Froegin keys

db/migrate/20211020095206_create_jobs.rb

@@ -2,7 +2,7 @@ class CreateJobs < ActiveRecord::Migration[6.1]
   def change
     create_table :jobs do |t|
       t.json :params
-      t.string :type
+      t.string :job_type
 
       t.timestamps
     end

db/migrate/20211021061911_create_device_jobs.rb

@@ -1,11 +1,19 @@
 class CreateDeviceJobs < ActiveRecord::Migration[6.1]
   def change
-    create_table :device_jobs do |t|
+    create_table :device_jobs, id: false do |t|
+      # t.references :job_id, references: :job, foreign_key: true # the owner
+      # t.references :device_id, references: :device, foreign_key: true # the invitee
       t.integer :device_id
-      t.integer :jobs_id
+      t.integer :job_id
       t.string :status
 
       t.timestamps
     end
+    add_index :device_jobs, :job_id 
+    add_foreign_key :device_jobs, :jobs, column: :job_id
+    add_index :device_jobs, :device_id 
+    add_foreign_key :device_jobs, :devices, column: :device_id
+    # execute "ALTER TABLE device_jobs ADD PRIMARY KEY (device_id, jobs_id);"
   end
 end
+

db/schema.rb

@@ -10,11 +10,21 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2021_10_20_101118) do
+ActiveRecord::Schema.define(version: 2021_10_21_061911) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
+  create_table "device_jobs", id: false, force: :cascade do |t|
+    t.integer "device_id"
+    t.integer "job_id"
+    t.string "status"
+    t.datetime "created_at", precision: 6, null: false
+    t.datetime "updated_at", precision: 6, null: false
+    t.index ["device_id"], name: "index_device_jobs_on_device_id"
+    t.index ["job_id"], name: "index_device_jobs_on_job_id"
+  end
+
   create_table "devices", force: :cascade do |t|
     t.string "device_id"
     t.datetime "created_at", precision: 6, null: false
@@ -23,9 +33,11 @@ ActiveRecord::Schema.define(version: 2021_10_20_101118) do
 
   create_table "jobs", force: :cascade do |t|
     t.json "params"
-    t.string "type"
+    t.string "job_type"
     t.datetime "created_at", precision: 6, null: false
     t.datetime "updated_at", precision: 6, null: false
   end
 
+  add_foreign_key "device_jobs", "devices"
+  add_foreign_key "device_jobs", "jobs"
 end