fix blog index and links

app/helpers/application_helper.rb

@@ -1,2 +1,9 @@
 module ApplicationHelper
+  def post_link(index)
+    post = Post.posts.values[index]
+    return "" unless post
+    link = post.date.to_s + "  "
+    link +=  link_to( post.title , blog_post_url(post.slug))
+    link.html_safe
+  end
 end

app/views/blog/index.haml

@@ -1,9 +1,9 @@
 .blog.blog_index
-  - @pages.each do |slug , page|
+  - @posts.each do |slug , post|
     .row
       .col-md-2
       .col-md-8
-        %h2= link_to page.title , blog_page_url(page.slug)
-        = render( page.template_name )[0 ... 350].html_safe
-        %span.whole= link_to ". . . .Read whole post" , blog_page_url(page.slug)
+        %h2= link_to post.title , blog_post_url(post.slug)
+        = render( "posts/#{post.template_name}" )[0 ... 350].html_safe
+        %span.whole= link_to ". . . .Read whole post" , blog_post_url(post.slug)
       .col-md-2

app/views/pages/index.html.haml

@@ -77,13 +77,8 @@
         %a{:href => "https://groups.google.com/forum/#!forum/ruby-x"} mail
     %h2.center News
     %p
-      Last but not least, i try to get recent developments down on paper when they are still fresh.
-    %p
-      {{ site.posts[0].date | date: "%d.%m.%y"  }}:
-      %a{:href => "{{ site.posts[0].url }}"} {{ site.posts[0].title }}
-    %p
-      {{ site.posts[1].date | date: "%d.%m.%y"  }}:
-      %a{:href => "{{ site.posts[1].url }}"} {{ site.posts[1].title }}
-    %p
-      {{ site.posts[2].date | date: "%d.%m.%y"  }}:
-      %a{:href => "{{ site.posts[2].url }}"} {{ site.posts[2].title }}
+      Last but not least, i try to get recent developments down on paper when they are
+      still fresh.
+    %p=post_link(0)
+    %p=post_link(1)
+    %p=post_link(2)

app/views/posts/_2017-9-5-more-types-will-come-but-later.haml

@@ -7,10 +7,11 @@
   The
   %a{:href => "/rubyx/layers.html"} architecture
   document outlines this in more detail, but in short:
-  \- types are immutable
-  \- every object has a type (which may change)
-  \- a type implements the interface of a class at a given time
-  \- a type is defined by a list of attribute names
+  %ul
+    %li types are immutable
+    %li every object has a type (which may change)
+    %li a type implements the interface of a class at a given time
+    %li a type is defined by a list of attribute names
 %p
   %img{:alt => "Types diagram", :src => "/assets/types.jpg"}/
 %h3#how-classes-work How classes work