grails - 在 View 定义中生成的实例

Question

grails 中的 generate-all 将与 View (CRUD) 一起生成一个 Controller ，我正在尝试了解每个生成的代码块的影响，现在我似乎无法在 index.gsp 中找到 {accountInstanceList} 的定义。

/views/account/index.gsp

        <g:each in="${accountInstanceList}" status="i" var="accountInstance">
            <tr class="${(i % 2) == 0 ? 'even' : 'odd'}">

                <td><g:link action="show" id="${accountInstance.id}">${fieldValue(bean: accountInstance, field: "firstname")}</g:link></td>

                <td>${fieldValue(bean: accountInstance, field: "middlename")}</td>

                <td>${fieldValue(bean: accountInstance, field: "lastname")}</td>

                <td>${fieldValue(bean: accountInstance, field: "email")}</td>

                <td>${fieldValue(bean: accountInstance, field: "role")}</td>

            </tr>
        </g:each>

据我所知，上述实例的定义应包含在 Controller 中

/controller/.../AccountController.groovy

package ers

import static org.springframework.http.HttpStatus.*
import grails.transaction.Transactional

@Transactional(readOnly = true)
class AccountController {

    static allowedMethods = [save: "POST", update: "PUT", delete: "DELETE"]

    def index(Integer max) {
        params.max = Math.min(max ?: 10, 100)
        respond Account.list(params), model:[accountInstanceCount: Account.count()]
    }

    def show(Account accountInstance) {
        respond accountInstance
    }

    def create() {
        respond new Account(params)
    }

    @Transactional
    def save(Account accountInstance) {
        if (accountInstance == null) {
            notFound()
            return
        }

        if (accountInstance.hasErrors()) {
            respond accountInstance.errors, view:'create'
            return
        }

        accountInstance.save flush:true

        request.withFormat {
            form multipartForm {
                flash.message = message(code: 'default.created.message', args: [message(code: 'account.label', default: 'Account'), accountInstance.id])
                redirect accountInstance
            }
            '*' { respond accountInstance, [status: CREATED] }
        }
    }

    def edit(Account accountInstance) {
        respond accountInstance
    }

    @Transactional
    def update(Account accountInstance) {
        if (accountInstance == null) {
            notFound()
            return
        }

        if (accountInstance.hasErrors()) {
            respond accountInstance.errors, view:'edit'
            return
        }

        accountInstance.save flush:true

        request.withFormat {
            form multipartForm {
                flash.message = message(code: 'default.updated.message', args: [message(code: 'Account.label', default: 'Account'), accountInstance.id])
                redirect accountInstance
            }
            '*'{ respond accountInstance, [status: OK] }
        }
    }

    @Transactional
    def delete(Account accountInstance) {

        if (accountInstance == null) {
            notFound()
            return
        }

        accountInstance.delete flush:true

        request.withFormat {
            form multipartForm {
                flash.message = message(code: 'default.deleted.message', args: [message(code: 'Account.label', default: 'Account'), accountInstance.id])
                redirect action:"index", method:"GET"
            }
            '*'{ render status: NO_CONTENT }
        }
    }

    protected void notFound() {
        request.withFormat {
            form multipartForm {
                flash.message = message(code: 'default.not.found.message', args: [message(code: 'account.label', default: 'Account'), params.id])
                redirect action: "index", method: "GET"
            }
            '*'{ render status: NOT_FOUND }
        }
    }
}

{accountInstanceList} 不在 Controller 的 index Action 中，它在哪里定义？是否也生成了隐藏类？

Answer 1

render 方法确定你试图传递给 View 的“事物”的类型并创建一个合适的名称，如果是域对象列表，它是 DomainNameInstanceList，请参见类 DefaultHtmlRenderer
另见 scaffollding文档部分

...the standard scaffold views expect model variables of the form
<propertyName>InstanceList for collections and <propertyName>Instance
for single instances