Drop Readout.value decimal type in favor of float

db/migrate/20250121230456_create_readouts.rb

@@ -3,8 +3,10 @@ class CreateReadouts < ActiveRecord::Migration[7.2]
     create_table :readouts do |t|
       t.references :user, null: false, foreign_key: true
       t.references :quantity, null: false, foreign_key: true
+      # :category + :value + :unit as a separate table? (NumericValue, TextValue)
+      t.integer :category, null: false, default: 0
+      t.float :value, null: false, limit: Float::MANT_DIG
       t.references :unit, foreign_key: true
-      t.decimal :value, null: false, precision: 30, scale: 15
       #t.references :collector, foreign_key: true
       #t.references :device, foreign_key: true
 

db/schema.rb

@@ -28,8 +28,9 @@ ActiveRecord::Schema[7.2].define(version: 2025_01_21_230456) do
   create_table "readouts", charset: "utf8mb4", collation: "utf8mb4_0900_as_ci", force: :cascade do |t|
     t.bigint "user_id", null: false
     t.bigint "quantity_id", null: false
+    t.integer "category", default: 0, null: false
+    t.float "value", limit: 53, null: false
     t.bigint "unit_id"
-    t.decimal "value", precision: 30, scale: 15, null: false
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
     t.index ["quantity_id", "created_at"], name: "index_readouts_on_quantity_id_and_created_at", unique: true