Transient attribute as count parameter

[Jacob Evelyn]

Is it possible to use a transient attribute as a count parameter?

For instance, something like:

Fabricator(:foo) do

  transient n_iterations: 5

  bars { |attrs| bars(count: attrs[:n_iterations]) { Fabricate(:bar) } }

end

[Paul Elliott]

Hey Jacob,

It sure is. There is no syntax for setting defaults (yet) so you would have to do it like this:

```ruby

Fabricator(:foo) do

  transient :n_iterations

  n_iterations 5

  bars …

end

```

-- Paul

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[Jacob Evelyn]

Ah, thanks for the help! Just a head's up, the fabrication website seems to say that that default-setting syntax is valid.

[Jacob Evelyn]

Actually, I don't seem to be able to get this working. Is the syntax I had (other than the default transient value) correct? Even without the transient, this format:

bars { |attrs| bars(count: 5) { Fabricate(:bar) } }

is giving me a NoMethodError complaining about the bars method.

[Paul Elliott]

It should be:

```ruby

bars(count: 5) { Fabricate(:bar) }

```

-- Paul

[Paul Elliott]

Actually, you're right. Version 2.7.0 had the transient default feature. I think your problem may have been caused entirely by `bars`. Fix that and revert back to the default transient code and you should be all set.

-- Paul

[Jacob Evelyn]

Sorry, I'm not sure I understand. My understanding is that I need to be in a bars block to access the transient attribute, but from within that block I can't create a collection of bars with the bars method. If you could post a full code snippet of how to do this it would be hugely helpful.

Thanks for all the help.

[Paul Elliott]

Oh, sorry for the confusion. You were trying to redeclare the bars block inside the bars block. Instead you need to do your own iteration and return an array. Here is what the whole thing should look like:

```ruby

Fabricator(:foo) do

  transient n_iterations: 5

  bars { |attrs| (1..attrs[:n_iterations]).map { Fabricate(:bar) } }

end

```

-- Paul

[Jacob Evelyn]

Ah right, of course. Forgot that I can still use Ruby. :)

Thanks for the help!