Extjs4 如何在没有ajax请求的情况下扩展树节点？

我使用的是Extjs树，我在单击嵌套节点ajax请求服务器时遇到问题，我知道这种延迟负载，但我的树不大，大约35个项目，所以我希望请求服务器的时间只收集所有树节点和项目。 有什么想法吗

视图：

})

商店：

Ext.define('CRM.store.RoleList', {
extend: 'Ext.data.TreeStore',
storeId: 'RoleTreeStoreId',
//model: 'CRM.model.RoleList',
autoLoad: false,
proxy: {
            type  : 'ajax',
            url   : 'index.php/role/getRoleList',
            async : false,
            reader: {
                type   : 'json',
                method : 'POST'
            }
},
root:{
    expanded:true,
    text:"Organization",
    leaf:'false',
     id       : '/',
}

})

Json返回：

{
"text": "Organization",
"id": "role-1",
"children": [
    {
        "text": "Admin",
        "id": "role-12",
        "expanded": "true",
        "children": [
            {
                "text": "MSD",
                "id": "role-23",
                "children": [
                    {
                        "text": "Customer Care Manager",
                        "id": "role-4",
                        "children": [
                            {
                                "text": "Customer Care Adviser",
                                "id": "role-5"
                            }
                        ]
                    },
                    {
                        "text": "Solution Adviser",
                        "id": "role-7"
                    },
                    {
                        "text": "Sales Manager",
                        "id": "role-31",
                        "children": [
                            {
                                "text": "Solution Sales",
                                "id": "role-6"
                            },
                            {
                                "text": "Teritory 01 - Safy",
                                "id": "role-9",
                                "children": [
                                    {
                                        "text": "Sales Person 01",
                                        "id": "role-10"
                                    },
                                    {
                                        "text": "Sales Trainee 01",
                                        "id": "role-26"
                                    }
                                ]
                            },
                            {
                                "text": "Teritory 3 - Sambo",
                                "id": "role-11",
                                "children": [
                                    {
                                        "text": "Sales Person 3",
                                        "id": "role-13"
                                    }
                                ]
                            },
                            {
                                "text": "Teritory 4 - Narong",
                                "id": "role-14",
                                "children": [
                                    {
                                        "text": "Sales Team 4",
                                        "id": "role-15",
                                        "children": [
                                            {
                                                "text": "Sales Person 4",
                                                "id": "role-25"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "text": "branch shv",
                                "id": "role-16",
                                "children": [
                                    {
                                        "text": "sales shv",
                                        "id": "role-19"
                                    }
                                ]
                            },
                            {
                                "text": "branch btb",
                                "id": "role-17",
                                "children": [
                                    {
                                        "text": "sales btb",
                                        "id": "role-20"
                                    }
                                ]
                            },
                            {
                                "text": "branch srp",
                                "id": "role-18",
                                "children": [
                                    {
                                        "text": "sales srp",
                                        "id": "role-21",
                                        "children": [
                                            {
                                                "text": "sales person srp",
                                                "id": "role-28"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "text": "Retention Program",
                                "id": "role-22",
                                "children": [
                                    {
                                        "text": "Retention Program Analysist",
                                        "id": "role-24"
                                    }
                                ]
                            },
                            {
                                "text": "Sales Trainee",
                                "id": "role-27"
                            },
                            {
                                "text": "Enterprise Sales Engineer",
                                "id": "role-29"
                            },
                            {
                                "text": "Meas Test",
                                "id": "role-30"
                            },
                            {
                                "text": "Teritory 02 - Kol",
                                "id": "role-32",
                                "children": [
                                    {
                                        "text": "Sales Person 02",
                                        "id": "role-8"
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            {
                "text": "CTO",
                "id": "role-35",
                "children": [
                    {
                        "text": "Support Manager",
                        "id": "role-2",
                        "children": [
                            {
                                "text": "Technical Support Adviser",
                                "id": "role-3"
                            }
                        ]
                    },
                    {
                        "text": "IT BIlling Product Manager",
                        "id": "role-33",
                        "children": [
                            {
                                "text": "IT Staff",
                                "id": "role-34"
                            }
                        ]
                    }
                ]
            },
            {
                "text": "Business Consultant",
                "id": "role-36"
            }
        ]
    }
]

