ensure there is a default eportfolio page

fixes CNVS-14580

test plan:
1. create an eportfolio
2. click organize/manage pages
3. create a second page
4. open the eportfolio in a new tab
5. in one tab, delete the welcome page
6. in the second tab, delete the new page
7. refresh the eportfolio
8. it should still load the welcome page (having recreated it)

Change-Id: I400b2d4689773a8f48d8b3bfa577982492a4bfb4
Reviewed-on: https://gerrit.instructure.com/38847
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Cameron Matheson <cameron@instructure.com>
QA-Review: Amber Taniuchi <amber@instructure.com>
Product-Review: Simon Williams <simon@instructure.com>

Author: simonista

app/controllers/eportfolios_controller.rb

@@ -40,7 +40,7 @@ def create
       @portfolio = @current_user.eportfolios.build(params[:eportfolio])
       respond_to do |format|
         if @portfolio.save
-          @portfolio.setup_defaults
+          @portfolio.ensure_defaults
           flash[:notice] = t('notices.created', "Porfolio successfully created")
           format.html { redirect_to eportfolio_url(@portfolio) }
           format.json { render :json => @portfolio.as_json(:permissions => {:user => @current_user, :session => session}) }
@@ -60,8 +60,8 @@ def show
       session[:permissions_key] = CanvasUUID.generate
     end
     if authorized_action(@portfolio, @current_user, :read)      
-      @category = @portfolio.eportfolio_categories.first rescue nil
-      @category ||= @portfolio.setup_defaults
+      @portfolio.ensure_defaults
+      @category = @portfolio.eportfolio_categories.first
       @page = @category.eportfolio_entries.first
       @owner_view = @portfolio.user == @current_user && params[:view] != 'preview'
       if @owner_view
@@ -89,7 +89,7 @@ def update
     if authorized_action(@portfolio, @current_user, :update)
       respond_to do |format|
         if @portfolio.update_attributes(params[:eportfolio])
-          @portfolio.setup_defaults
+          @portfolio.ensure_defaults
           flash[:notice] = t('notices.updated', "Porfolio successfully updated")
           format.html { redirect_to eportfolio_url(@portfolio) }
           format.json { render :json => @portfolio.as_json(:permissions => {:user => @current_user, :session => session}) }

app/models/eportfolio.rb

@@ -65,12 +65,13 @@ def assign_uuid
     can :read
   end
 
-  def setup_defaults
-    cat = self.eportfolio_categories.create(:name => t(:first_category, "Home")) if self.eportfolio_categories.empty?
+  def ensure_defaults
+    cat = self.eportfolio_categories.first
+    cat ||= self.eportfolio_categories.create!(:name => t(:first_category, "Home"))
     if cat && cat.eportfolio_entries.empty?
       entry = cat.eportfolio_entries.build(:eportfolio => self, :name => t('first_entry.title', "Welcome"))
       entry.content = t('first_entry.content', "Nothing entered yet")
-      entry.save
+      entry.save!
     end
     cat
   end

lib/eportfolio_page.rb

@@ -18,7 +18,6 @@
 
 module EportfolioPage
   def eportfolio_page_attributes
-    @portfolio.setup_defaults
     @categories = @portfolio.eportfolio_categories
     if @portfolio.grants_right?(@current_user, session, :manage)
       @recent_submissions = @current_user.submissions.order("created_at DESC").all if @current_user && @current_user == @portfolio.user
@@ -49,4 +48,4 @@ def eportfolio_page_attributes
     end
   end
 
-end
+end

spec/controllers/eportfolios_controller_spec.rb

@@ -94,6 +94,21 @@ def category_entry
       response.should be_success
       assigns[:portfolio].should_not be_nil
     end
+
+    it "should create a category if one doesn't exist" do
+      user_session(@user)
+      get 'show', :id => @portfolio.id
+      response.should be_success
+      assigns[:category].should_not be_nil
+    end
+
+    it "should create an entry in the first category if one doesn't exist" do
+      @portfolio.eportfolio_categories.create!(:name => "Home")
+      user_session(@user)
+      get 'show', :id => @portfolio.id
+      response.should be_success
+      assigns[:page].should_not be_nil
+    end
   end
 
   describe "PUT 'update'" do

spec/models/eportfolio_spec.rb

@@ -19,4 +19,22 @@
 require File.expand_path(File.dirname(__FILE__) + '/../spec_helper.rb')
 
 describe Eportfolio do
+  describe "#ensure_defaults" do
+    before(:once) do
+      eportfolio
+    end
+
+    it "should create a category if one doesn't exist" do
+      @portfolio.eportfolio_categories.should be_empty
+      @portfolio.ensure_defaults
+      @portfolio.reload.eportfolio_categories.should_not be_empty
+    end
+
+    it "should create an entry in the first category if one doesn't exist" do
+      @category = @portfolio.eportfolio_categories.create!(:name => "Hi")
+      @category.eportfolio_entries.should be_empty
+      @portfolio.ensure_defaults
+      @category.reload.eportfolio_entries.should_not be_empty
+    end
+  end
 end