created db and low level stuff for characters

app/models/campaign.rb

@@ -3,4 +3,5 @@ class Campaign < ApplicationRecord
 
   has_many :campaign_users
   has_many :users, through: :campaign_users
+  has_many :characters
 end

app/models/character.rb

@@ -0,0 +1,8 @@
+class Character < ApplicationRecord
+  validates_presence_of :name
+
+  has_rich_text :background
+
+  belongs_to :user
+  belongs_to :campaign
+end

app/models/user.rb

@@ -8,4 +8,5 @@ class User < ApplicationRecord
 
   has_many :campaign_users
   has_many :campaigns, through: :campaign_users
+  has_many :characters
 end

db/migrate/20230604195042_create_characters.rb

@@ -0,0 +1,12 @@
+class CreateCharacters < ActiveRecord::Migration[7.0]
+  def change
+    create_table :characters do |t|
+      t.string :name
+      t.string :image_url
+      t.references :user, null: false, foreign_key: true
+      t.references :campaign, null: false, foreign_key: true
+
+      t.timestamps
+    end
+  end
+end

spec/models/campaign_spec.rb

@@ -4,5 +4,6 @@
   describe 'relationships' do
     it { should have_many :campaign_users }
     it { should have_many(:users).through(:campaign_users)}
+    it { should have_many :characters }
   end
 end

spec/models/characters_spec.rb

@@ -0,0 +1,12 @@
+require 'rails_helper'
+
+RSpec.describe Character, type: :model do
+  describe 'validations' do
+    it { should validate_presence_of :name }
+  end
+
+  describe 'relationships' do
+    it { should belong_to :campaign }
+    it { should belong_to :user }
+  end
+end

spec/models/user_spec.rb

@@ -13,5 +13,6 @@
   describe 'relationships' do
     it { should have_many :campaign_users }
     it { should have_many(:campaigns).through(:campaign_users)}
+    it { should have_many :characters }
   end
 end