Question

I wanna set up a way in which users can place a marker on the map to tell their address and i should be able to extract the lat and long and store it in the database.

Is there somekinda plugin which i can modify and use ?

Answer 1

First create a function that a accepts a latlng object. This function will add the info to your database and then add the marker if it was successful.

function addRestaurant( latlng ) {
    lat = latlng.lat;
    lng = latlng.lng;
    //Code to add restaurant
    if ( dbase_successful ) {
        var marker = new google.maps.Marker({
         position: latlng,
         title: "Some text"
            map: map //make your map global
        });
    }
}

Then add an event listener on the click event of the map that calls the function you just created. Add this to your map initialize code.

google.maps.event.addListener(map, 'click', function(event) { addRestaurant( event.latlng ) } );

Now when your map is clicked add_restaurant will be called with the latlng of the click event on the map.