fix multiple registration

client/app/states/registration.coffee

@@ -124,7 +124,6 @@ module.exports = class Registration extends StateModel
     initSignup: ->
         # Declares a stream to receive the form submission
         @signup = new Bacon.Bus()
-        @isSignup = false
 
         # If the current step is `preset`, set the valve to block the step flow:
         # it will resume when the sign up form request returns a success.
@@ -142,23 +141,18 @@ module.exports = class Registration extends StateModel
     - data: an object containing the form input entries as key/values pairs
     ###
     signupSubmit: (data) =>
-        if @isSignup
-            # Map the request end to the next button busy state
-            @nextBusy.push new Bacon.Next(false)
-        else
-            @isSignup = true
-            # Submit the form content to the register endpoint and creates a stream
-            # with the ajax promise
-            req = Bacon.fromPromise $.post '/register', JSON.stringify data
-            # If the request is successful, we stores the username in the global
-            # scope to prepare the login view.
-            req.subscribe -> window.username = data['public_name']
-            # Unblock the step flow valve when the response is successful
-            @stepValve.plug req.map false
-            # Map request errors in the `errors` stream
-            @errors.plug req.errors().mapError '.responseJSON.errors'
-            # Map the request end to the next button busy state
-            @nextBusy.plug req.mapEnd false
+        # Submit the form content to the register endpoint and creates a stream
+        # with the ajax promise
+        req = Bacon.fromPromise $.post '/register', JSON.stringify data
+        # If the request is successful, we stores the username in the global
+        # scope to prepare the login view.
+        req.subscribe -> window.username = data['public_name']
+        # Unblock the step flow valve when the response is successful
+        @stepValve.plug req.map false
+        # Map request errors in the `errors` stream
+        @errors.plug req.errors().mapError '.responseJSON.errors'
+        # Map the request end to the next button busy state
+        @nextBusy.plug req.mapEnd false
 
 
     ###

client/app/views/register/preset.coffee

@@ -47,12 +47,18 @@ module.exports = class RegisterPresetView extends FormView
         @initForm()
         @initErrors()
 
+        # Step valve
+        @onStep = @model.get('step').sampledBy(@form).map (step) ->
+            step is 'preset'
+        .toProperty()
+
+
         # Set the next button enable state when all required fields are filled
         @model.nextEnabled.plug @required.changes()
 
         # Create a new stream from the submit one that is filtered onto the step
         # (e.g. the form will not be submitted if we're already not in the step)
-        submit = @form.filter => @model.get('step').map (cur) -> cur is 'preset'
+        submit = @form.filter @onStep
         # We plug it to the signup stream and to the next button busy state (e.g
         # the busy state is enable when the form is submitted)
         @model.signup.plug submit