Question

我有一个域类Project，如下所示

class Project {
    String projectName
    String projectCode
    String techLead
    String projectManager
    Date deliveryDate
    String currentPhase
    Integer priority

}

我有控制器如下

class ProjectController {
def scaffold = Project

def index = {
redirect(action:list,params:params)
}

def list = {
// displays only 10 records per page
if (!params.max) params.max = 10
[ projectList: Project.list( params ) ]
}
}

我想在排序顺序或优先级中显示项目列表。我该如何实现呢？

Answer 1

将您的list操作更改为以下

def list = {
  // displays only 10 records per page
  if (!params.max) {
    params.max = 10
  }
  params.sort = "priority" 
  params.order = "asc"  // change to "desc" to sort in the opposite direction

  [projectList: Project.list(params)]      
}

Answer 2

更短且更惯用的方法是使用提供排序的list上的动态方法：

def list = {
    [projectList: Project.listOrderByPriority(max: params.max ?: 10)]
}

Grails CRUD按字段排序

2 个答案: