implement appending messages to conversations

app/controllers/conversations_controller.rb

@@ -1,5 +1,22 @@
 # frozen_string_literal: true
 
 class ConversationsController < ApplicationController
-  def index; end
+  def index
+    @conversations = @current_user.conversations
+  end
+
+  def show
+    @conversation = @current_user.conversations.find(params[:id])
+    @messages = @conversation.messages
+    @prompt = Message.new(conversation: @conversation)
+  end
+
+  def create
+    @conversation = @current_user.conversations.new
+    if @conversation.save
+      redirect_to @conversation
+    else
+      render :index, status: :unprocessable_entity
+    end
+  end
 end

app/controllers/messages_controller.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class MessagesController < ApplicationController
+  def create
+    # TODO: Revisit auth once cancancan is installed
+    @message = Message.new(message_params)
+    if @message.save
+      redirect_to @message.conversation
+    else
+      redirect_to conversations_path
+    end
+  end
+
+  private
+
+  def message_params
+    params.require(:message).permit(:conversation_id, :body)
+  end
+end

app/models/conversation.rb

@@ -3,5 +3,5 @@
 class Conversation < ApplicationRecord
   belongs_to :user
 
-  has_many :messages, dependent: :destro
+  has_many :messages, dependent: :destroy
 end

app/views/conversations/index.html.erb

@@ -0,0 +1,11 @@
+<div>
+  <%= form_with do |form| %>
+    <%= form.submit "Start a new conversation" %>
+  <% end %>
+</div>
+
+<li>
+  <% @conversations.each do |conversation| %>
+    <%= link_to conversation %>
+  <% end %>
+</li>

app/views/conversations/show.html.erb

@@ -0,0 +1,15 @@
+<div>
+  <%= link_to "list conversations", conversations_path %>
+</div>
+
+<ul>
+  <% @messages.each do |message| %>
+    <li><%= message.body %></li>
+  <% end %>
+</ul>
+
+<%= form_with model: @prompt do |form| %>
+  <%= form.text_area :body %>
+  <%= form.hidden_field :conversation_id %>
+  <%= form.submit "send message" %>
+<% end %>

config/routes.rb

@@ -7,5 +7,6 @@ Rails.application.routes.draw do
   post :login, to: 'sessions#create'
   post :logout, to: 'sessions#destroy'
 
-  resources :conversations
+  resources :conversations, only: %i[index show create destroy]
+  resources :messages, only: %i[create]
 end