String to ISO Date - mongodb

Question

I've looked this up a few times and no answer has worked so far. I want to turn a string date into an ISODate - I don't want it converted to or from UTC, I just want to make the date value which is stored as string to be stored as a date.
I don't want UTC because I want to query against and calculate based upon a time of day (example: 12pm) anywhere in the world and I'm summing by hour, day, week and month and comparing data across many countries based upon local time.
Currently I have a date as a string which I want to add to a new document with a new name:
"transaction_date": "$object_raw_origin_data.register_sales.sale_date"
The date value as string below is shown as:
"sale_date" : "2018-03-13 20:05:46"
I want it to be: "transaction_date" : ISODate("2018-03-13 20:05:46")
The date and time must read 2018-03-13 20:05:46 not converted to UTC.
Thanks, Matt
Origin Data JSON
{
"object_category" : "application",
"object_type" : "register-sales-24-months",
"object_origin" : "vend",
"tenant_uuid" : "00000000-0000-0009-9999-999999999999",
"party_uuid" : "8d519765-05d2-469f-ad35-d7a22fa9df2f",
"subscription_uuid" : "0",
"connection_uuid" : "6ed9bd79-d9c5-4296-a821-7e15b1c69e6c",
"status" : "",
"object_created" : ISODate("2018-03-15T21:40:57.158+0000"),
"object_raw_origin_data" : {
"pagination" : {
"results" : NumberInt(75964),
"page" : NumberInt(1),
"page_size" : NumberInt(200),
"pages" : NumberInt(380)
},
"register_sales" : {
"id" : "776a66f2-993c-b372-11e8-26f9d3c1bdde",
"source" : "USER",
"source_id" : "",
"register_id" : "02dcd191-ae55-11e6-edd8-ec8dce1d9e1c",
"market_id" : "3",
"customer_id" : "02d59481-b67d-11e5-f667-b08185e8f6d5",
"customer_name" : "",
"customer" : {
"id" : "02d59481-b67d-11e5-f667-b08185e8f6d5",
"name" : "",
"customer_code" : "WALKIN",
"customer_group_id" : "02d59481-b67d-11e5-f667-b08185e893f8",
"customer_group_name" : "All Customers",
"updated_at" : "2016-01-01 12:16:44",
"deleted_at" : "",
"balance" : "0",
"year_to_date" : "0",
"date_of_birth" : "",
"sex" : "",
"custom_field_1" : "",
"custom_field_2" : "",
"custom_field_3" : "",
"custom_field_4" : "",
"note" : "",
"contact" : {
}
},
"user_id" : "02d59481-b655-11e5-f667-dca974edc4ea",
"user_name" : "Alvaro Velosa",
"sale_date" : "2018-03-13 20:05:46",
"created_at" : "2018-03-13 20:06:00",
"updated_at" : "2018-03-13 20:06:00",
"total_price" : 4.5,
"total_cost" : 3.34,
"total_tax" : NumberInt(0),
"tax_name" : "No Tax",
"note" : "",
"status" : "CLOSED",
"short_code" : "wqgsgi",
"invoice_number" : "Masonic2108Temple",
"accounts_transaction_id" : "",
"return_for" : "",
"register_sale_products" : [
{
"id" : "776a66f2-993c-b372-11e8-26f9e92cb9bc",
"product_id" : "02dcd191-ae55-11e7-f130-9d4f4bcd91b1",
"register_id" : "02dcd191-ae55-11e6-edd8-ec8dce1d9e1c",
"sequence" : "0",
"handle" : "LAGERDRAUGHT300",
"sku" : "10287",
"name" : "LAGER DRAUGHT £3.00",
"quantity" : NumberInt(1),
"price" : 3.5,
"cost" : 2.74,
"price_set" : NumberInt(0),
"discount" : NumberInt(0),
"loyalty_value" : NumberInt(0),
"tax" : NumberInt(0),
"tax_id" : "02d59481-b67d-11e5-f667-b08185ec2871",
"tax_name" : "No Tax",
"tax_rate" : NumberInt(0),
"tax_total" : NumberInt(0),
"price_total" : 3.5,
"display_retail_price_tax_inclusive" : "0",
"status" : "CONFIRMED",
"attributes" : [
{
"name" : "line_note",
"value" : ""
}
]
},
{
"id" : "776a66f2-993c-b372-11e8-26f9e98104e0",
"product_id" : "02dcd191-ae55-11e7-f130-9d50e948a0b5",
"register_id" : "02dcd191-ae55-11e6-edd8-ec8dce1d9e1c",
"sequence" : "0",
"handle" : "SOFTDRINK",
"sku" : "10292",
"name" : "SOFT DRINK",
"quantity" : NumberInt(1),
"price" : NumberInt(1),
"cost" : 0.6,
"price_set" : NumberInt(0),
"discount" : NumberInt(0),
"loyalty_value" : NumberInt(0),
"tax" : NumberInt(0),
"tax_id" : "02d59481-b67d-11e5-f667-b08185ec2871",
"tax_name" : "No Tax",
"tax_rate" : NumberInt(0),
"tax_total" : NumberInt(0),
"price_total" : NumberInt(1),
"display_retail_price_tax_inclusive" : "0",
"status" : "CONFIRMED",
"attributes" : [
{
"name" : "line_note",
"value" : ""
}
]
}
],
"totals" : {
"total_tax" : NumberInt(0),
"total_price" : 4.5,
"total_payment" : 4.5,
"total_to_pay" : NumberInt(0)
},
"register_sale_payments" : [
{
"id" : "776a66f2-993c-b372-11e8-26f9eab2cb46",
"payment_type_id" : "1",
"register_id" : "02dcd191-ae55-11e6-edd8-ec8dce1d9e1c",
"retailer_payment_type_id" : "02d59481-b655-11e5-f667-b0a23bc0e7bc",
"name" : "Cash",
"label" : "Account Customer",
"payment_date" : "2018-03-13 20:05:46",
"amount" : NumberInt(10)
},
{
"id" : "776a66f2-993c-b372-11e8-26f9eab6b21a",
"payment_type_id" : "1",
"register_id" : "02dcd191-ae55-11e6-edd8-ec8dce1d9e1c",
"retailer_payment_type_id" : "02d59481-b655-11e5-f667-b0a23bc0e7bc",
"name" : "Cash",
"label" : "Account Customer",
"payment_date" : "2018-03-13 20:05:46",
"amount" : -5.5
}
]
}
}
}

