Set Uuid

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Okay. The UUID is now the identifier inside of our User resource. Awesome. But it's still working exactly like the old ID. What I mean is only the server can set the UUID. Alright. If we tried to send you UUID as a field, when we recur, when we're creating an user, it would not work. How do I know? Because if you look at our user class, $uuid is not settable anywhere. It's not an argument that constructor and there's no setUuid() fields. So I know that it's definitely not going to be settable in our API, but I do want to make that possible. Let's describe this in a test first. So in UserResourceTest I'm going to go up to the top and copy testCreateUser().

Is that down here? And we'll call it, testCreateUserWithUuid(). And we'll just kind of simplify this a little bit down here for the JSON. And in addition to the other fields, I'm not going to pass you. 'uuid' => '' and for UUID let's actually set one up here. So I'll say $uuid = Uuid. You're the one from Ramsey\. uuid4() And then down here, I will send that $uuid field and I technically could call toString() on it, but it has an __toString(). So don't actually have to do that then, or assert a certain service code is two Oh one and down here, I will take out these, uh, profession, user object stuff. Cause I can just basically assert the @id is going to be /api/users/ and then that $uuid and I'll also take out the login part, make sense.

We send to UUID. It should use that UUID. So I'll talk top copy of this method name here and let's spin over and run

synfony php bin/phpunit --filter=testCreateUserWithUuid

and perfect. It doesn't work. It's just completely ignoring the UID that we're sending and then choosing a different one. Okay. So how, how can we make the UID a field that is settable? Well, it's really no different than any other field of we're going to make it settable. We need to put it inside of the correct group and make sure that it's set, make sure that it's set of all either through the constructor or via setter method. Now we could add a setter like a setUuid(), but then we would need to be careful to add the correct groups to it.

So that it's writeable when we create a user, but not modifiable later, we don't want you, you ideas to change after the creative or we can do something that's a little more, a little bit more natural. We could avoid the setter, but then add it as an argument to our constructor. If it's only available as an argument to an instructor, then naturally it's not going to be something that's going to be updatable because there's simply no way to update it. So let's do that. I'll add a UuidInterface $uuid argument. And I'll set that to null. And then down here, I'll say $this->uuid = and I'll say you $uuid ?: and then Uuid:uuid4() so if it has passed, we'll use that. If it's not passed, then we'll generate a random one. And then we need to make sure that the UUID is actually part as rideable in our API. So up here on our, you, your ID field, I will add @Groups() and inside of here, I'm going to say user:write So it is writeable. But of course, if it's not going to be edited, you know, you can only send it when we're creating an object. You can't change it afterwards.

All right. So now if we run the test,

synfony php bin/phpunit --filter=testCreateUserWithUuid

it passes, it works. That was awesome. And the documentation for this instantly looks perfect. Let's try, I'll refresh the API homepage. Then open up the post operation for users hit, tried out and you can see it's already kind of giving me a UID example here understands that this is a and it is available at for us to set, but wait a second. How did that work? Because if you think about it, if you look at our test, we're sending a string, of course, but ultimately on our User object, the first argument, the __constructor() is some sort of UuidInterface object, not a string.

Remember API platform. Well really Symfonys. See serializer system is really good at reading your types. So in notice that the type for $uuid is UuidInterface, and then it found, try to find a deserealizer, or that knows how to deserealize fields into you. UuidInterface objects in ApiPlatform comes with a deserealizer for Ramsey. You UUIDs out of the box. That is why that worked by the way, there is one little quirk with you UUIDs and that is they can't be called ID. Let me show you what I mean head up to the year. You're already a property and let's pretend that we just want to call this ID, uh, in the, uh, API. So for example, instead of sending you a field called, uh, your ID here, I just want that to be called ID. So to make that happen, I can add an @SerializedName("id") and then over my test, it simply means that I just need to change that field, right? We've done this type of thing before. Normally that works fine, but if we rerun that test,

synfony php bin/phpunit --filter=testCreateUserWithUuid

it fails and it says an Erik or an update is not allowed for this operation. So this is basically a bog /complex area inside of a API platform where in the JSON, and right now there's not a fix for it. There is a workaround. However, whenever you send the data, the APM platform, it tries to figure out what format you're sending it.

You know, for example, if we send XML, we would need to tell it, uh, it would need to know that that's XML. So we can DC to realize it and back smelt by default and assume that you're sending JSON, however, in the same way that you can get content back as, uh, as JSON or JSON LD. So for example, by default, we get back JSON LD format. So when we use an API and point blank /APSs Jesus, we can get things back as JSON L D, or we can actually get things back as JSON. So there's when you request a resource, you can tell it what outputs you want. You can actually do the same thing. When you send an input, you can actually send it data and say, the data I'm providing you is JSON or XML. Now it doesn't make much difference on the input format, but you can actually tell API platform that I'm sending you JSON LD format of data versus JSON.

