Feed the database with seed, and fix a foreign_key issue

db/migrate/20210413142821_create_activities.rb

@@ -4,7 +4,7 @@ class CreateActivities < ActiveRecord::Migration[6.1]
       t.string :name, index: true, null: false
       t.string :client
       t.string :description
-      t.references :author, null: false, foreign_key: { to_table: :users }
+      t.references :author, null: false
 
       t.timestamps
     end

db/schema.rb

@@ -33,5 +33,4 @@ ActiveRecord::Schema.define(version: 2021_04_13_142821) do
     t.index ["username"], name: "index_users_on_username", unique: true
   end
 
-  add_foreign_key "activities", "users", column: "author_id"
 end

db/seeds.rb

@@ -1,7 +1,20 @@
-# This file should contain all the record creation needed to seed the database with its default values.
-# The data can then be loaded with the bin/rails db:seed command (or created alongside the database with db:setup).
-#
-# Examples:
-#
-#   movies = Movie.create([{ name: 'Star Wars' }, { name: 'Lord of the Rings' }])
-#   Character.create(name: 'Luke', movie: movies.first)
+User.delete_all
+User.reset_pk_sequence
+Activity.delete_all
+Activity.reset_pk_sequence
+
+10.times do |i|
+  name = Faker::Name.first_name.downcase
+  user = User.create! username: "#{name}", email: "#{name}@email.com", password: "azerty"
+  puts "Created user ##{i} - #{user.username}"
+  
+  2.times do
+    activity = Activity.create!(
+      name: Faker::Science.element,
+      client: Faker::Company.name,
+      description: Faker::Company.catch_phrase,
+      author_id: user.id
+    )
+    puts "Created activity \"#{activity.name}\" for #{activity.client}"
+  end
+end