How to generate GraphQL Schema from schema.graphql file in PHP - php

Question

I have created the schema.graphql file in PHP using the following code:
$data = SchemaPrinter::doPrint($schema);
file_put_contents('/var/cache/Graphql/schema.graphql', $data);
Now I want to create new schema using this file content. How to achieve this?

Answer 1

I have created the schema from schema.graphql using the BuildSchema::build().
By default, such schema is created without any resolvers. So we need to define our custom resolvers as follows:
$contents = file_get_contents($this->projectDir.'/config/schema.graphql');
$typeConfigDecorator = function($typeConfig, $typeDefinitionNode) {
$name = $typeConfig['name'];
if ($name === 'Query') {
$typeConfig['resolveField'] =
function ($source, $args, $context, ResolveInfo $info) {
if ($info->fieldDefinition->name == 'login') {
if ($args['userName'] === 'test' && $args['password'] === '1234') {
return "Valid User.";
} else {
return "Invalid User";
}
} elseif ($info->fieldDefinition->name == 'validateUser') {
if ($args['age'] < 18) {
return ['userId' => $args['userId'], 'category' => 'Not eligible for voting'];
}
}
}
}
;
}
return $typeConfig;
};
$schema = BuildSchema::build($contents, $typeConfigDecorator);