控制器属性不能包含非标量\ /非空值

Question

I would like to provide my controller object like this with hinclude.js :

{{ render_hinclude(controller("AppBundle:Default:Test"), { 'object': my_object }) }}

Unfortunately I got this error:

"An exception has been thrown during the rendering of a template (\"Controller attributes cannot contain non-scalar/non-null values (value for key \"my_object\" is not a scalar or null).\")

Can you help me ?

Thanks in advance !

Answer 1

The exception is right, only scalar/null values are allowed to pass for controller attributes when render_hinclude() is used, because is needed to generate a valid fragment URI from them.

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Why?

Suppose you try to pass this entity with private properties, when it comes to generate the URI for this parameter happens the following:

var_dump(http_build_query(array('object' => $my_object)))

// output: 
// string(0) ""

http://php.net/manual/en/function.http-build-query.php#refsect1-function.http-build-query-parameters

If query_data is an object, then only public properties will be incorporated into the result.

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BTW the statement that you provided is not valid, you should pass this attribute to controller(...) function, something like this:

{{ render_hinclude(controller("AppBundle:Default:test", {'id': my_object.id })) }}

Then, your controller should have the scalar value id and get the corresponding object. However, use the argument resolver feature to avoid this step:

public function testAction(Object $object) {...}

Next:

{{ render_hinclude(controller("AppBundle:Default:test", {'object': my_object.id })) }}