如何解决Grails删除方法
Grails删除方法似乎无效。 我想知道是否有什么问题。 我自己解决不了。 如果您能帮助我，我会很高兴。 我是日语不佳的日语。如果我用英语输入错误，对不起。 X（
我提到了教程站点。 https://koji-k.github.io/grails-tutorial/tutorials/todo-application/delete.html
您想做的事 我想使用delete方法删除具有指定ID的元素。
当前状态 可以保存，但不能删除。
开发环境 MacOS Mojave 智能 Grails版本：4.0.1 JVM版本：11.0.2
域
package hoge
class Hoge {
String name
String text
static constraints = {
}
}
控制器
package hoge
class HogeController {
def index() {
render(view: '/hoge/index',model: [hoges: Hoge.listOrderById()])
}
def save() {
String text = params.text
String name = params.name
Hoge newHoge = new Hoge(name: name,text: text)
// DB save
if (newHoge.validate()) {
newHoge.save()
redirect(controller: "hoge",action: "index")
} else {
render(view: '/hoge/index',model: [errorHoge: newHoge,hoges: Hoge.listOrderById()])
}
}
def delete() {
Hoge hoge = Hoge.get(params.long("id"))
if (hoge) {
hoge.delete()
flash.message = "deleted"
} else {
flash.error = "TodoId:${params.long("id")} is not found"
}
redirect(controller: "hoge",action: "index")
}
}
查看
<!DOCTYPE html>
<html>
<head>
<meta charaset="UTF-8">
<title>create page</title>
</head>
<body>
<g:if test="${flash.message}">
<div style="background-color: #269abc">${flash.message}</div>
</g:if>
<g:if test="${flash.error}">
<div style="background-color: #db7093">${flash.error}</div>
</g:if>
<g:renderErrors bean="${errorHoge}" as="list" field="hogeName"/>
<p>Name and Text</p>
<g:form controller="hoge" action="save">
<g:textField name="name" placeholder="name"/>
<g:textField name="text" placeholder="text"/>
<g:submitButton name="Add">Add Todo</g:submitButton>
</g:form>
<ul>
<g:each in="${hoges}" var="hoge">
<li>${hoge.id} ${hoge.name} ${hoge.text}</li>
<g:link controller="hoge" action="delete" params="['id':hoge.id]">
Delete
</g:link>
<g:link controller="hoge" action="update" params="['id':hoge.id]">
kousin
</g:link>
</g:each>
</ul>
</body>
build.gradle
buildscript {
repositories {
maven { url "https://repo.grails.org/grails/core" }
}
dependencies {
classpath "org.grails:grails-gradle-plugin:$grailsVersion"
classpath "org.grails.plugins:hibernate5:7.0.0"
classpath "gradle.plugin.com.github.erdi.webdriver-binaries:webdriver-binaries-gradle-plugin:2.0"
classpath "com.bertramlabs.plugins:asset-pipeline-gradle:3.0.10"
}
}
version "0.1"
group "hoge"
apply plugin:"eclipse"
apply plugin:"idea"
apply plugin:"war"
apply plugin:"org.grails.grails-web"
apply plugin:"com.github.erdi.webdriver-binaries"
apply plugin:"org.grails.grails-gsp"
apply plugin:"com.bertramlabs.asset-pipeline"
repositories {
maven { url "https://repo.grails.org/grails/core" }
}
configurations {
developmentOnly
runtimeClasspath {
extendsFrom developmentOnly
}
}
dependencies {
developmentOnly("org.springframework.boot:spring-boot-devtools")
compile "org.springframework.boot:spring-boot-starter-logging"
compile "org.springframework.boot:spring-boot-autoconfigure"
compile "org.grails:grails-core"
compile "org.springframework.boot:spring-boot-starter-actuator"
compile "org.springframework.boot:spring-boot-starter-tomcat"
compile "org.grails:grails-web-boot"
compile "org.grails:grails-logging"
compile "org.grails:grails-plugin-rest"
compile "org.grails:grails-plugin-databinding"
compile "org.grails:grails-plugin-i18n"
compile "org.grails:grails-plugin-services"
compile "org.grails:grails-plugin-url-mappings"
compile "org.grails:grails-plugin-interceptors"
compile "org.grails.plugins:cache"
compile "org.grails.plugins:async"
compile "org.grails.plugins:scaffolding"
compile "org.grails.plugins:events"
compile "org.grails.plugins:hibernate5"
compile "org.hibernate:hibernate-core:5.4.0.Final"
compile "org.grails.plugins:gsp"
compileOnly "io.micronaut:micronaut-inject-groovy"
console "org.grails:grails-console"
profile "org.grails.profiles:web"
runtime "org.glassfish.web:el-impl:2.1.2-b03"
runtime "com.h2database:h2"
runtime "org.apache.tomcat:tomcat-jdbc"
runtime "javax.xml.bind:jaxb-api:2.3.0"
runtime "com.bertramlabs.plugins:asset-pipeline-grails:3.0.10"
testCompile "org.grails:grails-gorm-testing-support"
testCompile "org.mockito:mockito-core"
testCompile "org.grails:grails-web-testing-support"
testCompile "org.grails.plugins:geb"
testCompile "org.seleniumhq.selenium:selenium-remote-driver:3.14.0"
testCompile "org.seleniumhq.selenium:selenium-api:3.14.0"
testCompile "org.seleniumhq.selenium:selenium-support:3.14.0"
testRuntime "org.seleniumhq.selenium:selenium-chrome-driver:3.14.0"
testRuntime "org.seleniumhq.selenium:selenium-firefox-driver:3.14.0"
}
bootRun {
jvmArgs(
'-Dspring.output.ansi.enabled=always','-noverify','-XX:TieredStopAtLevel=1','-Xmx1024m')
sourceResources sourceSets.main
String springProfilesActive = 'spring.profiles.active'
systemProperty springProfilesActive,System.getProperty(springProfilesActive)
}
webdriverBinaries {
chromedriver '2.45.0'
geckodriver '0.24.0'
}
tasks.withType(Test) {
systemProperty "geb.env",System.getProperty('geb.env')
systemProperty "geb.build.reportsDir",reporting.file("geb/integrationTest")
systemProperty "webdriver.chrome.driver",System.getProperty('webdriver.chrome.driver')
systemProperty "webdriver.gecko.driver",System.getProperty('webdriver.gecko.driver')
}
assets {
minifyJs = true
minifyCss = true
}
It remains even if I try to delete it
如果是todo.delete（刷新：true）
Error 500: Internal Server Error
URI: /hoge/delete/2
Class: javax.persistence.TransactionRequiredException
Message: null
Caused by: no transaction is in progress
版权声明：本文内容由互联网用户自发贡献，该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容， 请发送邮件至 dio@foxmail.com 举报，一经查实，本站将立刻删除。