1. transport_mode depends on origin and 2. pickup timetable

app.py

@@ -203,6 +203,7 @@ def register_routes(app):
     def fill_trip_from_form(fahrt):
         fahrt.transport_mode = request.form["transport_mode"]
         fahrt.line = request.form.get("line", "").strip()
+        fahrt.course = request.form.get("course", "").strip()
         fahrt.origin = request.form["origin"].strip()
         fahrt.origin_stop_id = resolve_stop_id(request.form.get("origin_stop_id"))
         fahrt.destination = request.form["destination"].strip()

models.py

@@ -76,6 +76,10 @@ class Trip(db.Model):
 
     transport_mode = db.Column(db.String(50), nullable=False)
     line = db.Column(db.String(50))
+    # optional detail beyond the line, e.g. direction/departure time looked up
+    # in an external journey planner ("Kurs"); free text, nothing to match.
+    # Text, not String(n) - see the "lines" column truncation incident.
+    course = db.Column(db.Text)
     # free-text label as entered; *_stop_id links to a known stop when matched
     origin = db.Column(db.String(120), nullable=False)
     origin_stop_id = db.Column(db.Integer, db.ForeignKey("stops.id"))

static/stops.js

@@ -111,6 +111,9 @@
     if (!hidden) return;
 
     function clearMatch() {
+      delete hidden.dataset.stopType;
+      delete hidden.dataset.stopLat;
+      delete hidden.dataset.stopLon;
       if (!hidden.value) return;
       hidden.value = "";
       if (hint) { hint.textContent = ""; hint.classList.remove("matched"); }
@@ -118,6 +121,9 @@
     }
     function markMatch(stop) {
       hidden.value = String(stop.id);
+      hidden.dataset.stopType = stop.type;
+      hidden.dataset.stopLat = stop.lat;
+      hidden.dataset.stopLon = stop.lon;
       if (hint) {
         hint.textContent = "✓ " + stop.name +
           (stop.municipality ? ", " + stop.municipality : "");
@@ -223,8 +229,88 @@
     });
   }
 
+  // Which "Verkehrsmittel" options make sense for a given origin stop type.
+  // Rail stops aren't narrowed further (OSM doesn't tell S-Bahn from Fernzug).
+  var MODES_FOR_STOP_TYPE = {
+    bus: ["Bus"],
+    bus_station: ["Bus"],
+    tram: ["Straßenbahn"],
+    subway: ["U-Bahn"],
+    train: ["S-Bahn", "Regionalzug", "Fernzug (ÖBB/Railjet/WESTbahn)"],
+  };
+
+  function setupModeFilter(form) {
+    var select = form.querySelector("#transport_mode");
+    var originHidden = form.querySelector("#origin_stop_id");
+    if (!select || !originHidden) return;
+    var hint = form.querySelector("[data-mode-hint]");
+
+    function apply() {
+      var allowed = MODES_FOR_STOP_TYPE[originHidden.dataset.stopType || ""] || null;
+      var firstVisible = null;
+      Array.prototype.forEach.call(select.options, function (opt) {
+        var ok = !allowed || allowed.indexOf(opt.value) !== -1;
+        opt.hidden = !ok;
+        opt.disabled = !ok;
+        if (ok && !firstVisible) firstVisible = opt;
+      });
+      if (allowed && firstVisible && allowed.indexOf(select.value) === -1) {
+        select.value = firstVisible.value;
+      }
+      if (hint) {
+        hint.textContent = allowed
+          ? "Eingeschränkt auf das Verkehrsmittel der gewählten Haltestelle."
+          : "";
+      }
+    }
+
+    form.addEventListener("stopchange", apply);
+    apply(); // e.g. an already-matched origin when editing a trip
+  }
+
+  // "Fahrplan öffnen": opens Google Maps transit directions for the chosen
+  // stops (exact coordinates when matched, else the typed name) so the user
+  // can look up the real departure and copy it into the "Kurs" field.
+  function setupTimetableLink(form) {
+    var link = form.querySelector("[data-timetable-link]");
+    var originText = form.querySelector("#origin");
+    var destText = form.querySelector("#destination");
+    var originHidden = form.querySelector("#origin_stop_id");
+    var destHidden = form.querySelector("#destination_stop_id");
+    if (!link || !originText || !destText || !originHidden || !destHidden) return;
+
+    function locationParam(textInput, hiddenInput) {
+      var lat = hiddenInput.dataset.stopLat, lon = hiddenInput.dataset.stopLon;
+      if (lat && lon) return lat + "," + lon;
+      var name = textInput.value.trim();
+      return name ? name + ", Österreich" : "";
+    }
+
+    function apply() {
+      var origin = locationParam(originText, originHidden);
+      var destination = locationParam(destText, destHidden);
+      if (!origin || !destination) {
+        link.removeAttribute("href");
+        link.setAttribute("aria-disabled", "true");
+        return;
+      }
+      link.href = "https://www.google.com/maps/dir/?api=1" +
+        "&origin=" + encodeURIComponent(origin) +
+        "&destination=" + encodeURIComponent(destination) +
+        "&travelmode=transit";
+      link.removeAttribute("aria-disabled");
+    }
+
+    form.addEventListener("stopchange", apply);
+    originText.addEventListener("input", apply);
+    destText.addEventListener("input", apply);
+    apply();
+  }
+
   document.querySelectorAll("form").forEach(function (form) {
     form.querySelectorAll("[data-stop-input]").forEach(function (i) { setupStopCombo(i, form); });
     form.querySelectorAll("[data-line-input]").forEach(function (i) { setupLineCombo(i, form); });
+    setupModeFilter(form);
+    setupTimetableLink(form);
   });
 })();

templates/add_entry.html

@@ -11,6 +11,7 @@
             <option value="{{ option }}" {{ "selected" if fahrt and fahrt.transport_mode == option }}>{{ option }}</option>
           {% endfor %}
         </select>
+        <p class="field-hint" data-mode-hint></p>
       </div>
 
