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Submit a Pull Request Report a Bug. This post is with regards to handling forms that have more than one submit button. This works fine, except when we want to pass more information with the click of this particular button. Imagine a scenario where you're dealing with user management in some administrative interface.
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Adding a marker icon at a certain point on the map is easy — you just need to create a new marker using the google. Marker constructor, passing it an options object containing the position to display the marker at as a LatLng object , and the Map object to display it on. Now if you refresh your page, you'll see a nice little marker pop up in the centre of the map. This is cool, but it is not exactly a custom marker — it is using the default marker icon. To use a custom icon, we need to specify it when we create the marker, using its URL.
Whenever a resource conflict would be caused by fulfilling the request. Duplicate entries and deleting root objects when cascade-delete is not supported are a couple of examples. Slein, J. Reliable, interoperable negotiation of Upgrade features requires an unambiguous failure signal. The Upgrade Required status code allows a server to definitively state the precise protocol extensions a given resource must be served with. Its typical use is to avoid the "lost update" problem, where a client GETs a resource's state, modifies it, and PUTs it back to the server, when meanwhile a third party has modified the state on the server, leading to a conflict. By requiring requests to be conditional, the server can assure that clients are working with the correct copies. The status code is optional; clients cannot rely upon its use to prevent "lost update" conflicts.