Json array iteration in futon - couchdb

Question

I am using CocuhDB I have this document structure
{"master": false,
"type": "a",
"company": 9,
"products": [
{
"unit": {
"id": 9,
"isMp": false,
"_id": "40109daadce8d3671a1aeca35bbb1438"
},
"article": {
"id": 1132,
"id_provider": 0,
"isMp": false,
"id_unit": 9,
"weight": 0,
"_id": "eb1718f96375b01af5552cf3f4c2d86b",
"code": "ME021",
"type_article": 2
},
"order": 1,
"warehouse_company": {
"id": 9,
"_id": "ebce7557ff95203ac5d03f294381d6ed"
},
"article_code": "ME021",
"provider": {
"id": 2313,
"isMp": false
},
"qty": 20.5,
"warehouse": {
"id": 18,
"isMp": false
}
}, {
"unit": {
"id": 9,
"isMp": false,
"_id": "40109daadce8d3671a1aeca35bbb1438"
},
"article": {
"id": 1132,
"id_provider": 0,
"isMp": false,
"id_unit": 9,
"weight": 0,
"_id": "eb1718f96375b01af5552cf3f4c2d86b",
"code": "ME099",
"type_article": 2
},
"order": 1,
"warehouse_company": {
"id": 9,
"isMp": false
},
"article_code": "ME021",
"provider": {
"id": 2313,
"isMp": false,
"_id": "657abbdfb4c713a9baa1ffd7329319c0"
},
"qty": 20.5,
"warehouse": {
"id": 18,
"isMp": false,
"_id": "9f70abb04a0243a1cd997b6430fb2207"
}
}
]
}
products field coulb be one or ten.
I need to find all the documents where
doc.products[n].warehouse.id == 18
But I dont know how to do it using Futon.
I am trying something like :
function(doc) {
var product, value;
if (doc.type != master && doc.type == "a" && doc.company == 9) {
for (product in doc.products) {
value= doc.prices[producto];
emit(value, doc );
}
}
}
But It does not work .
What I am doing wrong?

Answer 1

You can use view like this. This is an example. Not a solution
function(doc) {
var product, value;
if (doc.type != "master" && doc.type == "a" && doc.company == 9 && doc.products && Array.isArray(doc.products)) {
doc.products.forEach(function(product) {
Object.keys(product).forEach(function(key) {
emit([key, product[key].id]);
});
});
}
}
Will create output like
{
"total_rows": 16,
"offset": 0,
"rows": [
{
"key": [
"article",
1132
],
"id": "check",
"value": null
},
{
"key": [
"article",
1132
],
"id": "check",
"value": null
},
{
"key": [
"article_code",
null
],
"id": "check",
"value": null
},
{
"key": [
"article_code",
null
],
"id": "check",
"value": null
},
{
"key": [
"order",
null
],
"id": "check",
"value": null
},
{
"key": [
"order",
null
],
"id": "check",
"value": null
},
{
"key": [
"provider",
2313
],
"id": "check",
"value": null
},
{
"key": [
"provider",
2313
],
"id": "check",
"value": null
},
{
"key": [
"qty",
null
],
"id": "check",
"value": null
},
{
"key": [
"qty",
null
],
"id": "check",
"value": null
},
{
"key": [
"unit",
9
],
"id": "check",
"value": null
},
{
"key": [
"unit",
9
],
"id": "check",
"value": null
},
{
"key": [
"warehouse",
18
],
"id": "check",
"value": null
},
{
"key": [
"warehouse",
18
],
"id": "check",
"value": null
},
{
"key": [
"warehouse_company",
9
],
"id": "check",
"value": null
},
{
"key": [
"warehouse_company",
9
],
"id": "check",
"value": null
}
]
}
You can search for " warehouse" with id 18 like
using key=["warehouse",18]