node - mongodb database design mongoose schema

Order table design in a trading scenario: Suppose there are four products. The order data of each product must have the same parts, such as: order number, order owner, order type, order status, order tracking timeline, and different products at the same time. Orders also have their own special data....

扔个三星炸死你 2017-06-16 09:19:06 0  3  1062

How to create an alarm clock. Touch the screen with your finger to stop the alarm clock from ringing.

Please help me guys, how can I create an alarm clock? You can actively set the ringing time of the alarm clock (the ringing can be replaced by animation); the alarm clock will start playing the sound (or animation) when the set time is reached; touch the screen with your finger. You can stop the ala...

*黎晨暮光*~ 2019-12-10 18:33:04 0  0  1357

php - How to split large batches of data?

Hello everyone, there are 10,000 orders in the database, and various calculations need to be performed on the orders every day. The language used is php+mysql. Because so much order data was not considered in the previous design, I used a very conventional method of writing and updating all the data...

女神的闺蜜爱上我 2017-06-24 09:41:39 0  2  992

How to set the access route in Laravel when the form is submitted?

Form: {Code...} Route: {Code...} This way only the second one will be accessed. How to set routing so that after clicking the submit button (note: form action='' at this time), there is no need to transfer and access the current controller?

阿神 2017-05-16 16:46:45 0  3  535

Change the text of the "Pay Now" button on the WooCommerce checkout page to match the payment gateway option

I've been trying for hours now but can't get this "basic" thing to work anyway. I have a bunch of payment gateways available and I need to include their names (including order total amount) in the "Pay Now" button text. Example: "Pay for order $49 using Stripe" I have a...

P粉395056196 2023-08-16 14:51:27 0  1  774

Teaching course preview for September 12, 2018: Detailed explanation of dom operations in Javascript

1. Teaching topic: DOM operation content in Javascript. (The full name of DOM is Document Object Model, which allows js scripts to control Web pages, windows and documents.) For more detailed explanations of JavaScript knowledge points, please pay attention to tonight's live class on time! Lecturer:...

藏色散人 2018-09-12 14:45:26 0  0  1348

Error when running index.php

Teacher Zhu, unzip your courseware file to the project directory and an error will occur when running index.php. The database name has been changed to myblog. Please check what the problem is, thank you! Notice: Undefined variable: catList in E:\MyStudy\Php\myblog\public\inc\header_inc.php on line 5...

iUnicorn 2019-04-06 18:35:40 0  4  1514

Tips to improve WooCommerce member query speed: Optimize MySQL index

I have a WooCommerce membership based website using the Teams for WooCommerce membership extension. Despite having a huge user base (>70,000 users), it performs very well 95% of the time. We receive approximately 10,000 visits per day with response times of under one second. During peak seasons w...

P粉333186285 2023-08-26 11:09:08 0  1  624

Preview of the teaching course on September 20, 2018: Bootstrap framework basics and practice

1. Teaching Topic: Bootstrap Framework Basics and Practice Bootstrap is the most popular HTML, CSS and JS framework, used to develop responsive layout, mobile device-first WEB projects. Bootstrap is designed for all developers and all application scenarios, making front-end development faster and si...

藏色散人 2018-09-20 10:43:11 0  0  1442

Preview of teaching courses on September 14, 2018: Common DOM operations and practical cases

1. Teaching topic: Common DOM operations: Document Object Model (DOM, Document Object Model) is mainly used to operate the content of HTML and XML documents. DOM depicts a hierarchical node tree. By operating on nodes, functions such as adding, deleting, modifying, and searching document content can...

藏色散人 2018-09-14 10:52:17 0  0  1255

Voice live broadcast platform, voice system source code development services.

The current popularity of the live broadcast industry is obvious to all, but recently a popular model of "no appearance, only voice control" has emerged. This is - voice live broadcast. At the same time, the business model of live voice broadcast also triggers thinking. The live broadcasti...

qq3595750856 2020-07-03 15:21:52 0  0  1205

Is storing delimited lists in database columns really that bad?

Imagine a web form with a set of checkboxes (any or all of them can be selected). I chose to save them in a comma separated list of values ​​stored in a column in the database table. Now, I know the correct solution is to create a second table and normalize the database correctly. It's faster to imp...

P粉020556231 2023-08-27 19:52:49 0  2  490

Ways to fix issue 2003 (HY000): Unable to connect to MySQL server 'db_mysql:3306' (111)

I recently tried to containerize my FastAPIPython server (also for replication/doubling purposes). Before, I had just a MySQL server in a Docker container and everything was fine, but when I also made my web server a service, it couldn't connect to the MySQL server, so now the application doesn't wo...

P粉178132828 2023-09-05 11:18:47 0  1  819

Experiment with sorting after query limit

So this is my first question here, please forgive me if something is wrong. I'm trying to make a sort query based on constraints. So there is a Customers table with 90 records. I want to first perform a query limited to 3 records, and then sort the results of this query by a column called ContactNam...

P粉237125700 2023-09-05 14:46:42 0  1  721

CSS Grid: Create new row when child content overflows column width

I have a two column layout based on CSS grid. When the content of the second column exceeds 1fr I want to create a new row. As it currently stands, the content simply overflows the column. One requirement of this layout is that the items in the right menu column are in one row. I achieve this with: ...

P粉212114661 2023-09-05 15:18:28 0  1  611

PHP full text search functionality using AND, OR and NOT operators

Newbie question: I'm trying to implement a full text search on a search string using php and eloquent. $searchstring="+(victimsuspect)+crime-covid";$searchresult=RssItem::whereRaw("MATCH(description)AGAINST('$searchstring'INBOOLEANMODE)")->ge

P粉076987386 2023-09-05 15:06:32 0  1  574

Shortest way to convert all PHP types to string

I'm writing a general system that I hope can one day be applied to fields like medicine (i.e. it's "scientific"). I think the best way is to represent all the data in php with strings (true will be "true", false will be "false" and so on). The reason for this is that in...

P粉369196603 2023-09-05 15:34:44 0  1  1000

How to get average of DATETIME column in MySQL while grouping by other columns

I'm creating and populating a MySQL table using the following query: SETtime_zone='+00:00';CREATETABLEtimestamp_n_datetime(idINT,timeDATETIME,avg_timeDATETIME);INSERTINTOtimestamp_n_datetime(id,time,avg_time)VALUES("1","2023-01-0310:

P粉460377540 2023-09-05 11:46:21 0  1  505

Multi-device (mobile phone) synchronization - React Native

I'm trying to create a Lightshow that will launch on all users' mobile devices at the same time (can have up to 2000-3000 users). All users will use the Internet (Wi-Fi or mobile data). In our FE we use Apollo for subscriptions and it works like a charm. But the problem is, user A can get subscribed...

P粉151466081 2023-09-05 11:58:38 0  1  697