Categories
Development

How do I create a queryset to display products that are linked to a category, that is shown by each category slug?

I have a product model and a productcategory model. The products are linked to the productcategory by a category attribute. I want to create a query that displays ONLY products that are in a category, when the webpage is displayed for that specific category. The way I have my views currently setup, I get an […]

Categories
Development

What is wrong with my Entity Framework and architecture?

I am developing a task tracker web app and you could see the full code here: https://github.com/KimSergey94/TaskTracker In short, admin, manager, client and employee are users of the app and admin is the boss of these roles. To illustrate, a manager can create a task received by a client and assign it to an employee. […]

Categories
Development HTTP

HTTP 404 with Nodejs app on ubuntu 18.04 AWS server running Nginx reverse proxy

I have moved my Nodejs (10.16) app to AWS ubuntu 18.04 running Nginx (17.4) reverse proxy from development after full testing. The problem I have is that there is http 404 to front end React Native request. Here is the log output on my front end: [12:50:39] I | ReactNativeJS ▶︎ ‘response in signup: ‘, […]

Categories
Development JSON

Fastest way to parse JSON from String when format is known

I want to parse a String into an internal JSON object (or equivalent) in Java. The usual libraries, Gson and Jackson, are way too slow for my needs (> 100us for each String to Json parse, according to my benchmarks). I know there are slightly faster libraries, but looking at the benchmarks online, the gains […]

Categories
Development Google

How do you debug google deployment manager templates?

Im looking at this example: https://github.com/GoogleCloudPlatform/deploymentmanager-samples/tree/master/examples/v2/cloud_functions which uses this template. I added a print statement to it, but how do I see this output? import base64 import hashlib from StringIO import StringIO import zipfile def GenerateConfig(ctx): “””Generate YAML resource configuration.””” in_memory_output_file = StringIO() function_name = ctx.env[‘deployment’] + ‘cf’ zip_file = zipfile.ZipFile( in_memory_output_file, mode=’w’, compression=zipfile.ZIP_DEFLATED) #################################################### […]

Categories
Development MongoDB

why mongodb speed of sort by subdocument field so slow?

my test collection has these fields { “block_number”: 123123, “value”: 555.55555 “transfers”: [ { “from”: “foo1”, “to”: “bar1”, “amount”: 111.111 }, { “from”: “foo2”, “to”: “bar2”, “amount”: 222.222 }, … { “from”: “foo3”, “to”: “bar3”, “amount”: 100.100 }, ] }, … { … } and I made indexes like this (at python code) tx_collection.create_index(“block_number”) tx_collection.create_index(“transfers.amount”) […]

Categories
Development

How to find related items based on a condition like minimum date in Neo4j?

I have a data model where we have projects and milestones. One project can have many milestones. I’d like to list each project and the milestone with the minimum date. In the case of: project1 -> milestone1 {date: ‘2019-01-01’} project1 -> milestone2 {date: ‘2019-3-03’} project2 -> milestone3 {date: ‘2018-01-01’} project2 -> milestone4 {date: ‘2019-03-03’} I […]

Categories
Development

Problem with comparing two characters, one of which I get from a string with an indirect addressing

So I am a newbie at assembly and I need some help with some memory addresses. (I think they are memory addresses but I am not sure) So, I have a string and I want to find where does the character % occurs. So, I made a loop, and moved the value 37 into a […]

Categories
Development

visual studio 2015 ssrs preview report no working

I am using VS 2015 with SSDT 2015. While I am creating an rdl report, the preview in VS is not working. I have checked the Data Source – everything is good with all credentials saved but still preview in VS is not working. Why isn’t the Preview working?

Categories
Development

Looping using for or For_each | Terraform 0.12

I need to create multiple subnets in GCP within a network. I am planning to use Terraform 0.12 syntax for the same as follows: project_name = [ “order-dev”, “ship-dev” ] variable “project_name” { type = list(string) description = “Name of the project” } resource “google_compute_subnetwork” “subnetwork” { name = “${var.project_name}-subnetwork” ip_cidr_range = var.subnet_ip_cidr_range region = […]