Pass PHP array onto Vue component using props

Question

• Building a Laravel app with a few Vue components
• Want to pass a PHP array onto a Vue component using props

Here's an example of such PHP array:

["Foo" => 100, "Bar" => 50]

Great. Here's my attempt at passing them onto the Chart component:

<Chart points="{!! json_encode($points) !!}"></Chart>

This looks fine, but the strings (Foo and Bar) inside the $points array get encapsulated with " (double quotes) when using json_encode() . This means that whenever the 1st string appears in the array, the browser thinks that the " is meant to close the points attribute.

Here's what you get to see in the browser:

<Chart points="{">Foo":100,"Bar":50}"</Chart>

How do I go about this? I have been struggling with this for hours now, and I can't wrap my head around it.

• Can't use " (double quotes) since the browser interprets it as the closing quote for an attribute and messes up the HTML
• Can't use ' (single quotes) since that's invalid JSON (and json_encode doesn't support it)

Answer 1

<Chart points='{!! json_encode($points) !!}'></Chart>

只需使用单数引号。

Answer 2

Although reading previous answers this took me a while to get working. So, here's what works for me with Laravel 5.5 and VueJs 2.5:

1. Convert your PHP array to a JSON serialized string.

   For PHP arrays see json_encode .
   For Eloquent collections see the Eloquent method toJson .
   For further reference we call this new JSON string $arrayAsJSON .

2. In your view (or Blade template):

    <some-vue-component :componentProperty="{{ $arrayAsJSON }}"></some-vue-component> 

3. The Vue Component:

    <template></template> <script> export default { props: ['componentProperty'], mounted() { console.log('some-vue-component mounted.'); console.log(this.componentProperty) }, } </script> 

Answer 3

可以使用正式方式：

<Chart points='<?php echo json_encode($points); ?>'></Chart>

Answer 4

从Laravel 5.5开始，您可以使用@json指令。

<Chart points=@json($points)></Chart>