Firebase Ionic Nested Search - angularjs

Question

I'm trying to make a search function.
When a user selects a product, a list of products should be shown belonging to some storage place.
For so far, I can only show the array Products with all the items in it. But when I want to go deeper and loop over each items (to search items that match with the selected item), I got an error:
Error: No index defined for Products
This is my code:
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);
});
});
};
})
I’ve already defined my index. But I still got this error.
I also tried it like this in my controller:
$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());
});
};
})
Here I got no errors, But I can't log anything to see.
This is my firebase structure:
Database structure
Can you please point out what I did wrong? I'm still new to this and trying to learn from my mistakes.
Thanks in advance!
EDIT
My rules.json
{
"rules": {
".read": true,
".write": true,
"Inventories": {
".indexOn": "Products"
}
}
}
JSON file of db structure:
{
"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" }
}
}
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>

Answer 1

Your structure (according to the link)
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
and your query path
var ref = new Firebase('https://vivid-heat-2430.firebaseio.com/');
var invenRef = ref.child('Inventories');
var prodRef = invenRef.child('Products');
(note prodRef doesn't appear to be used)
So how about:
var ref = new Firebase('https://vivid-heat-2430.firebaseio.com/Inventories');
ref.orderByChild("Products/product_name").on("child_added", function(snapshot) {
});
And the .indexOn rule should be at the same level as where you do the query (product_name).
Edit with more info:
A nodes key is indexed automatically so you don't need to add .index for the node Products (it's already done). However, you would add a index for a child of Products for example:
{
"rules": {
"Inventories": {
"Products": {
".indexOn": ["product_name"]
}
}
}
}
or (I believe this is another option)
{
"rules": {
"Inventories": {
".indexOn": ["Products/product_name"]
}
}
}

Answer 2

I've solved the problem by using Object.keys() to get the name of the products.
I also used a for loop to search for the matching product.
My controller looks like this now:
.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;
});
};
})