Better config validation handling for numerical values:
 * New node type Integer and Float
 * New expressions: min() and max()
merged branch jeanmonod/config-with-numeric-checks (PR #4714)

Commits
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71db836 Better config validation handling for numerical values:  * New node type Integer and Float  * New expressions: min() and max()

Discussion
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[2.2] [Config] Better handling for numerical values:

* New node type Integer and Float
* New expressions: ifLessThan(), ifGreaterThan(), ifInRange(), ifNotInRange()

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by fabpot at 2012-07-03T08:50:22Z

As I said on PR #4713, adding more method clutters the API without any big benefits. I'm -1 on the PR.

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by jeanmonod at 2012-07-03T08:54:36Z

I have been discuss it with @schmittjoh at the sflive, he was thinking it could be a good addition.
IMHO I think that if we want to encourage the usage of bundle configuration validation, we should make it as easy as possible to use...

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by jeanmonod at 2012-07-03T08:59:42Z

A real life example:

    ->scalarNode('max_nb_items')
        ->validate()
            ->ifTrue(function($v){
                return !is_int($v) || (is_int($v) && $v<1);
            })
            ->thenInvalid('Must be a positive integer')
        ->end()
    ->end()

could be replaced by

    ->integerNode('max_nb_items')
        ->validate()
            ->ifLessThan(1);
            ->thenInvalid('Must be a positive integer')
        ->end()
    ->end()

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by gnutix at 2012-07-03T09:03:06Z

I agree with @jeanmonod on this matter, the bundle configuration validation is already kind of a hassle to understand (and read), so it would be a good addition IMHO.

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by fabpot at 2012-07-03T10:54:32Z

@schmittjoh What's your point of view?

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by schmittjoh at 2012-07-03T14:10:37Z

The integer and float nodes are valuable additions imo which I wanted to add myself several times but simply did not have the time for.

As for the changes to the expression builder, I was not really passionate about them in Paris, but I did not mind either way. However, looking at this PR, I think they would be better implemented as methods on the definition builders, and validated directly by the nodes:

```php
$builder->integerNode('foo')->range(1, 4)->end();
$builder->integerNode('foo')->mustBeGreaterThan(5)->end();
```

This will also allow for these constraints to be introspected and added to generated documentation.

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by fabpot at 2012-07-03T17:57:25Z

@jeanmonod Can you take into account the comments by @schmittjoh?

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by jeanmonod at 2012-07-03T19:40:24Z

@fabpot Yes, I will try to move those 4 checks.

@schmittjoh If I put those tests into the ScalarNodeDefinition did you think it's ok? And did I have to make anything special for the documentation introspection?

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by schmittjoh at 2012-07-03T19:56:00Z

You can take a look at the EnumNodeDefinition, and the EnumNode. They are
pretty simple, and should give you a good idea of how to implement it.

On Tue, Jul 3, 2012 at 9:46 PM, Jeanmonod David <
reply@reply.github.com
> wrote:

> @fabpot Yes, I will try to move those 4 checks.
>
> @schmittjoh If I put those tests into the ScalarNodeDefinition did you
> think it's ok? And did I have to make anything special for the
> documentation introspection?
>
> ---
> Reply to this email directly or view it on GitHub:
> https://github.com/symfony/symfony/pull/4714#issuecomment-6744309
>

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by jeanmonod at 2012-07-03T21:37:18Z

OK, I just refactor as requested. At the end, I didn't add the range() check. It can be easily done by chaining min and max, like this:

    $builder->integerNode('foo')->min(1)->max(4)->end();

@schmittjoh can you have a look?

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by schmittjoh at 2012-07-03T21:48:17Z

Have you tested the builder API? Did you maybe forget to commit something?

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by jeanmonod at 2012-07-03T21:52:45Z

Yes you are right, I forget the definition

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by jeanmonod at 2012-07-03T22:15:45Z

OK, I realize now that I misunderstood the concept. I was thinking that a node was able to do self validation. But no, I will have to move my code to the node definition. So let's wait for a new commit...

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by jeanmonod at 2012-07-06T06:13:55Z

@schmittjoh I just push the move to definition and the new abstract class Numeric. Can you review it?

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by jeanmonod at 2012-07-10T05:12:59Z

@schmittjoh, @fabpot
I fix all the mention points, can you have a look at the final result?

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by schmittjoh at 2012-07-10T06:38:20Z

There are still some excessive blank lines if you want to be perfect, but overall looks good now.

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by jeanmonod at 2012-07-10T07:05:54Z

@schmittjoh I think the comments of @Baachi are not well placed in the diff. I execute php-cs-fix on all code, so level of perfectness is already good ;)

@fabpot Do you want some more complements before merging?

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by fabpot at 2012-07-10T07:07:21Z

@jeanmonod I'm going to review the code once more and it will be merged for 2.2. Thanks for your work.

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by fabpot at 2012-09-18T13:58:48Z

@jeanmonod Can you squash your commits before I merge? Thanks.

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by jeanmonod at 2012-09-18T14:36:59Z

@fabpot Squash done

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by fabpot at 2012-09-19T04:07:13Z

@jeanmonod One last thing: can you submit a PR on symfony/symfony-docs that update the documentation with the new possibilities?

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by jeanmonod at 2012-09-20T05:32:01Z

@fabpot OK, Documentation PR done here: https://github.com/symfony/symfony-docs/pull/1732
[Config] fixed CS
updated CHANGELOG