Answer 1

Thanks for the help from #Saleem and #Krishna however, I have tried to create an ISODate using a $concat of $substr from a string and it isn't working.
db.Vend_raw_transactions.aggregate(
[{
"$project": {
"object_origin": "$object_origin",
"company": "$party_uuid",
"connection": "$connection_uuid",
"object_creation_date": "$object_created",
// "transaction_date": "$object_raw_origin_data.register_sales.sale_date",
"transaction_date": {
"$dateFromString": {
"dateString": {
"$concat": [
"$substr": [ "$object_raw_origin_data.register_sales.sale_date", 0, 10 ],
"T",
"$substr": [ "$object_raw_origin_data.register_sales.sale_date", 11, 9]
]
}
}
},
"transaction_gross_value": {
"$add": [
"$object_raw_origin_data.register_sales.total_price",
"$object_raw_origin_data.register_sales.total_tax"
]
},
"transaction_net_value": "$object_raw_origin_data.register_sales.total_price",
"transaction_tax_value": "$object_raw_origin_data.register_sales.total_tax",
"transaction_cost_value": "$object_raw_origin_data.register_sales.total_cost",
"object_class": "goods-service-transaction",
"object_origin_category": "point-of-sale",
"object_type": "receipt",
"object_origin_type": "offline",
"transaction_reference": "$object_raw_origin_data.register_sales.invoice_number",
"transaction_status": "$object_raw_origin_data.register_sales.status",
"transaction_currency": "GBP",
"party_name": "$object_raw_origin_data.register_sales.customer.customer_name",
"party_identifier": "$object_raw_origin_data.register_sales.customer.customer_code",
"staff_identifier": "$object_raw_origin_data.register_sales.user_id",
"staff_name": "$object_raw_origin_data.register_sales.user_name",
"line_items" : {
"$map": {
"input": "$object_raw_origin_data.register_sales.register_sale_products",
"as" : "product",
"in": {"item_name": "$$product.name",
"item_system_id": "$$product.id",
"item_identifier": "$$product.sku",
"item_category" : "sales-revenue",
"item_quantity" : "$$product.quantity",
"item_net_unit_sale_value" : "$$product.price",
"item_net_unit_discount_value" : "$$product.discount",
"item_net_unit_member_value" : "$$product.loyalty_value",
"item_net_unit_cost_value" : "$$product.cost",
"item_unit_tax_value" : "$$product.tax",
"item_price_list_reference" : "$$product.price_set",
"item_total_sale_value" : "$$product.price_total",
"item_total_tax_value" : "$$product.tax_total"
}
}
}
}
}
// ,{"$out": "9SP_Source" }
])
I cannot work out why this isn't working, it seems like it should - I'm creating a new string based upon an existing string value and adding a T in the middle but it doesn't recognise $DateFromString. Thanks
Error Message
{
"message" : "Unrecognized expression '$dateFromString'",
"stack" : "MongoError: Unrecognized expression '$dateFromString'" +
"at queryCallback (C:\Users\mattl\AppData\Local\Programs\nosqlbooster4mongo\resources\app.asar\node_modules\mongodb-core\lib\cursor.js:223:25)" +
"at C:\Users\mattl\AppData\Local\Programs\nosqlbooster4mongo\resources\app.asar\node_modules\mongodb-core\lib\connection\pool.js:541:18" +
"at _combinedTickCallback (internal/process/next_tick.js:131:7)" +
"at process._tickCallback (internal/process/next_tick.js:180:9)",
"name" : "MongoError",
"ok" : 0,
"errmsg" : "Unrecognized expression '$dateFromString'",
"code" : 168,
"codeName" : "InvalidPipelineOperator"
}
I've managed to make another string using the below script but $dateFromString unrecognised
db.Vend_raw_transactions.aggregate(
[{
"$project": {
"origin_date": "$object_raw_origin_data.register_sales.sale_date",
"transaction_date": {
"$substr": [ "$object_raw_origin_data.register_sales.sale_date", 0, 10 ]
},
"transaction_time": {
"$substr": [ "$object_raw_origin_data.register_sales.sale_date", 11, 9 ]
},
"new_string_date": {
"$concat" :[
{"$substr": [ "$object_raw_origin_data.register_sales.sale_date", 0, 10 ]},
"T",
{"$substr": [ "$object_raw_origin_data.register_sales.sale_date", 11, 9 ]}]
}
}
}
])
Thanks