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Lazy loading for arguments #429

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Lazy loading for arguments #429

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4dfb2d0
Field arguments lazy loading
mad-ice Jan 7, 2019
0b1f0c2
Missed throws in docblock
mad-ice Jan 7, 2019
88b62c4
Removed .idea from gitignore
mad-ice Jan 7, 2019
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2 changes: 1 addition & 1 deletion .gitignore
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Original file line number Diff line number Diff line change
Expand Up @@ -3,4 +3,4 @@ composer.lock
composer.phar
phpcs.xml
phpstan.neon
vendor/
vendor/
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we're missing a line feed

If you're using Jetbrains IDE, it can be automatically handled by Editor -> General -> Other

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14 changes: 12 additions & 2 deletions src/Type/Definition/FieldArgument.php
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Expand Up @@ -8,6 +8,7 @@
use GraphQL\Language\AST\InputValueDefinitionNode;
use GraphQL\Utils\Utils;
use function is_array;
use function is_callable;
use function is_string;
use function sprintf;

Expand Down Expand Up @@ -66,12 +67,21 @@ public function __construct(array $def)
}

/**
* @param mixed[] $config
* @param mixed[]|callable $config
*
* @return FieldArgument[]
* @throws \InvalidArgumentException
*/
public static function createMap(array $config)
public static function createMap($config)
{
if (is_callable($config)) {
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@shmax shmax Oct 16, 2019 •
edited
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Sorry for the long delay, but as promised I tried out your changes. So far I don't quite understand how this changes things; createMap is called by the FieldDefinition constructor, and then you just check to see if $config is callable, and if it is you immediately call it? Where do the savings come in?

I tested this by converting a few of the args on my top-level Query fields to functions, and stuck breakpoints inside them; they get called immediately.

What am I missing, here? Where does the "lazy" happen?

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I just POC'ed my own full lazy loading concept; so far seems to work pretty well. I'll try to put together a PR by the end of the week.

$config = $config();
}

if (! is_array($config)) {
throw new \InvalidArgumentException('$config must be an array or a callable which returns such an array.');
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Suggested change
throw new \InvalidArgumentException('$config must be an array or a callable which returns such an array.');
throw new \InvalidArgumentException('"$config" must be an array or a callable which returns such an array.');

}

$map = [];
foreach ($config as $name => $argConfig) {
if (! is_array($argConfig)) {
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4 changes: 2 additions & 2 deletions src/Type/Definition/FieldDefinition.php
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Expand Up @@ -109,9 +109,9 @@ public static function defineFieldMap(Type $type, $fields)

$field['name'] = $name;
}
if (isset($field['args']) && ! is_array($field['args'])) {
if (isset($field['args']) && ! is_array($field['args']) && ! is_callable($field['args'])) {
throw new InvariantViolation(
sprintf('%s.%s args must be an array.', $type->name, $name)
sprintf('%s.%s args must be an array or a callable which returns such an array.', $type->name, $name)
);
}
$fieldDef = self::create($field);
Expand Down