为什么$ request-> get（）返回null？

I am sending a post request to laravel via an angularjs form,

AngularJS:

<input type="text" ng-model="app.person.firstName">
<input type="text" ng-model="app.person.lastName">

$http.post('/tests', person).success(function(data) {
    console.log(data);
  }).error(function() {
    console.log("Oh no!");
});

Laravel with $request->all() (works):

 $input = $request->all();
 $first = $input['firstName'];
 $last = $input['lastName'];
 ....
 return json_encode($this->data_object);
 // returns correct object

Laravel with $request->get() (returns null):

 $input = $request->get('firstName');
 return json_encode($input);
 // returns null

Why does $request->get('firstName') return null when $request->all() returns an object with a firstName index?

There's currently a bug in Laravel where $request->get() only works for actual GET and POST data.

It doesn't work when the post body is JSON (which is what Angular does).

You can use $request->input('firstName') instead.