Introduce LaSalesRange model and data

Import using the new rake task which mimics La Rent Range import from csv

rake data_import:sales_ranges\[2022,"/Users/mohseeadmin/development/submit-social-housing-lettings-and-sales-data/config/sales_range_data/2022.csv"\]
"Created/updated 1328 LA Sales Range records"

app/models/la_sales_range.rb

@@ -0,0 +1,2 @@
+class LaSalesRange < ApplicationRecord
+end

db/migrate/20221016203810_create_la_sales_ranges.rb

@@ -0,0 +1,15 @@
+class CreateLaSalesRanges < ActiveRecord::Migration[7.0]
+  def change
+    create_table :la_sales_ranges do |t|
+      t.string :la
+      t.string :la_name
+      t.integer :beds
+      t.integer :soft_min, null: false
+      t.integer :soft_max, null: false
+      t.integer :start_year, null: false
+
+      t.index %i[start_year beds la], unique: true
+      t.timestamps
+    end
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.0].define(version: 2022_10_07_093606) do
+ActiveRecord::Schema[7.0].define(version: 2022_10_16_203810) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
@@ -42,6 +42,18 @@ ActiveRecord::Schema[7.0].define(version: 2022_10_07_093606) do
     t.index ["start_year", "lettype", "beds", "la"], name: "index_la_rent_ranges_on_start_year_and_lettype_and_beds_and_la", unique: true
   end
 
+  create_table "la_sales_ranges", force: :cascade do |t|
+    t.string "la"
+    t.string "la_name"
+    t.integer "beds"
+    t.integer "soft_min", null: false
+    t.integer "soft_max", null: false
+    t.integer "start_year", null: false
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["start_year", "beds", "la"], name: "index_la_sales_ranges_on_start_year_and_beds_and_la", unique: true
+  end
+
   create_table "legacy_users", force: :cascade do |t|
     t.string "old_user_id"
     t.integer "user_id"

lib/tasks/sales_ranges.rake

@@ -0,0 +1,27 @@
+require "csv"
+
+namespace :data_import do
+  desc "Import annual sales range data"
+  task :sales_ranges, %i[start_year path] => :environment do |_task, args|
+    start_year = args[:start_year]
+    path = args[:path]
+    count = 0
+
+    raise "Usage: rake data_import:sales_ranges[start_year,'path/to/csv_file']" if path.blank? || start_year.blank?
+
+    CSV.foreach(path, headers: true) do |row|
+      LaSalesRange.upsert(
+        {
+          beds: row["beds"],
+          start_year: start_year,
+          la: row["la"],
+          soft_min: row["soft_min"],
+          soft_max: row["soft_max"]
+        },
+        unique_by: %i[start_year beds la],
+      )
+      count += 1
+    end
+    pp "Created/updated #{count} LA Sales Range records" unless Rails.env.test?
+  end
+end