英文:
How with predis to write data in tree structure?
问题
我明白你需要的只是代码部分的翻译。以下是翻译好的代码部分：
更新的块1:
我将示例代码复制到我的应用程序中：
$data = ['name' => 'John Doe','email' => 'johndoe@example.com','address' => ['street' => '123 Main St','city' => 'Anytown','state' => 'CA','zip' => '12345']];Redis::hmset('user:1', $data); // 错误指向了这一行173
但我收到了错误：
php artisan job:dispatchNow ArticlesCachingJobErrorExceptionArray to string conversion在 vendor/predis/predis/src/Connection/StreamConnection.php 的第365行
- 我在代码中进行了调试，并在vendor/predis/predis/src/Connection/StreamConnection.php文件中添加了2行日志记录：
public function writeRequest(CommandInterface $command) // 第352行{$commandID = $command->getId();$arguments = $command->getArguments();$cmdlen = strlen($commandID);$reqlen = count($arguments) + 1;$buffer = "*{$reqlen}\r\n${$cmdlen}\r\n{$commandID}\r\n";foreach ($arguments as $argument) {\Log::info(' $argument::');\Log::info($argument);$arglen = strlen(strval($argument));$buffer .= "${$arglen}\r\n{$argument}\r\n";}$this->write($buffer);}
-
我尝试用serialize方法包装'address'数组 - 它正常工作，这是我在phpRedisAdmin中看到的：https://prnt.sc/BMnRev9HDwZz
-
是否必须对所有子数组使用serialize方法？
-
我有Redis服务器 v=5.0.7 sha=00000000:0 malloc=jemalloc-5.2.1 bits=64 build=66bd62
在Kubuntu 20.04下
更新的块2:
我尝试了两种方法：
$data = ['name' => 'John Doe','email' => 'johndoe@example.com','address' => (object)['street' => '123 Main St','city' => 'Anytown','state' => 'CA','zip' => '12345']];Redis::hset('user:1', $data);
和
$data = ['name' => 'John Doe','email' => 'johndoe@example.com','address' => ['street' => '123 Main St','city' => 'Anytown','state' => 'CA','zip' => '12345']];Redis::hset('user:1', (object)$data);
两者都导致错误：
Array to string conversion在 vendor/predis/predis/src/Connection/StreamConnection.php 的第365行
看起来任何值都必须是字符串（或序列化的字符串）？
谢谢！
英文:
Reading some manuals on redis I see that tree data are possible, like root object and nested inserted objects.
But when in laravel 9.4 app with predis/predis 2.1 I write data with
Redis::set('key', serialize( $data ) );
method and in phpRedisAdmin I see that all written data are written (with redis=>prefix parameter from config/database.php) on the same level,
but not root object and nested inserted objects.
Which methods have I to use for data wring and tools to view data in tree structure ?
