Deserialize array of object using jms/serializer

Question

I want to deserialize something like this:

[
    { "id": 42 },
    { "id": 43 }
]

Any idea how to do this?

You may start from the documentation: http://jmsyst.com/libs/serializer/master/usage — zerkms, Jun 11 '17 at 08:56
I read all the documentation and did not find any this for this... The only solution I found is to create an other class a do something like this: `@Type("array")` but it does not work since the array should have a key to work — mykiwi, Jun 11 '17 at 08:58
So if it doesn't belong to an entity, its just json - so what is wrong with using php's json_decode? — Jenne, Jun 11 '17 at 09:04
The goal of using jms/serializer is to transforme json string into your objects, not stdClass like when using json_decode — mykiwi, Jun 11 '17 at 09:05
`$serializer->deserialize($json, 'array', 'json');` ? Where `T` is the type with `id` property. — zerkms, Jun 11 '17 at 09:38
Almost, but thanks ! It work with `deserialize($json, "array")` you can post the answer if you want. — mykiwi, Jun 11 '17 at 09:44

score 34 · Accepted Answer · edited Apr 03 '18 at 19:17

34

It would be

$serializer->deserialize($json, 'array<T>', 'json')

where T is the name of the class with the id property.

edited Apr 03 '18 at 19:17

Christian

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answered Jun 11 '17 at 21:42

zerkms

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Is there a way to preserve keys (ex: `[123=> { "id": 42 }, 234=>{ "id": 42 }]` ) within the array? This worked for me but the keys are reset (starting from 0) – ka_lin Sep 09 '20 at 11:36
1

Figured it out: `$this->serializer->deserialize($result, 'array>', 'json')` – ka_lin Sep 09 '20 at 12:19

score 0 · Answer 2 · answered Jul 18 '22 at 18:10

Let's say you have a class foo, that has an attribute with an array of bar objects.

In your foo class use JMS\Serializer\Annotation\Type as Type; and annotate the attribute like this:

use JMS\Serializer\Annotation\Type as Type;
class foo {
    /**
     *
     * @Type("array<int,Namespace\To\Class\Bar>")
     * private $bars = array();
     */
 }

JMS Serializer will serialize/deserialize the contents of foo automagically. This use of @Type should be utilized for all attributes of any classes you will be serializing/deserializing.

This also works in situations where you are using string keys (ie. associative array structure). Just substitute "string" for int.

@Type("array<string,Namespace\To\Class\Bar>")

Deserialize array of object using jms/serializer

2 Answers2