       <div class="field combo">
@@ -20,7 +21,12 @@
                value="{{ fahrt.origin if fahrt else '' }}"
                data-stop-input data-stop-target="#origin_stop_id">
         <input type="hidden" id="origin_stop_id" name="origin_stop_id"
-               value="{{ fahrt.origin_stop_id if fahrt and fahrt.origin_stop_id else '' }}">
+               value="{{ fahrt.origin_stop_id if fahrt and fahrt.origin_stop_id else '' }}"
+               {% if fahrt and fahrt.origin_stop %}
+                 data-stop-type="{{ fahrt.origin_stop.stop_type }}"
+                 data-stop-lat="{{ fahrt.origin_stop.latitude }}"
+                 data-stop-lon="{{ fahrt.origin_stop.longitude }}"
+               {% endif %}>
         <p class="field-hint {{ 'matched' if fahrt and fahrt.origin_stop }}" data-stop-hint>{{
           "✓ " ~ fahrt.origin_stop.name ~ (", " ~ fahrt.origin_stop.municipality if fahrt.origin_stop.municipality else "")
           if fahrt and fahrt.origin_stop else "" }}</p>
@@ -33,7 +39,12 @@
                value="{{ fahrt.destination if fahrt else '' }}"
                data-stop-input data-stop-target="#destination_stop_id">
         <input type="hidden" id="destination_stop_id" name="destination_stop_id"
-               value="{{ fahrt.destination_stop_id if fahrt and fahrt.destination_stop_id else '' }}">
+               value="{{ fahrt.destination_stop_id if fahrt and fahrt.destination_stop_id else '' }}"
+               {% if fahrt and fahrt.destination_stop %}
+                 data-stop-type="{{ fahrt.destination_stop.stop_type }}"
+                 data-stop-lat="{{ fahrt.destination_stop.latitude }}"
+                 data-stop-lon="{{ fahrt.destination_stop.longitude }}"
+               {% endif %}>
         <p class="field-hint {{ 'matched' if fahrt and fahrt.destination_stop }}" data-stop-hint>{{
           "✓ " ~ fahrt.destination_stop.name ~ (", " ~ fahrt.destination_stop.municipality if fahrt.destination_stop.municipality else "")
           if fahrt and fahrt.destination_stop else "" }}</p>
@@ -47,6 +58,18 @@
         <p class="field-hint" data-line-hint>Halte oben wählen für Linienvorschläge.</p>
       </div>
 
+      <div class="field">
+        <label for="course">Kurs <span class="field-optional">(Richtung, Abfahrtszeit – optional)</span></label>
+        <input type="text" id="course" name="course" placeholder="z. B. Richtung Kleinzell, ab 14:32"
+               value="{{ fahrt.course if fahrt else '' }}">
+        <a class="btn secondary small" data-timetable-link target="_blank" rel="noopener"
+           style="margin-top: 0.5rem; align-self: flex-start;" aria-disabled="true">
+          🕒 Fahrplan öffnen
+        </a>
+        <p class="field-hint">Öffnet Google Maps (Öffis) für die gewählten Halte – dort den genauen Kurs
+          ablesen und hier eintragen.</p>
+      </div>
+
       <div class="field">
         <label for="trip_date">Datum<span class="required">*</span></label>
         <input type="date" id="trip_date" name="trip_date" value="{{ heute }}" required>

templates/base.html

@@ -67,6 +67,7 @@
       display: block;
     }
     label .required { color: var(--danger); margin-left: 2px; }
+    label .field-optional { color: var(--text-muted); font-weight: 400; margin-left: 2px; }
     .label-row { display: flex; justify-content: space-between; align-items: baseline; }
     .label-row a { font-size: 0.8rem; }
 
@@ -101,12 +102,20 @@
       width: 100%;
     }
     button:hover, .btn:hover { background: var(--accent-hover); }
-    button.secondary {
+    .secondary {
       background: transparent;
       border: 1px solid var(--panel-border);
       color: var(--text);
     }
-    button.secondary:hover { background: rgba(255,255,255,0.04); }
+    .secondary:hover { background: rgba(255,255,255,0.04); }
+    a.btn, a.btn:hover { display: inline-block; text-align: center; text-decoration: none; }
+    .btn.small {
+      width: auto;
+      padding: 0.45rem 0.8rem;
+      font-size: 0.85rem;
+      font-weight: 500;
+    }
+    .btn[aria-disabled="true"] { opacity: 0.5; pointer-events: none; }
 
     .divider {
       display: flex;

templates/dashboard.html

@@ -25,7 +25,10 @@
           <tr>
             <td>{{ f.trip_date.strftime("%d.%m.%Y") }}</td>
             <td>{{ f.transport_mode }}</td>
-            <td>{{ f.line or "–" }}</td>
+            <td>
+              {{ f.line or "–" }}
+              {% if f.course %}<br><span style="color: var(--text-muted); font-size: 0.8rem;">{{ f.course }}</span>{% endif %}
+            </td>
             <td>
               {{ f.origin }}{% if f.origin_stop %}<span class="stop-dot" title="Verifizierte Haltestelle"> ●</span>{% endif %}
               → {{ f.destination }}{% if f.destination_stop %}<span class="stop-dot" title="Verifizierte Haltestelle"> ●</span>{% endif %}