UPDATED BLOCK 1:
I copypasted sample code into my app :
$data = [ 'name' => 'John Doe', 'email' => 'johndoe@example.com', 'address' => [ 'street' => '123 Main St', 'city' => 'Anytown', 'state' => 'CA', 'zip' => '12345' ]];Redis::hmset('user:1', $data); // Error is pointing to this 173 line
but I got error :
php artisan job:dispatchNow ArticlesCachingJobErrorExceptionArray to string conversionat vendor/predis/predis/src/Connection/StreamConnection.php:365361▕362▕ foreach ($arguments as $argument) {363▕ \Log::info( ' $argument::');364▕ \Log::info( $argument);➜ 365▕ $arglen = strlen(strval($argument));366▕ $buffer .= "${$arglen}\r\n{$argument}\r\n";367▕ }368▕369▕ $this->write($buffer);+8 vendor frames9 app/Library/Services/ArticlesRedisCaching.php:173Illuminate\Support\Facades\Facade::__callStatic()
I tried to debug code and added 2 logging lines into vendor/predis/predis/src/Connection/StreamConnection.php file:
public function writeRequest(CommandInterface $command) // line 352{$commandID = $command->getId();$arguments = $command->getArguments();$cmdlen = strlen($commandID);$reqlen = count($arguments) + 1;$buffer = "*{$reqlen}\r\n${$cmdlen}\r\n{$commandID}\r\n";foreach ($arguments as $argument) {\Log::info( ' $argument::');\Log::info( $argument);$arglen = strlen(strval($argument));$buffer .= "${$arglen}\r\n{$argument}\r\n";}$this->write($buffer);}2023-02-20 07:27:04] local.INFO: $argument::[2023-02-20 07:27:04] local.INFO: _votes_db_user:1[2023-02-20 07:27:04] local.INFO: $argument::[2023-02-20 07:27:04] local.INFO: name[2023-02-20 07:27:04] local.INFO: $argument::[2023-02-20 07:27:04] local.INFO: John Doe[2023-02-20 07:27:04] local.INFO: $argument::[2023-02-20 07:27:04] local.INFO: email[2023-02-20 07:27:04] local.INFO: $argument::[2023-02-20 07:27:04] local.INFO: johndoe@example.com[2023-02-20 07:27:04] local.INFO: $argument::[2023-02-20 07:27:04] local.INFO: address[2023-02-20 07:27:04] local.INFO: $argument::[2023-02-20 07:27:04] local.INFO: array ('street' => '123 Main St','city' => 'Anytown','state' => 'CA','zip' => '12345',)[2023-02-20 07:27:04] local.ERROR: Array to string conversion {"exception":"[object] (ErrorException(code: 0): Array to string conversion at /mnt/_work_sdb8/wwwroot/lar/MS/MS_Votes/vendor/predis/predis/src/Connection/StreamConnection.php:365)[stacktrace]#0 /mnt/_work_sdb8/wwwroot/lar/MS/MS_Votes/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(266): Illuminate\\Foundation\\Bootstrap\\HandleExceptions->handleError()#1 [internal function]: Illuminate\\Foundation\\Bootstrap\\HandleExceptions->Illuminate\\Foundation\\Bootstrap\\{closure}()#2 /mnt/_work_sdb8/wwwroot/lar/MS/MS_Votes/vendor/predis/predis/src/Connection/StreamConnection.php(365): strval()#3 /mnt/_work_sdb8/wwwroot/lar/MS/MS_Votes/vendor/predis/predis/src/Connection/AbstractConnection.php(110): Predis\\Connection\\StreamConnection->writeRequest()#4 /mnt/_work_sdb8/wwwroot/lar/MS/MS_Votes/vendor/predis/predis/src/Client.php(318): Predis\\Connection\\AbstractConnection->executeCommand()#5 /mnt/_work_sdb8/wwwroot/lar/MS/MS_Votes/vendor/predis/predis/src/Client.php(301): Predis\\Client->executeCommand()#6 /mnt/_work_sdb8/wwwroot/lar/MS/MS_Votes/vendor/laravel/framework/src/Illuminate/Redis/Connections/Connection.php(116): Predis\\Client->__call()#7 /mnt/_work_sdb8/wwwroot/lar/MS/MS_Votes/vendor/laravel/framework/src/Illuminate/Redis/Connections/Connection.php(216): Illuminate\\Redis\\Connections\\Connection->command()#8 /mnt/_work_sdb8/wwwroot/lar/MS/MS_Votes/vendor/laravel/framework/src/Illuminate/Redis/RedisManager.php(276): Illuminate\\Redis\\Connections\\Connection->__call()#9 /mnt/_work_sdb8/wwwroot/lar/MS/MS_Votes/vendor/laravel/framework/src/Illuminate/Support/Facades/Facade.php(338): Illuminate\\Redis\\RedisManager->__call()#10 /mnt/_work_sdb8/wwwroot/lar/MS/MS_Votes/app/Library/Services/ArticlesRedisCaching.php(173): Illuminate\\Support\\Facades\\Facade::__callStatic()
As you see strval can not work with array.
