小编mby*_*you的帖子

我的 symfony 应用程序有这个实体：

<?php\n\nnamespace App\\Entity;\n\nclass Lead\n{\n    private ?string $zipCode;\n    private ?string $city;\n\n    public function getZipCode(): ?string\n    {\n        return $this->zipCode;\n    }\n\n    public function setZipCode(string $zipCode): self\n    {\n        $this->zipCode = $zipCode;\n\n        return $this;\n    }\n\n    public function getCity(): ?string\n    {\n        return $this->city;\n    }\n\n    public function setCity(string $city): self\n    {\n        $this->city = $city;\n\n        return $this;\n    }\n}\n

表单LeadType为：

$builder->add(\'zipCode\', TextType::class, [\n        \'attr\' => [\n            \'placeholder\' => \'Ex : 44000\',\n            \'onchange\' => \'cityChoices(this.value)\',\n        ]\n    ])\n    ->add(\'city\', ChoiceType::class, [\n        \'choices\' …