4 files changed, 39 insertions, 9 deletions
diff --git a/users/app/models/account.rb b/users/app/models/account.rb
index 5c943bb..cf998e4 100644
--- a/users/app/models/account.rb
+++ b/users/app/models/account.rb
@@ -27,7 +27,8 @@ class Account
       @user.update_attributes attrs.slice(:password_verifier, :password_salt)
     end
     # TODO: move into identity controller
-    update_pgp_key(attrs[:public_key]) if attrs.has_key? :public_key
+    key = update_pgp_key(attrs[:public_key])
+    @user.errors.set :public_key, key.errors.full_messages
     @user.save && save_identities
     @user.refresh_identity
   end
@@ -49,8 +50,12 @@ class Account
   end
 
   def update_pgp_key(key)
-    @new_identity ||= Identity.for(@user)
-    @new_identity.set_key(:pgp, key)
+    PgpKey.new(key).tap do |key|
+      if key.present? && key.valid?
+        @new_identity ||= Identity.for(@user)
+        @new_identity.set_key(:pgp, key)
+      end
+    end
   end
 
   def save_identities
diff --git a/users/app/models/identity.rb b/users/app/models/identity.rb
index 97966d0..cbb540e 100644
--- a/users/app/models/identity.rb
+++ b/users/app/models/identity.rb
@@ -94,9 +94,9 @@ class Identity < CouchRest::Model::Base
     read_attribute('keys') || HashWithIndifferentAccess.new
   end
 
-  def set_key(type, value)
-    return if keys[type] == value
-    write_attribute('keys', keys.merge(type => value))
+  def set_key(type, key)
+    return if keys[type] == key.to_s
+    write_attribute('keys', keys.merge(type => key.to_s))
   end
 
   # for LoginFormatValidation
diff --git a/users/app/models/pgp_key.rb b/users/app/models/pgp_key.rb
new file mode 100644
index 0000000..fddec1e
--- /dev/null
+++ b/users/app/models/pgp_key.rb
@@ -0,0 +1,25 @@
+class PgpKey
+  include ActiveModel::Validations
+
+  # mostly for testing.
+  attr_accessor :key_block
+
+  def initialize(key_block = nil)
+    @key_block = key_block
+  end
+
+  def to_s
+    @key_block
+  end
+
+  def present?
+    @key_block.present?
+  end
+
+  # let's allow comparison with plain key_block strings.
+  def ==(other)
+    self.equal?(other) or
+    self.to_s == other
+  end
+
+end
diff --git a/users/test/integration/api/account_flow_test.rb b/users/test/integration/api/account_flow_test.rb
index e41befa..90f2a97 100644
--- a/users/test/integration/api/account_flow_test.rb
+++ b/users/test/integration/api/account_flow_test.rb
@@ -114,9 +114,9 @@ class AccountFlowTest < RackTest
     # should not overwrite public key:
     put "http://api.lvh.me:3000/1/users/" + @user.id + '.json', :user => {:blee => :blah}, :format => :json
     assert_equal test_public_key, Identity.for(@user).keys[:pgp]
-    # should overwrite public key:
-    put "http://api.lvh.me:3000/1/users/" + @user.id + '.json', :user => {:public_key => nil}, :format => :json
-    assert_nil Identity.for(@user).keys[:pgp]
+    # should not empty public key:
+    put "http://api.lvh.me:3000/1/users/" + @user.id + '.json', :user => {:public_key => ""}, :format => :json
+    assert_equal test_public_key, Identity.for(@user).keys[:pgp]
   end
 
 end