我是 Groovy & Grails 的新手。我正在研究 Grails 中的示例一对多关系之一。
下面是代码。
class User {
//properties
String login
String password
String role
//constraints and order of display of fields in UI
static constraints = {
login(blank: false, nullable: false, unique: true)
password(blank: false, nullable: false, password: true)
role(inList:["Admin", "Member"])
}
static hasMany = [posts : Post]
}
class Post {
String content
Date dateCreated
static constraints = {
content(blank: true)
}
static belongsTo = [user : User]
}
我在 Groovy 中的测试类
@TestFor(User)
class UserTests {
void testUserToPost() {
def user = new User(login: "joe", password: "joe", role:"Admin")
user.addToPosts(new Post(content: "First"));
user.addToPosts(new Post(content: "Second"));
user.addToPosts(new Post(content: "Third"));
user.save(flush: true)
assertEquals 3, User.get(user.id).posts.size()
}
}
运行测试类时,出现以下异常:
groovy.lang.MissingMethodException: No signature of method: com.library.forum.User.addToPosts() is applicable for argument types: (com.library.forum.Post) values: [com.library.forum.Post : (unsaved)]
Possible solutions: getPosts() at com.library.forum.UserTests.testUserToPost(UserTests.groovy:17)
谁能告诉我代码中的问题在哪里。