Add problem type

app/views/problems/_form.html.erb

@@ -0,0 +1,25 @@
+<%= form_for(@problem) do |f| %>
+  <% if @problem.errors.any? %>
+    <div id="error_explanation">
+      <h2><%= pluralize(@problem.errors.count, "error") %> prohibited this problem from being saved:</h2>
+
+      <ul>
+      <% @problem.errors.full_messages.each do |message| %>
+        <li><%= message %></li>
+      <% end %>
+      </ul>
+    </div>
+  <% end %>
+
+  <div class="field">
+    <%= f.label :title %><br>
+    <%= f.text_field :title %>
+  </div>
+  <div class="field">
+    <%= f.label :content %><br>
+    <%= f.text_area :content %>
+  </div>
+  <div class="actions">
+    <%= f.submit %>
+  </div>
+<% end %>

app/views/problems/edit.html.erb

@@ -0,0 +1,6 @@
+<h1>Editing problem</h1>
+
+<%= render 'form' %>
+
+<%= link_to 'Show', @problem %> |
+<%= link_to 'Back', problems_path %>

app/views/problems/index.html.erb

@@ -0,0 +1,27 @@
+<h1>Listing problems</h1>
+
+<table>
+  <thead>
+    <tr>
+      <th>Title</th>
+      <th>Content</th>
+      <th colspan="3"></th>
+    </tr>
+  </thead>
+
+  <tbody>
+    <% @problems.each do |problem| %>
+      <tr>
+        <td><%= problem.title %></td>
+        <td><%= problem.content %></td>
+        <td><%= link_to 'Show', problem %></td>
+        <td><%= link_to 'Edit', edit_problem_path(problem) %></td>
+        <td><%= link_to 'Destroy', problem, method: :delete, data: { confirm: 'Are you sure?' } %></td>
+      </tr>
+    <% end %>
+  </tbody>
+</table>
+
+<br>
+
+<%= link_to 'New Problem', new_problem_path %>

app/views/problems/index.json.jbuilder

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+json.array!(@problems) do |problem|
+  json.extract! problem, :id, :title, :content
+  json.url problem_url(problem, format: :json)
+end

app/views/problems/new.html.erb

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+<h1>New problem</h1>
+
+<%= render 'form' %>
+
+<%= link_to 'Back', problems_path %>

app/views/problems/show.html.erb

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+<p id="notice"><%= notice %></p>
+
+<p>
+  <strong>Title:</strong>
+  <%= @problem.title %>
+</p>
+
+<p>
+  <strong>Content:</strong>
+  <%= @problem.content %>
+</p>
+
+<%= link_to 'Edit', edit_problem_path(@problem) %> |
+<%= link_to 'Back', problems_path %>

app/views/problems/show.json.jbuilder

@@ -0,0 +1 @@
+json.extract! @problem, :id, :title, :content, :created_at, :updated_at