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比方說,我在解析兩個類(表):Parse.com無法輸出合適的JSON
--- TABLE 1: Navigation -------------------
objectId
Name
Url
-------------------------------------------
--- TABLE 2: Items ------------------------
objectId
Navigation (pointer to Navigation class)
Name
Price
-------------------------------------------
所有我想要的是像下面的一些JSON輸出:
[
{
name: "Home",
url: "home"
},
{
name: "Menu",
url: "menu",
items: [{
name: "French Fries",
price: 3.00
},
{
name: "Hamburger",
price: 4.00
},
{
name: "Cheeseburger",
price: 5.00
}]
},
{
name: "Dinner Menu",
url: "dinner-menu",
items: [{
name: "Beer",
price: 3.00
},
{
name: "Wine (glass)",
price: 9.00
},
{
name: "Liquor Premium",
price: 8.00
}]
},
{
name: "Like and Follow Us",
url: "social-media"
}
]
我已經嘗試了我所有的功能來通過嵌套查詢來進行查詢,以循環使用items
。我曾嘗試查看Parse.Promises的文檔,我認爲這是問題的一部分,並且無法使結果像上面那樣顯示。幫幫我!!!
我斷碼:
var mainNav = [];
var navigationQuery = new Parse.Query(Parse.Object.extend("Navigation"));
navigationQuery.ascending("SortOrder").find().then(function(navItems) {
_.each(navItems, function(navItem) {
var newObj = {};
newObj.Name = navItem.get("Name");
newObj.Url = navItem.get("Url");
newObj.Module = navItem.get("Module");
newObj.SortOrder = navItem.get("SortOrder");
var itemQuery = new Parse.Query(Parse.Object.extend("ListItems")).equalTo('Navigation', navItem).ascending('SortOrder').find(function(items) {
newObj.Source = items; // not getting added to object!
});
mainNav.push(newObj);
});
}).then(function(items) {
res.send(mainNav);
});
首先,謝謝你回覆我。你似乎是最有知識的解析人。我很難讓Promises工作。你認爲你可以幫助我以正確的方式寫出代碼嗎?我只需要上面的JSON輸出。我是否以正確的方式去做?我有正確的數據庫架構設置嗎?我不習慣運行異步事件,我似乎無法讓Promises合作並讓我得到我想要的東西。 – boxmatic 2014-09-04 03:38:00