---

}您仍然可以使用异步调用，但只能使用一次。要确保只进行一次呼叫，请返回第一次呼叫中的所有子级。Extjs将加载提供的所有子项

我发现了JSON的错误，我应该根据是否有子项添加属性“leaf=true/false”。

显示您的请求响应。我已编辑提供代码样本，如果您对提供的答案满意，请将问题标记为已回答

{
"text": "Organization",
"id": "role-1",
"children": [
    {
        "text": "Admin",
        "id": "role-12",
        "expanded": "true",
        "children": [
            {
                "text": "MSD",
                "id": "role-23",
                "children": [
                    {
                        "text": "Customer Care Manager",
                        "id": "role-4",
                        "children": [
                            {
                                "text": "Customer Care Adviser",
                                "id": "role-5"
                            }
                        ]
                    },
                    {
                        "text": "Solution Adviser",
                        "id": "role-7"
                    },
                    {
                        "text": "Sales Manager",
                        "id": "role-31",
                        "children": [
                            {
                                "text": "Solution Sales",
                                "id": "role-6"
                            },
                            {
                                "text": "Teritory 01 - Safy",
                                "id": "role-9",
                                "children": [
                                    {
                                        "text": "Sales Person 01",
                                        "id": "role-10"
                                    },
                                    {
                                        "text": "Sales Trainee 01",
                                        "id": "role-26"
                                    }
                                ]
                            },
                            {
                                "text": "Teritory 3 - Sambo",
                                "id": "role-11",
                                "children": [
                                    {
                                        "text": "Sales Person 3",
                                        "id": "role-13"
                                    }
                                ]
                            },
                            {
                                "text": "Teritory 4 - Narong",
                                "id": "role-14",
                                "children": [
                                    {
                                        "text": "Sales Team 4",
                                        "id": "role-15",
                                        "children": [
                                            {
                                                "text": "Sales Person 4",
                                                "id": "role-25"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "text": "branch shv",
                                "id": "role-16",
                                "children": [
                                    {
                                        "text": "sales shv",
                                        "id": "role-19"
                                    }
                                ]
                            },
                            {
                                "text": "branch btb",
                                "id": "role-17",
                                "children": [
                                    {
                                        "text": "sales btb",
                                        "id": "role-20"
                                    }
                                ]
                            },
                            {
                                "text": "branch srp",
                                "id": "role-18",
                                "children": [
                                    {
                                        "text": "sales srp",
                                        "id": "role-21",
                                        "children": [
                                            {
                                                "text": "sales person srp",
                                                "id": "role-28"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "text": "Retention Program",
                                "id": "role-22",
                                "children": [
                                    {
                                        "text": "Retention Program Analysist",
                                        "id": "role-24"
                                    }
                                ]
                            },
                            {
                                "text": "Sales Trainee",
                                "id": "role-27"
                            },
                            {
                                "text": "Enterprise Sales Engineer",
                                "id": "role-29"
                            },
                            {
                                "text": "Meas Test",
                                "id": "role-30"
                            },
                            {
                                "text": "Teritory 02 - Kol",
                                "id": "role-32",
                                "children": [
                                    {
                                        "text": "Sales Person 02",
                                        "id": "role-8"
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            {
                "text": "CTO",
                "id": "role-35",
                "children": [
                    {
                        "text": "Support Manager",
                        "id": "role-2",
                        "children": [
                            {
                                "text": "Technical Support Adviser",
                                "id": "role-3"
                            }
                        ]
                    },
                    {
                        "text": "IT BIlling Product Manager",
                        "id": "role-33",
                        "children": [
                            {
                                "text": "IT Staff",
                                "id": "role-34"
                            }
                        ]
                    }
                ]
            },
            {
                "text": "Business Consultant",
                "id": "role-36"
            }
        ]
    }
]