-
I wrapped 'address' array with serialize method - it worked ok and that is what I see in phpRedisAdmin : https://prnt.sc/BMnRev9HDwZz
-
Have I to wrap all subarray with serialize method ?
-
Searching in net I found some hints that HMSET is considered deprecated. I tried hset, but it raised the same Array to string conversion error
in both cases with serialize( or without it -
I have
Redis server v=5.0.7 sha=00000000:0 malloc=jemalloc-5.2.1 bits=64 build=66bd62
under kubuntu 20.04
UPDATED BLOCK 2:
I tried 2 ways :$data = [ 'name' => 'John Doe', 'email' => 'johndoe@example.com', 'address' => (object)[ 'street' => '123 Main St', 'city' => 'Anytown', 'state' => 'CA', 'zip' => '12345' ]];Redis::hset('user:1', $data);
and I got :
Array to string conversionat vendor/predis/predis/src/Connection/StreamConnection.php:365361▕362▕ foreach ($arguments as $argument) {363▕ //\Log::info( ' $argument::');364▕ //\Log::info( $argument);➜ 365▕ $arglen = strlen(strval($argument));366▕ $buffer .= "${$arglen}\r\n{$argument}\r\n";367▕ }368▕369▕ $this->write($buffer);+8 vendor frames9 app/Library/Services/ArticlesRedisCaching.php:176Illuminate\Support\Facades\Facade::__callStatic()10 app/Jobs/ArticlesCachingJob.php:52App\Library\Services\ArticlesRedisCaching::addArticleToCaching()
and second :
$data = [ 'name' => 'John Doe', 'email' => 'johndoe@example.com', 'address' => [ 'street' => '123 Main St', 'city' => 'Anytown', 'state' => 'CA', 'zip' => '12345' ]];Redis::hset('user:1', (object)$data);
and error again :
Object of class stdClass could not be converted to stringat vendor/predis/predis/src/Connection/StreamConnection.php:365361▕362▕ foreach ($arguments as $argument) {363▕ //\Log::info( ' $argument::');364▕ //\Log::info( $argument);➜ 365▕ $arglen = strlen(strval($argument));366▕ $buffer .= "${$arglen}\r\n{$argument}\r\n";367▕ }368▕369▕ $this->write($buffer);+8 vendor frames9 app/Library/Services/ArticlesRedisCaching.php:176Illuminate\Support\Facades\Facade::__callStatic()
looks like any value must be string(or serialized string) ?
Thank you!
答案1
得分: 1
以下是代码部分的翻译：
After some tests I found a valid way top save/read structured data with redis as :$articleArray = self::serializeArray($article->toArray());Redis::hmset($redisUniqueKey, $articleArray);...protected static function serializeArray(?array $data): array{foreach ($data as $fieldName => $fieldValue) {if (is_array($fieldValue)) {$data[$fieldName] = serialize($fieldValue);}}return $data;}and reading :$cachedArticle = self::unserializeArray(Redis::HGETALL($redisUniqueKey));...protected static function unserializeArray(?array $data): array{foreach ($data as $fieldName => $fieldValue) {if (isSerialized($fieldValue)) {$data[$fieldName] = unserialize($fieldValue);}}return $data;}That works for me with data I test.
英文:
After some tests I found a valid way top save/read structured data with redis as :
$articleArray = self::serializeArray($article->toArray());Redis::hmset($redisUniqueKey, $articleArray);...protected static function serializeArray(?array $data): array{foreach ($data as $fieldName => $fieldValue) {if (is_array($fieldValue)) {$data[$fieldName] = serialize($fieldValue);}}return $data;}
and reading :
$cachedArticle = self::unserializeArray(Redis::HGETALL($redisUniqueKey));...protected static function unserializeArray(?array $data): array{foreach ($data as $fieldName => $fieldValue) {if (isSerialized($fieldValue)) {$data[$fieldName] = unserialize($fieldValue);}}return $data;}
That works for me with data I test.
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