reduces size of initially displayed members to 50

app/controllers/my_projects_overviews_controller.rb

@@ -145,7 +145,7 @@ class MyProjectsOverviewsController < ApplicationController
   def show_all_members
     respond_to do |format|
       format.js { render :partial => "members",
-                         :locals => { :user_by_role => users_by_role(nil),
+                         :locals => { :users_by_role => users_by_role(0),
                                       :count_users_by_role => count_users_by_role } }
     end
   end
@@ -205,25 +205,29 @@ class MyProjectsOverviewsController < ApplicationController
   end
 
   def users_by_role(limit = 100)
+    @users_by_role = Hash.new do |h, size|
+      h[size] = if size > 0
+                  sql_string = all_roles.map do |r|
+                    %Q{ (Select users.*, member_roles.role_id from users
+                        JOIN members on users.id = members.user_id
+                        JOIN member_roles on member_roles.member_id = members.id
+                        WHERE members.project_id = #{ project.id } AND member_roles.role_id = #{ r.id }
+                        LIMIT #{ size } ) }
+                  end.join(" UNION ALL ")
+
+                  User.find_by_sql(sql_string).group_by(&:role_id).inject({}) do |hash, (role_id, users)|
+                    hash[all_roles.detect{ |r| r.id == role_id.to_i }] = users
+                    hash
+                  end
+                else
+
+                  project.users_by_role
+
+                end
 
-    @users_by_role ||= if limit
-                         sql_string = all_roles.map do |r|
-                           %Q{ (Select users.*, member_roles.role_id from users
-                               JOIN members on users.id = members.user_id
-                               JOIN member_roles on member_roles.member_id = members.id
-                               WHERE members.project_id = #{ project.id } AND member_roles.role_id = #{ r.id }
-                               LIMIT #{ limit } ) }
-                         end.join(" UNION ALL ")
-
-                         User.find_by_sql(sql_string).group_by(&:role_id).inject({}) do |hash, (role_id, users)|
-                           hash[all_roles.detect{ |r| r.id == role_id.to_i }] = users
-                           hash
-                         end
-                       else
-
-                         project.users_by_role
+    end
 
-                       end
+    @users_by_role[limit]
   end
 
   def count_users_by_role

app/views/my_projects_overviews/blocks/_members.rhtml

@@ -1,6 +1,7 @@
 <h2 class="page-layout-only"><%=l(:label_member_plural)%></h2>
 <h3><%=l(:label_member_plural)%></h3>
-<% if users_by_role.any? %>
+
+<% if users_by_role(50).any? %>
   <div class="members overview" id="users_per_role">
     <p>
       <%= render :partial => "members",
@@ -8,10 +9,12 @@
                              :count_users_by_role => count_users_by_role } %>
     </p>
     <p>
+      <% if users_by_role(50).any?{ |role, users| users.count < count_users_by_role[role] } %>
         <%= link_to(l(:'project_page.all'), { :controller => 'my_projects_overviews',
                                               :action => 'show_all_members',
                                               :id => project.id },
                                               :class => "all" ) %>
+      <% end %>
     </p>
   </div>
 <% end %>