How to pass laravel CSRF token value to vue

A better way is simply to pass the csrf token via a slot into the vue component.

In blade.php file:

@extends('layouts.app')

@section('content')
          <my-vue-component>
            {{ csrf_field() }}
          </my-vue-component>
@endsection

In MyVueComponent.vue

   <form role="form">
       <slot>
         <!-- CSRF gets injected into this slot -->
       </slot> 
       <!-- form fields here -->
    </form>

Very Easy Solution Just add a hidden field inside the form. An Example

<form id="logout-form" action="/logout" method="POST" style="display: none;">
    <input type="hidden" name="_token" :value="csrf">
</form>

Now add csrf variable inside script at the vue file, like this. (Remember, it must be inside data).

<script>
     export default {
        data: () => ({
            csrf: document.querySelector('meta[name="csrf-token"]').getAttribute('content'),
          }),        
    }
</script>

N.B. You will see a meta tag in your blade.php file like this.

<!-- CSRF Token -->
<meta name="csrf-token" content="{{ csrf_token() }}">

If there is nothing like this, you need to place it there.

My solution to this is that all vue components get csrf token right before a request is made. I put this in my bootstrap.js file.

Vue.http.interceptors.push((request, next) => {
   request.headers.set('X-CSRF-TOKEN', CoolApp.csrfToken);
   next();
});

Then have a class CoolApp.php

    public function getScriptVariables()
    {
      return json_encode([
          'csrfToken' => csrf_token(),
      ]);
    }

I solved it thanks to these two answers:

1) First I read this one, which led me to

2) This second one.

So, in my form I keep this:

{{ csrf_field() }}

And inside the js file I only add the following (outside and above the Vue instance):

var csrf_token = $('meta[name="csrf-token"]').attr('content');

So the whole js code is:

var csrf_token = $('meta[name="csrf-token"]').attr('content');
    /*Event handling within vue*/
    //when we actually submit the form, we want to catch the action
    new Vue({
        el      : '#timeline',
        data    :   {
            post    : '',
            token   : csrf_token,
        },
        methods : {
            postStatus : function (e) {
                e.preventDefault();
                console.log('Posted: '+this.post+ '. Token: '+this.token);
                $.ajax({
                    url         :   '/posts',
                    type        :   'post',
                    dataType    :   'json',
                    data        :   {
                        'body'  :   this.post,
                        '_token':   this.token,
                    }
                });
            }
        },
    });