Add diary entry subscribe/unsubscribe GET pages

app/controllers/diary_entries_controller.rb

@@ -157,21 +157,25 @@ class DiaryEntriesController < ApplicationController
   end
 
   def subscribe
-    diary_entry = DiaryEntry.find(params[:id])
+    @diary_entry = DiaryEntry.find(params[:id])
 
-    diary_entry.subscriptions.create(:user => current_user) unless diary_entry.subscribers.exists?(current_user.id)
+    if request.post?
+      @diary_entry.subscriptions.create(:user => current_user) unless @diary_entry.subscribers.exists?(current_user.id)
 
-    redirect_to diary_entry_path(diary_entry.user, diary_entry)
+      redirect_to diary_entry_path(@diary_entry.user, @diary_entry)
+    end
   rescue ActiveRecord::RecordNotFound
     render :action => "no_such_entry", :status => :not_found
   end
 
   def unsubscribe
-    diary_entry = DiaryEntry.find(params[:id])
+    @diary_entry = DiaryEntry.find(params[:id])
 
-    diary_entry.subscriptions.where(:user => current_user).delete_all if diary_entry.subscribers.exists?(current_user.id)
+    if request.post?
+      @diary_entry.subscriptions.where(:user => current_user).delete_all if @diary_entry.subscribers.exists?(current_user.id)
 
-    redirect_to diary_entry_path(diary_entry.user, diary_entry)
+      redirect_to diary_entry_path(@diary_entry.user, @diary_entry)
+    end
   rescue ActiveRecord::RecordNotFound
     render :action => "no_such_entry", :status => :not_found
   end

app/views/diary_entries/_diary_entry.html.erb

@@ -1,26 +1,5 @@
 <article class='diary_post border-top border-grey py-3<%= " text-muted px-3 bg-danger bg-opacity-10" unless diary_entry.visible %> user_<%= diary_entry.user.id %>'>
-  <div class='mb-3'>
-    <% if @user %>
-      <h2><%= link_to diary_entry.title, diary_entry_path(diary_entry.user, diary_entry) %></h2>
-    <% else %>
-      <div class="row">
-        <div class="col-auto">
-          <%= user_thumbnail diary_entry.user %>
-        </div>
-        <div class="col">
-          <h2><%= link_to diary_entry.title, diary_entry_path(diary_entry.user, diary_entry) %></h2>
-        </div>
-      </div>
-    <% end %>
-
-    <small class='text-muted'>
-      <%= t(".posted_by_html", :link_user => (link_to diary_entry.user.display_name, user_path(diary_entry.user)), :created => l(diary_entry.created_at, :format => :blog), :language_link => (link_to diary_entry.language.name, :controller => "diary_entries", :action => "index", :display_name => nil, :language => diary_entry.language_code)) %>
-      <% if (l(diary_entry.updated_at, :format => :blog) != l(diary_entry.created_at, :format => :blog)) %>
-        <%= t(".updated_at_html", :updated => l(diary_entry.updated_at, :format => :blog)) %>
-      <% end %>
-    </small>
-
-  </div>
+  <%= render :partial => "diary_entry_heading", :object => diary_entry, :as => "diary_entry" %>
 
   <div class="richtext text-break" xml:lang="<%= diary_entry.language_code %>" lang="<%= diary_entry.language_code %>">
     <%= diary_entry.body.to_html %>

app/views/diary_entries/_diary_entry_heading.html.erb

@@ -0,0 +1,21 @@
+<div class='mb-3'>
+  <% if @user %>
+    <h2><%= link_to diary_entry.title, diary_entry_path(diary_entry.user, diary_entry) %></h2>
+  <% else %>
+    <div class="row">
+      <div class="col-auto">
+        <%= user_thumbnail diary_entry.user %>
+      </div>
+      <div class="col">
+        <h2><%= link_to diary_entry.title, diary_entry_path(diary_entry.user, diary_entry) %></h2>
+      </div>
+    </div>
+  <% end %>
+
+  <small class='text-muted'>
+    <%= t("diary_entries.diary_entry.posted_by_html", :link_user => (link_to diary_entry.user.display_name, user_path(diary_entry.user)), :created => l(diary_entry.created_at, :format => :blog), :language_link => (link_to diary_entry.language.name, :controller => "diary_entries", :action => "index", :display_name => nil, :language => diary_entry.language_code)) %>
+    <% if (l(diary_entry.updated_at, :format => :blog) != l(diary_entry.created_at, :format => :blog)) %>
+      <%= t("diary_entries.diary_entry.updated_at_html", :updated => l(diary_entry.updated_at, :format => :blog)) %>
+    <% end %>
+  </small>
+</div>

app/views/diary_entries/subscribe.html.erb

@@ -0,0 +1,12 @@
+<% content_for :heading do %>
+  <h1><%= t ".heading", :user => @diary_entry.user.display_name %></h1>
+<% end %>
+
+<%= render :partial => "diary_entry_heading", :object => @diary_entry, :as => "diary_entry" %>
+
+<%= bootstrap_form_tag do |f| %>
+  <% if params[:referer] -%>
+  <%= f.hidden_field :referer, :value => params[:referer] %>
+  <% end -%>
+  <%= f.primary t(".button") %>
+<% end %>

app/views/diary_entries/unsubscribe.html.erb

@@ -0,0 +1,12 @@
+<% content_for :heading do %>
+  <h1><%= t ".heading", :user => @diary_entry.user.display_name %></h1>
+<% end %>
+
+<%= render :partial => "diary_entry_heading", :object => @diary_entry, :as => "diary_entry" %>
+
+<%= bootstrap_form_tag do |f| %>
+  <% if params[:referer] -%>
+  <%= f.hidden_field :referer, :value => params[:referer] %>
+  <% end -%>
+  <%= f.primary t(".button") %>
+<% end %>