implements percentage in proposal supports

app/helpers/proposals_helper.rb

@@ -8,4 +8,14 @@ module ProposalsHelper
     end
   end
 
+  def supports_percentage(proposal)
+    percentage = (proposal.cached_votes_up.to_f * 100 / Proposal.votes_needed_for_success)
+    case percentage
+      when 0 then "0%"
+      when 0..(0.1) then "0.1%"
+      when (0.1)..100 then number_to_percentage(percentage, strip_insignificant_zeros: true, precision: 1)
+      else "100%"
+    end
+  end
+
 end

app/views/proposals/_votes.html.erb

@@ -8,7 +8,7 @@
   <span class="total-supports">
     <%= t("proposals.proposal.supports", count: proposal.total_votes) %>&nbsp;
     <!-- percentage of supports -->
-      (0.1%)
+      (<%= supports_percentage(proposal) %>)
     <!-- /. percentage of supports -->
     <span>
       <abbr title="<%= t("proposals.proposal.census_percent") %>">

spec/helpers/proposals_helper_spec.rb

@@ -3,7 +3,6 @@ require 'rails_helper'
 describe ProposalsHelper do
 
   describe "#progress_bar_percentage" do
-
     it "should be 0 if no votes" do
       proposal = create(:proposal)
       expect(progress_bar_percentage(proposal)).to eq 0
@@ -20,4 +19,26 @@ describe ProposalsHelper do
     end
   end
 
+  describe "#supports_percentage" do
+    it "should be 0 if no votes" do
+      proposal = create(:proposal)
+      expect(supports_percentage(proposal)).to eq "0%"
+    end
+
+    it "should be a between 0.1 from 1 to 0.1% of needed votes" do
+      proposal = create(:proposal, cached_votes_up: 1)
+      expect(supports_percentage(proposal)).to eq "0.1%"
+    end
+
+    it "should be a between 1 and 100 if there are votes but less than needed" do
+      proposal = create(:proposal, cached_votes_up: Proposal.votes_needed_for_success/2)
+      expect(supports_percentage(proposal)).to eq "50%"
+    end
+
+    it "should be 100 if there are more votes than needed" do
+      proposal = create(:proposal, cached_votes_up: Proposal.votes_needed_for_success*2)
+      expect(supports_percentage(proposal)).to eq "100%"
+    end
+  end
+
 end