better checks of import/export settings

rowers/templates/rower_exportsettings.html

@@ -5,6 +5,34 @@
 {% block main %}
 <h1>Import and Export Settings for {{ rower.user.first_name }} {{ rower.user.last_name }}</h1>
 
+<p>You are currently connected to:
+  {% if r.c2token %}
+  Concept2 Logbook,
+  {% endif %}
+  {% if r.sporttrackstoken %}
+  SportTracks,
+  {% endif %}
+  {% if r.underarmourtoken %}
+  Under Armour (MapMyFitness),
+  {% endif %}
+  {% if r.tptoken %}
+  TrainingPeaks,
+  {% endif %}
+  {% if r.polartoken %}
+  Polar,
+  {% endif %}
+  {% if r.garmintoken %}
+  Garmin Connect,
+  {% endif %}
+  {% if r.stravatoken %}
+  Strava,
+  {% endif %}
+  {% if r.runkeepertoken %}
+  Runkeeper.
+  {% endif %}
+  Strava,
+</p>
+
 {% if form.errors %}
 <p style="color: red;">
   Please correct the error{{ form.errors|pluralize }} below.

rowers/views/userviews.py

@@ -298,6 +298,17 @@ def rower_favoritecharts_view(request,userid=0):
 @login_required()
 @permission_required('rower.is_coach',fn=get_user_by_userid,raise_exception=True)
 def rower_exportsettings_view(request,userid=0):
+    attrtokens = {
+        'polar_auto_import':'polartoken',
+        'c2_auto_export':'c2token',
+        'c2_auto_import':'c2token',
+        'mapmyfitness_auto_export':'underarmourtoken',
+        'runkeeper_auto_export':'runkeepertoken',
+        'sporttracks_auto_export':'sporttrackstoken',
+        'strava_auto_export':'stravatoken',
+        'strava_auto_import':'stravatoken',
+        'trainingpeaks_auto_export':'tptoken',
+    }
     r = getrequestrower(request,userid=userid)
     if request.method == 'POST':
         form = RowerExportForm(request.POST)
@@ -305,7 +316,21 @@ def rower_exportsettings_view(request,userid=0):
             cd = form.cleaned_data
 
             for attr, value in cd.items():
-                setattr(r, attr, value)
+                doset = True
+                try:
+                    tokenname = attrtokens[attr]
+                    if getattr(r, tokenname) == '' or getattr(r, tokenname) == None:
+                        doset = False
+                except KeyError:
+                    doset = True
+                if not doset:
+                    before = getattr(r,attr)
+                    if before == value:
+                        doset = True
+                if doset:
+                    setattr(r, attr, value)
+                else:
+                    messages.error(request,'Could not set '+attr+'. You need to create the connection first.')
 
             r.save()
             messages.info(request,'Settings saved')