英文:
Symfony 5.4 error: Object of class App\Entity\Routes could not be converted to string
问题
Here's the translated code portion:
namespace App\Form;
use App\Entity\Booking;
use App\Entity\User;
use App\Entity\Routes;
use Symfony\Bridge\Doctrine\Form\Type\EntityType;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
class BookingType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options): void
{
$builder
->add('date')
->add('time')
->add('user', EntityType::class, [
'class' => User::class,
'choice_label' => 'username', // Replace 'username' with the actual property of User to be displayed
])
->add('routes', EntityType::class, [
'class' => Routes::class,
'choice_label' => 'name', // Replace 'name' with the actual property of Routes to be displayed
]);
// Deliberate error: Typo in method name
$builder
->addr('missingMethod'); // This line has a typo in the method name 'addr' instead of 'add'
}
public function configureOptions(OptionsResolver $resolver): void
{
$resolver->setDefaults([
'data_class' => Booking::class,
]);
}
}
Regarding the error you mentioned, it seems to be related to the EntityType fields for "user" and "routes." Make sure that the properties you are trying to display as choices in these fields ("username" and "name") exist and are defined correctly in your User and Routes entities. If there are any issues with these properties or their getters, it can lead to the "could not be converted to string" error when rendering the form. Double-check your entity classes for any issues with these properties.
英文:
namespace App\Form;
use App\Entity\Booking;
use App\Entity\User;
use App\Entity\Routes;
use Symfony\Bridge\Doctrine\Form\Type\EntityType;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
class BookingType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options): void
{
$builder
->add('date')
->add('time')
->add('user', EntityType::class, [
'class' => User::class,
'choice_label' => 'username', // Replace 'username' with the actual property of User to be displayed
])
->add('routes', EntityType::class, [
'class' => Routes::class,
'choice_label' => 'name', // Replace 'name' with the actual property of Routes to be displayed
])
;
// Deliberate error: Typo in method name
$builder
->addr('missingMethod'); // This line has a typo in the method name 'addr' instead of 'add'
}
public function configureOptions(OptionsResolver $resolver): void
{
$resolver->setDefaults([
'data_class' => Booking::class,
]);
}
}
I made a CRUD controller using make:crud but when I try to add a new row in my SQL database I get this error: Object of class App\Entity\Routes could not be converted to string
Where is the error and how do I fix it?
答案1
得分: 1
Symfony正在尝试将您的实体转换为一个用于在表单中显示的字符串"summarizes"。您应该在出现错误的实体类中添加一个__toString()方法，该方法返回一个字符串。它可以类似这样（根据您的属性和需求进行代码适应）：
public function __toString()
{
$id = $this->getId();
$name = $this->getName();
return "$id | $name";
}
这将允许Symfony显示您的实体的"summary"，供需要该数据的字段类型使用，例如下拉框。希望这有所帮助。
英文:
Symfony is trying to convert your entity into a string that "summarizes" it for display in forms.
You should be adding a __toString() method that returns a string in the class of the entity the error appears on. It could look like that (adapt code to your properties and needs) :
public function __toString()
{
$id = $this->getId();
$name = $this->getName();
return "$id | $name";
}
It will allow Symfony to display the "summary" of your entity the types of fields that require that data, for example in dropdowns. Hope this helps.
答案2
得分: 0
Sure, here's the translated code snippet:
$builder->addr() 方法名无效。执行代码时将导致致命错误。以下是正确的代码：
<?php
namespace App\Form;
use App\Entity\Booking;
use App\Entity\User;
use App\Entity\Routes;
use Symfony\Bridge\Doctrine\Form\Type\EntityType;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
class BookingType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options): void
{
$builder
->add('date')
->add('time')
->add('user', EntityType::class, [
'class' => User::class,
'choice_label' => 'username', // 用 User 实体的实际属性替换 'username'
])
->add('routes', EntityType::class, [
'class' => Routes::class,
'choice_label' => 'name', // 用 Routes 实体的实际属性替换 'name'
])
;
}
public function configureOptions(OptionsResolver $resolver): void
{
$resolver->setDefaults([
'data_class' => Booking::class,
]);
}
}
I hope this helps! If you have any more code to translate or any other questions, feel free to ask.
英文:
$builder->addr(), which is an invalid method name. Will cause a fatal error when executing the code. This is the right code:
<?php
namespace App\Form;
use App\Entity\Booking;
use App\Entity\User;
use App\Entity\Routes;
use Symfony\Bridge\Doctrine\Form\Type\EntityType;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
class BookingType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options): void
{
$builder
->add('date')
->add('time')
->add('user', EntityType::class, [
'class' => User::class,
'choice_label' => 'username', // Replace 'username' with the actual property of User to be displayed
])
->add('routes', EntityType::class, [
'class' => Routes::class,
'choice_label' => 'name', // Replace 'name' with the actual property of Routes to be displayed
])
;
}
public function configureOptions(OptionsResolver $resolver): void
{
$resolver->setDefaults([
'data_class' => Booking::class,
]);
}
}
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