我试图制作搜索功能。 当用户选择产品时,应显示属于某个存储位置的产品列表。
到目前为止,我只能显示包含所有项目的数组产品。但是当我想更深入地遍历每个项目(搜索与所选项目匹配的项目)时,我收到了一个错误:
错误:没有为产品定义索引
这是我的代码:
controllers.js:
.controller('InventoryCtrl', function($scope, Category, Inventory) {
$scope.categories = Category;
$scope.searchInventory = function(category){
var word = category.Category;
//console.log(word);
var ref = new Firebase('https://vivid-heat-2430.firebaseio.com/');
var invenRef = ref.child('Inventories');
var prodRef = invenRef.child('Products');
invenRef.orderByChild("Products").on("child_added", function(snapshot) {
var data = snapshot.val();
var store = data.Inventory;
var prod = data.Products;
console.log(prod);
snapshot.forEach(function(childSnapshot) {
var test = childSnapshot.val();
console.log(test);
//var key = childSnapshot.key();
//console.log(key);
});
});
};
})
我已经定义了我的索引。但我仍然有这个错误。
我也在我的控制器中尝试过这样:
$scope.searchInventory = function(category){
var word = category.Category;
var ref = new Firebase('https://vivid-heat-2430.firebaseio.com/');
var invenRef = ref.child('Inventories');
var prodRef = invenRef.child('Products');
invenRef.orderByChild("Products").equalTo(word).on("child_added", function(snapshot){
console.log(snapshot.key());
});
};
})
我没有错误,但我无法记录任何内容。
这是我的firebase结构:
你能指出我做错了什么吗?我还是新手,并试图从错误中吸取教训。
提前致谢!
修改
我的规则.json
{
"rules": {
".read": true,
".write": true,
"Inventories": {
".indexOn": "Products"
}
}
}
db结构的JSON文件:
{
"Categorie" : {
"-K5a3iGlgi7PS0m3O4y8" : {
"Category" : "IQ 33cl BOX",
"Optional" : false,
"Size" : "24"
},
"-K5a3vNZRc2Cur9964Xs" : {
"Category" : "CL 33cl BOX",
"Optional" : true,
"Size" : "24"
},
"-K5a40Q79SCqWqMbqWQu" : {
"Category" : "IQ 33cl CASE",
"Optional" : true,
"Size" : "24"
},
"-K5a464FON4qdnqE9rgf" : {
"Category" : "CL 33cl CASE",
"Optional" : false,
"Size" : "24"
},
"-K5a4TAzHE8cRGPbNeij" : {
"Category" : "Empty CASES",
"Optional" : false,
"Size" : "24"
}
},
"Inventories" : {
"17-12-2015Storage 1" : {
"Date" : 1450366396979,
"Inventory" : "Storage 1",
"Products" : {
"CL 33cl BOX" : {
"boxes" : 0,
"full" : 11,
"half" : 13
},
"IQ 33cl BOX" : {
"boxes" : 0,
"full" : 60,
"half" : 0
}
}
},
"17-12-2015Storage Deb" : {
"Date" : 1450367128198,
"Inventory" : "Storage Deb",
"Products" : {
"IQ 33cl CASE" : {
"boxes" : 0,
"full" : 2,
"half" : 14
}
}
}
},
"Storages" : {
"-K5a4esu-1Na1hkKMP47" : { "name" : "Storage 1" },
"-K5a4ihb9L5z6qSqQxAx" : { "name" : "Storage Deb" },
"-K5a4l9odWuPUJJuN8OR" : { "name" : "Storage Bart" },
"-K5a4nsc47N3k_hMVl2h" : { "name" : "Storage Debosz" }
}
}
的index.html
<div style="max-height: 300px" ng-controller="InventoryCtrl">
<ion-list>
<ion-radio ng-repeat="category in categories" class="item-accordion" ng-model="checked.check" value="{{category.Category}}" ng-click="searchInventory(category)">
<p>{{category.Category}}</p>
</ion-radio>
<br>
</ion-list>
</div>
答案 0 :(得分:1)
您的结构(根据链接)
Inventories
some_node_name_1
Inventory: xxxx
Products:
product_name: "product a"
product_price: 30
some_node_name_2
Inventory: xxxx
Products:
product_name: "product b"
product_price: 50
和您的查询路径
var ref = new Firebase('https://vivid-heat-2430.firebaseio.com/');
var invenRef = ref.child('Inventories');
var prodRef = invenRef.child('Products');
(注意prodRef似乎没有使用)
那怎么样:
var ref = new Firebase('https://vivid-heat-2430.firebaseio.com/Inventories');
ref.orderByChild("Products/product_name").on("child_added", function(snapshot) {
});
.indexOn规则应该与您进行查询的位置(product_name)处于同一级别。
使用更多信息进行修改:
节点密钥会自动编入索引,因此您不需要为节点产品添加.index(它已经完成)。但是,您可以为Products的子项添加索引,例如:
{
"rules": {
"Inventories": {
"Products": {
".indexOn": ["product_name"]
}
}
}
}
或(我相信这是另一种选择)
{
"rules": {
"Inventories": {
".indexOn": ["Products/product_name"]
}
}
}
答案 1 :(得分:0)
我通过使用Object.keys()来获取产品的名称,从而解决了这个问题。
我还使用for循环来搜索匹配的产品。
我的控制器现在看起来像这样:
.controller('InventoryCtrl', function($scope, $firebaseObject, Category, Inventory) {
$scope.categories = Category;
$scope.searchInventory = function(category){
var word = category.Category;
var ref = new Firebase('https://vivid-heat-2430.firebaseio.com/');
var invenRef = ref.child('Inventories');
var prodRef = invenRef.child('Products');
var test22 = [];
invenRef.orderByChild("Products").on("child_added", function(snapshot) {
var data = snapshot.val();
var store = data.Inventory;
var test = Object.keys(prod);
for( var i = 0; i < test.length; i++){
if (test[i] == word) {
test22.push(data.Inventory);
};
};
$scope.show = test22;
});
};
})