使用Laravel从提交中返回一条用于验证和成功的flash消息

Question

I am of the understanding after doing research that JSON is used however I am unsure of the processes. The code below is my AJAX the console log after.done is not currently working however it was working when I had success as part of the AJAX object.

AJAX

      $(document).on('click', '#button', function() {
      var wrap = $(this).closest('div.form_wrap');
      wrap.find('form').each(function() {

          var id = $(this).prop('id');
          var arr = jQuery.makeArray( "#"+id );
          var url = $(this).attr('action');
          var type = $(this).attr('method');
          var i = $('#'+id); // Or just $(this)
          var data = i.serialize();

    // setup on submit 
          i.submit(function(event) {
        event.preventDefault();
        var formElem = $(event.currentTarget);

    console.log(data);
    $.ajaxSetup({
        headers: {
            'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content')
        }
    });

              $.ajax({
                  type        : type, 
                  url         : url, 
                  data        : data,
                  dataType    : 'json',
                  encode      : true
                })
                  .done(function(data) {              
                      console.log(data);         
                  });     
        });

        i.submit();
      });
        });

Controller

public function store(Request $request)
    {

        //validate
        $this->validate($request, array (
            //'exercise' => 'required|unique:workout_goals,user_id,NULL,id,exercise,'.$request->exercise,
            //'reps' => 'required|integer',
            //'exercise' => 'required|unique:workout_goals,exercise,NULL,id,user_id,'.$request->user_id,          
        ));

        //store
        $post = new workout_shared;
        $post->date = $request->date;
        $post->user_id = $request->user_id;
        //$post->shared_id = $request->shared_id;
        $post->exercise = $request->exercise;
        $post->weight = Input::get( 'weight' );
        $post->reps = $request->reps;
        $post->sets = $request->sets; 

        //save
        $post->save();


        //session flash message
        Session::flash('success','Workout shared!');

        //redirect


        return back();
    }

Thanks

Answer 1

$.done will only be called after a successful ajax call, so you are probably receiving an error while calling that url. Use $.fail to catch this error:

$.ajax(...)
 .done(function(){ console.log("Done!"); })
 .fail(function(jqXHR, textStatus, errorThrown){ 
    console.log("Fail!", jqXHR, textStatus, errorThrown); 
 });

Setting a Session::flash() will store this message in the session for the next http request, to retrieve this message use this on the next page displayed:

Session::pull(...)

However as you are calling with ajax you will need to return the message as JSON as you said. I would also recommend something along the lines of this to deal with your save method, and then implement either a flash message or json depending on how the method is called:

...

// Save 
$result = $post->save(); // return a boolean for success/fail
$message = $result ? "Workout shared!" : "Workout sharing failed!";

// Response
if ($request->ajax())
{
    // Ajax response, will translate to JSON
    return new Array(
       'Success' => $result,
       'Message' => $message
    );
}

// Regular Http response
Session::flash('save-response', $message);

// Redirect
...

A further step would be to extract the entire response section of this code to a new method, which could then also be used after validation, such as:

WorkoutSaveResponse($result, $message)