how to use current() in identity()

[plandolt]

I found the documentation about identity and its use of variables in it. I also found several issues regarding using current() in identity(). Still I did not manage to get it working.

As far as I could read in the issues it has been implemented. So... Can anyone provide an example? As a bonus you could in that case directly add a PR explaining it in the docs.

[theofidry]

Hello,

identity() is a simple "faker" function, not provided by faker natively, but by a Faker provider still: IdentityProvider.

You have a piece of doc here, but I agree it could be better. However here's some examples:

Nelmio\Entity\User:
  user1:
    username: 'testuser'
    fullname: '<identity($username)>'
  user2:
    username: 'test_user'
    fullname: '<identity(str_replace("_", " ", $username))>'

<current()> is also explained here. Same I think it could be better so any PR to help is welcomed :)

In short, <current()> can be used when dealing with a fixture collection such as user_{1..10} or user_{alice, bob} and returns the "current" value of the collection:

Nelmio\Entity\User:
  user_{1..10}: # creates 10 users "user_1", ..., "user_10"
    username: '<current()>' # will be "1", ..., "10"
  user_{alice, bob}: # creates two users "user_alice" and "user_bob"
    username: '<current()>' # respectively "alice" and then "bob"

If my memory serves me right, it throws an exception if you try to use <current()> outside of that context (needs to be checked).

Best,

[plandolt]

Hi @theofidry

Thanks for your response. I know both features <identity()> and <current()>. But what I still dont know about how to use both at the same time. I try to have <current()> subtracted with 2.

What I want to achieve is this (which is not working):

Acme\Entity\User:
  user_ {3..10}:
    anything: <identity(<current()> - 2)>

Is there a syntax which will give me 1..8 or is this not possible at all?

[theofidry]

Ah, as mentioned in #360 the correct syntax would be '<identity(current() - 2)>' but I couldn't test if it was working or not... :/

[plandolt]

I just gave it a try but did not work:

[Symfony\Component\Debug\Exception\ContextErrorException]
Warning: current() expects exactly 1 parameter, 0 given

[theofidry]

Indeed, I'm not sure why I couldn't find much after a bit of debugging. I'm honestly not sure that this will be fixed in v2. In the meantime what you can do is having a provider to do the calculation:

Acme\Entity\User:
  user_ {3..10}:
    anything: '<anything(current())>'

[plandolt]

Not sure if that works as <identity(current())> did not. But I'll give it a try when i come across this issue again.

[theofidry]

Erf, I don't know then. I can only make sure that this will be fixed in v3 for now. If I find a fix on the way I'll make sure to include it.

[theofidry]

Closing in favour of #360