Is there anything wrong with the code below? The markers are not showing up in the map.

function addMarker(place)

var latLng = {lat: parseFloat(place.latitude), lng: parseFloat(place.longitude)};

var marker = new google.maps.Marker({
      position: latLng,
      map: map,
      title: 'Hello World!'


This can happen if latitude and/or longitude are TEXT columns. They need to be NUMERIC columns, otherwise the select SQL in the update route returns no rows and addMarker doesn't get called.

  • the latitude and longitude are both numeric (i have tried making them real as well) but it doesnt work. In the js console in chrome i get a "internal error 500". RuntimeError: (sqlite3.OperationalError) no such column: longitude [SQL: 'SELECT * FROM places\n WHERE 42.326382141580844 <= latitude AND latitude <= 42.427577090806075 AND (-71.25743593750002 <= longitude AND longitude <= -70.99376406250002)\n GROUP BY country_code, place_name, admin_code1\n ORDER BY RANDOM()\n LIMIT 10'] – Vikrant Pradhan Apr 22 '17 at 13:32
  • Sounds like the column in mashup.db is not named 'longitude'. Check for a spelling difference. – DinoCoderSaurus Apr 22 '17 at 14:58
  • the spellings are the same. – Vikrant Pradhan Apr 22 '17 at 15:02
  • Then maybe you have 2 databases? That error message is very specific. Paste the .schema places result from sqlite3 mashup.db run from the same directory where you execute flask run into the question. – DinoCoderSaurus Apr 22 '17 at 15:12
  • i recreated the places table from scratch and now its working. Anyways thank you. – Vikrant Pradhan Apr 22 '17 at 15:36

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