Blog history restores now.

Web/lib/MJB/Web/Controller/Dashboard.pm

@@ -364,5 +364,33 @@ sub blog_history ( $c ) {
     my $history = $c->stash->{history} = $c->jekyll($blog->domain->name)->history;
 }
 
+sub do_blog_history ( $c ) {
+    my $blog = $c->stash->{blog} = $c->db->blog( $c->param('id') );
+
+    if ( $blog->person->id ne $c->stash->{person}->id ) {
+        $c->render(
+            text   => "Error: This blog isn't owned by you.",
+            status => 404,
+            format => 'txt',
+        );
+        return;
+    }
+    
+    my $commit = $c->param('commit_hash');
+
+    my $jekyll = $c->jekyll($blog->domain->name);
+
+    my $history = $c->stash->{history} = $jekyll->history;
+
+    my ( $old_commit ) = grep { $_->{commit} eq $commit  } @{$history};
+
+    if ( $old_commit ) {
+        $jekyll->revert_commit( $commit );
+
+        $c->flash( confirmation => "Undid $commit!" );
+        $c->redirect_to( $c->url_for( 'show_dashboard_blog_history', { id => $blog->id } ) );
+    }
+}
+
 
 1;

Web/templates/dashboard/blog_history.html.ep

@@ -1,6 +1,6 @@
 % layout 'standard', title => 'Dashboard', sb_active => 'dashboard';
 
-%= include 'dashboard/_blog_nav', page => 'posts'
+%= include 'dashboard/_blog_nav', page => 'history'
 
 % if ( my $confirmation = flash 'confirmation' ) {
     <div style="margin-top: 2em" class="alert alert-success" role="alert">
@@ -32,7 +32,7 @@
             <tr>
                 <th class="text-nowrap">When?</th>
                 <th class="text-nowrap">What?</th>
-                <th class="text-nowrap">Restore?</th>
+                <th class="text-nowrap">Action</th>
             </tr>
         </thead>
         <tbody>
@@ -41,9 +41,9 @@
                 <td><%= $change->{dateref} %></a></td>
                 <td><%= $change->{message} %></a></td>
                 <td>
-                    <form style="margin-top: 1.5em" method="POST" action="<%= $c->url_for( 'do_dashboard_blog_history' ) %>">
-                        <input type="hidden" name="commit_id" value="<%= $change->{commit} %>">
-                        <button type="submit" class="btn btn-sm btn-primary float-end">Restore</button>
+                    <form style="margin-top: 1.5em; display: inline;" method="POST" action="<%= $c->url_for( 'do_dashboard_blog_history' ) %>">
+                        <input type="hidden" name="commit_hash" value="<%= $change->{commit} %>">
+                        <button type="submit" class="btn btn-sm btn-primary">Undo Change</button>
                     </form>
                 </td>
             </tr>

libs/MJB-Backend-Jekyll/lib/MJB/Backend/Jekyll.pm

@@ -282,6 +282,26 @@ sub remove_file {
 
 }
 
+sub revert_commit {
+    my ( $self, $commit ) = @_;
+
+    # Check that the repo exists and is latest.
+    $self->_ensure_repository_is_latest;
+
+    # Add the file to git
+    $self->system_command( [ qw( git revert --no-edit ), $commit ], {
+        chdir => $self->repo_path,
+    });
+
+    # Push the repo to the store server
+    $self->system_command( [ qw( git push origin master ) ], {
+        chdir => $self->repo_path,
+    });
+
+    return 1;
+
+}
+
 sub delete_post {
     my ( $self, $title, $file ) = @_;