+    @case_log = CaseLog.create!(create_params)
-    redirect_to @case_log
+    respond_to do |format|
+      format.html { redirect_to @case_log }
+      format.json { render json: @case_log }
+    end
   end
 
   # We don't have a dedicated non-editable show view
@@ -66,4 +69,10 @@ private
       result
     end
   end
+
+  def create_params
+    return {} unless params.dig(:case_log)
+
+    params.require(:case_log).permit(CaseLog.new.attributes.keys)
+  end
 end

spec/requests/case_log_controller_spec.rb

@@ -0,0 +1,44 @@
+require 'rails_helper'
+
+RSpec.describe CaseLogsController, type: :request do
+  describe "POST #create" do
+    let(:headers) do
+      {
+       "Content-Type" => "application/json",
+       "ACCEPT" => "application/json"
+      }
+    end
+
+    let(:tenant_code) { "T365" }
+    let(:tenant_age) { 35 }
+    let(:property_postcode) { "SE11 6TY" }
+
+    let(:params) do
+      {
+        "tenant_code": tenant_code,
+        "tenant_age": 35,
+        "property_postcode": property_postcode
+      }
+    end
+
+    before do
+      post "/case_logs", headers: headers, params: params.to_json
+    end
+
+    it "returns http success" do
+      expect(response).to have_http_status(:success)
+    end
+
+    it "returns a serialized Case Log" do
+      json_response = JSON.parse(response.body)
+      expect(json_response.keys).to match_array(CaseLog.new.attributes.keys)
+    end
+
+    it "creates a case log with the values passed" do
+      json_response = JSON.parse(response.body)
+      expect(json_response["tenant_code"]).to eq(tenant_code)
+      expect(json_response["tenant_age"]).to eq(tenant_age)
+      expect(json_response["property_postcode"]).to eq(property_postcode)
+    end
+  end
+end