And if you do that, that actually makes just a small enough difference in how the, how the content is DC realized that it avoids this air. There's a long way of saying that the workaround ground for this is actually descend a content type header. So in the test, I'll set headers and I'll set that and I'll send that to an array with Content-Type set to Application/ld+json, we're trying to test out it passes now, to be honest with you, I don't really know if that makes any other changes in how our objects do seem to realize it doesn't seem to, um, but full disclosure. I don't know that for sure it does around this bug. So the destabilization logic is slightly different internally when you're passing this, now this work ground works great. If you are the only person using your own API, because you just need to know to include this header. But if other people are going to be using your API, then it's kind of ugly for them to have to pass this content type header to avoid that error. So another workaround is actually to disable the JSON format entirely in always forced JSON LD.

So I'm actually gonna do is remove this header here, and then I'm going to go into config/packages/api_platform.yaml and down here, I'm going to comment out the json format. Now, as soon as I do that, whenever we send JSON input, it's going to use JSON LD is the default format instead of JSON. There's one other spot I need to change just so I don't get an error. If I go into entity, CheeseListing, uh, an uh, past tutorial, we actually, uh, set specific formats for one of our operations. No, was that specific format for this? I'm actually going to remove JSON from the list and since no longer even available as a global format. So now I'm not passing the header anymore and

synfony php bin/phpunit --filter=testCreateUserWithUuid

it still fails.

Oh, of course, huh? Because forgot. I need to actually keep this line right here. There we go. So this tells it, if we send data applications, that's JSON use this type course. That's the piece that I was missing.

synfony php bin/phpunit --filter=testCreateUserWithUuid

It's now it's going to interpret that as using the JSON LD format when we sign it and now I pass this. So I just want to be aware of that limitation and that workaround. I'm actually going to remove all of this and, uh, and be content with using just you UID. So I'll put that format back. I will re add it to my JSON and then over inside my resource, I'm actually going to remove that serialized name so we can get back to the good spot.

Okay. That's it. Whoa. We just like API platform and really rest in general to another level of flexibility with custom fields, custom API resources, and a lot more in the next course, we'll dive a bit deeper into one last area we haven't talked about yet, which is true custom end points, uh, including custom end points that are done in a controller and also custom end points that are done with messenger integration and Symfony. And if there is something that we still haven't talked about yet, that you really want to know about, let us know in the comments. Okay. Go make some awesome JSON, and we'll see you next time.

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What PHP libraries does this tutorial use?

// composer.json
    "require": {
        "php": "^7.2.5",
        "ext-ctype": "*",
        "ext-iconv": "*",
        "api-platform/core": "^2.1", // v2.5.7
        "doctrine/annotations": "^1.0", // 1.10.4
        "doctrine/doctrine-bundle": "^2.0", // 2.1.2
        "doctrine/doctrine-migrations-bundle": "^3.0", // 3.0.1
        "doctrine/orm": "^2.4.5", // v2.7.3
        "nelmio/cors-bundle": "^2.1", // 2.1.0
        "nesbot/carbon": "^2.17", // 2.39.1
        "phpdocumentor/reflection-docblock": "^3.0 || ^4.0", // 4.3.4
        "ramsey/uuid-doctrine": "^1.6", // 1.6.0
        "symfony/asset": "5.1.*", // v5.1.5
        "symfony/console": "5.1.*", // v5.1.5
        "symfony/debug-bundle": "5.1.*", // v5.1.5
        "symfony/dotenv": "5.1.*", // v5.1.5
        "symfony/expression-language": "5.1.*", // v5.1.5
        "symfony/flex": "^1.1", // v1.9.6
        "symfony/framework-bundle": "5.1.*", // v5.1.5
        "symfony/http-client": "5.1.*", // v5.1.5
        "symfony/monolog-bundle": "^3.4", // v3.5.0
        "symfony/security-bundle": "5.1.*", // v5.1.5
        "symfony/twig-bundle": "5.1.*", // v5.1.5
        "symfony/validator": "5.1.*", // v5.1.5
        "symfony/webpack-encore-bundle": "^1.6", // v1.7.3
        "symfony/yaml": "5.1.*" // v5.1.5
    "require-dev": {
        "doctrine/doctrine-fixtures-bundle": "^3.3", // 3.3.2
        "symfony/browser-kit": "5.1.*", // v5.1.5
        "symfony/css-selector": "5.1.*", // v5.1.5
        "symfony/maker-bundle": "^1.11", // v1.21.1
        "symfony/phpunit-bridge": "5.1.*", // v5.1.5
        "symfony/stopwatch": "5.1.*", // v5.1.5
        "symfony/twig-bundle": "5.1.*", // v5.1.5
        "symfony/web-profiler-bundle": "5.1.*", // v5.1.5
        "zenstruck/foundry": "^1.1" // v1.1.2