2.0.3

app/controllers/capture_controller.rb

@@ -11,7 +11,7 @@ def index
     if logged_in?
       if params[:calibration_id]
         @calibration = Spectrum.find(params[:calibration_id])
-      else
+      elsif current_user.calibrations.count > 0
         @calibration = current_user.last_calibration
       end
       @calibrations = Spectrum.where(calibrated: true, user_id: current_user.id)

app/models/spectrum.rb

@@ -510,7 +510,7 @@ def generate_processed_spectrum
   end
 
   def latest_json_data
-    if self.snapshots.length > 0
+    if self.snapshots.count > 0
       return ActiveSupport::JSON.decode(self.snapshots.last.data)
     else
       return ActiveSupport::JSON.decode(self.clean_json)

app/models/user.rb

@@ -77,7 +77,7 @@ def email=(value)
   end
 
   def last_calibration 
-    self.calibrations.first
+    Spectrum.find self.calibrations.first.id
   end
 
   def calibrations

test/unit/user_test.rb

@@ -3,4 +3,29 @@
 class UserTest < ActiveSupport::TestCase
   fixtures :users
 
+  test "user calibrations" do 
+    u = User.first
+    assert_not_nil u.calibrations
+  end
+
+  test "user last calibration" do 
+    u = User.first
+
+    s = Spectrum.new({
+      title:     "A new spectrum",
+      author:     User.first.login,
+      video_row: 1, # the vertical cross section of the video feed
+      notes:     "This was nice, wasn't it.",
+      user_id:   User.first.id,
+    })
+    s.image_from_dataurl("data:image/gif;base64,R0lGODdhMAAwAPAAAAAAAP///ywAAAAAMAAwAAAC8IyPqcvt3wCcDkiLc7C0qwyGHhSWpjQu5yqmCYsapyuvUUlvONmOZtfzgFzByTB10QgxOR0TqBQejhRNzOfkVJ+5YiUqrXF5Y5lKh/DeuNcP5yLWGsEbtLiOSpa/TPg7JpJHxyendzWTBfX0cxOnKPjgBzi4diinWGdkF8kjdfnycQZXZeYGejmJlZeGl9i2icVqaNVailT6F5iJ90m6mvuTS4OK05M0vDk0Q4XUtwvKOzrcd3iq9uisF81M1OIcR7lEewwcLp7tuNNkM3uNna3F2JQFo97Vriy/Xl4/f1cf5VWzXyym7PHhhx4dbgYKAAA7")
+    s.data = '{"lines":[{"r":10,"g":10,"b":10,"average":10,"wavelength":400},{"r":10,"g":10,"b":10,"average":10,"wavelength":700}]}'
+    assert s.save!
+    assert s.tag('linearCalibration:0-1', User.first.id)
+
+    assert u.calibrations.count > 0
+    assert_not_nil u.last_calibration
+    assert_not_nil u.last_calibration
+  end
+
 end