ruby on rails - how to display charts/graphs based on user specific data -

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in ror project, use sqlite database storing registered users data. using highcharts , able generate charts based on data database. need generate graphs each user based on specific data in database.

my database columns

id, name, category 1 , category2, catogery 3
in sqlite3 database, need when user logs-in shld able see pie-graph using data category1, category2 , category 3 columns .

any appreciated.

there's few ways of doing this, here's one

controllers/charts_controller.rb

class chartscontroller < applicationcontroller   def pie_chart_for_users      @this_user = user.find(1)   end end

views/charts/pie_chart_for_users.html.erb

<script type="text/javascript">   var $j = jquery.noconflict();  $j(document).ready(function() {   new highcharts.chart({     chart: {       renderto: 'users_chart',       plotbackgroundcolor: null,       plotborderwidth: null,       plotshadow: false     },     title: {       text: 'unknown user data'     },     plotoptions: {       pie: {         allowpointselect: true,         cursor: 'pointer',         datalabels: {           enabled: false         }       }      },      series: [{     type: 'pie',     name: 'user data',       data: [           ['category one', <%= @this_user.category_one %>],           ['category two', <%= @this_user.category_two %>],           ['category three', <%= @this_user.category_three %>]           ]      }]    }); }); </script>  <div id="users_chart"></div>

config/routes.rb

map.pie_chart_for_users 'charts/pie_chart_for_users', :controller => 'charts', :action => 'pie_chart_for_users'

based around highcharts pie chart demo, used named route demo controller , action names call - should able use resources instead. think should give idea although haven't run test it.


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