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Description: Plug and play trend visualisation for your data.
Homepage: http://blog.choonkeat.com/weblog/2008/04/poor-mans-trend.html
Clone URL: git://github.com/dustin/poormans-trends.git
Search Repo: 
bugfix: selection for "top_values" in foreign keys by limiting 
correct weeks
choonkeat (author)
Thu Apr 17 00:52:57 -0700 2008
commit  6c5117cec0f9387f08e3a5c0a659c667d74c7804
tree    85b47d707d2ad6e961e9326d60e2c7e8b4060546
parent  16e587e2979f3dd70ab0b66c9c3fb419940d4700
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lib/poormans_trends.rb 
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@@ -44,7 +44,7 @@ module Poormans
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           @columns.each do |col|
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             @top_values[col] = klass.find(:all, {
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               :select => "COUNT(*) as #{col}_count, #{col}",
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-              :conditions => "DATEDIFF(NOW(), #{date_col}) < 8 ",
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+              :conditions => ["FLOOR(DATEDIFF(NOW(), #{date_col}) / 7) <= ?", @max_cols],
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               :group => col,
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               :order => "#{col}_count DESC",
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               :limit => @max_rows,
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views/table.html.erb 
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@@ -9,7 +9,7 @@
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     <% @top_values[col][0..0].each do |hash| %>
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       <tr>
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         <td>weeks ago</td>
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-  			<% (0..@max_cols-1).to_a.reverse.each do |val| %>
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+  			<% (0..@max_cols).to_a.reverse.each do |val| %>
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         <th id="<%= col %>_<%= val %>"><%= val %></th>
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         <% end %>
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       </tr>
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@@ -19,7 +19,7 @@
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     <% @top_values[col].each do |hash| %>
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       <tr>
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         <th headers="members"><%=h hash.keys.first || 'nil' %></th>
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-  			<% (0..@max_cols-1).to_a.reverse.each do |val| %>
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+  			<% (0..@max_cols).to_a.reverse.each do |val| %>
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         <td headers="<%= col %>_<%= val %>"><%=h hash.values.first[val.to_s] || 0 %></td>
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         <% end %>
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       </tr>

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