Add proposal translations

Adapt retire form to include needed translations and move validations
from controller to model.

Also change sanitizable concern to sanitize not marked for destruction
translations.

spec/models/proposal_spec.rb

@@ -8,6 +8,7 @@ describe Proposal do
     it_behaves_like "has_public_author"
     it_behaves_like "notifiable"
     it_behaves_like "map validations"
+    it_behaves_like "globalizable", :proposal
   end
 
   it "is valid" do
@@ -44,10 +45,36 @@ describe Proposal do
   describe "#description" do
     it "is sanitized" do
       proposal.description = "<script>alert('danger');</script>"
+
       proposal.valid?
+
       expect(proposal.description).to eq("alert('danger');")
     end
 
+    it "is sanitized using globalize accessors" do
+      proposal.description_en = "<script>alert('danger');</script>"
+
+      proposal.valid?
+
+      expect(proposal.description_en).to eq("alert('danger');")
+    end
+
+    it "is html_safe" do
+      proposal.description = "<script>alert('danger');</script>"
+
+      proposal.valid?
+
+      expect(proposal.description).to be_html_safe
+    end
+
+    it "is html_safe using globalize accessors" do
+      proposal.description_en = "<script>alert('danger');</script>"
+
+      proposal.valid?
+
+      expect(proposal.description_en).to be_html_safe
+    end
+
     it "is not valid when very long" do
       proposal.description = "a" * 6001
       expect(proposal).not_to be_valid
@@ -143,6 +170,46 @@ describe Proposal do
     Setting["proposal_code_prefix"] = "MAD"
   end
 
+  describe "#retired_explanation" do
+    it "is valid when retired timestamp is present and retired explanation is defined" do
+      proposal.retired_at = Time.current
+      proposal.retired_explanation = "Duplicated of ..."
+      proposal.retired_reason = "duplicated"
+      expect(proposal).to be_valid
+    end
+
+    it "is not valid when retired_at is present and retired explanation is empty" do
+      proposal.retired_at = Time.current
+      proposal.retired_explanation = nil
+      proposal.retired_reason = "duplicated"
+      expect(proposal).not_to be_valid
+    end
+  end
+
+  describe "#retired_reason" do
+    it "is valid when retired timestamp is present and retired reason is defined" do
+      proposal.retired_at = Time.current
+      proposal.retired_explanation = "Duplicated of ..."
+      proposal.retired_reason = "duplicated"
+      expect(proposal).to be_valid
+    end
+
+    it "is not valid when retired timestamp is present but defined retired reason
+        is not included in retired reasons" do
+      proposal.retired_at = Time.current
+      proposal.retired_explanation = "Duplicated of ..."
+      proposal.retired_reason = "duplicate"
+      expect(proposal).not_to be_valid
+    end
+
+    it "is not valid when retired_at is present and retired reason is empty" do
+      proposal.retired_at = Time.current
+      proposal.retired_explanation = "Duplicated of ..."
+      proposal.retired_reason = nil
+      expect(proposal).not_to be_valid
+    end
+  end
+
   describe "#editable?" do
     let(:proposal) { create(:proposal) }
 
@@ -820,7 +887,7 @@ describe Proposal do
 
   describe "retired" do
     let!(:proposal1) { create(:proposal) }
-    let!(:proposal2) { create(:proposal, retired_at: Time.current) }
+    let!(:proposal2) { create(:proposal, :retired) }
 
     it "retired? is true" do
       expect(proposal1.retired?).to eq false