Questions about legality

I am a newbie, and a security issue suddenly occurred to me when I was writing code today. For various ajax requests, can hackers submit code externally? Because the JS file browser can see it, that is, it can know your code. So if a hacker uses our domain name to submit it externally, can PHP deter...

按键盘手指磨破皮 2017-09-01 14:07:24 0  3  1772

In the MVC development framework, when checking the validity of the content entered by the user when submitting, is it completed by c or m?

At present, when everyone uses the MVC development framework, when checking the legality of user-entered text on the user front-end, when the user submits, should this be handled by the C layer or the M layer?

phpcn_u1582 2017-05-16 17:06:31 0  13  1120

javascript - remote legality verification problem of input box value in form

1. The problem is this. There is an input box. I want to verify whether the value already exists in the database at the onBlur moment. Just like when we usually register an email, we will be prompted in real time whether the email name has been used. Previously, in the jquery era, ajax requests coul...

仅有的幸福 2017-07-05 11:04:40 0  2  941

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  834

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  732

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  625

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  591

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  1012

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  517

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  702

Spades, Diamonds, Hearts, Clubs => styles do not change font color in Chrome for Android

In Google Chrome on Windows, the card suit symbols (spades, hearts, diamonds, clubs) are colored correctly using the "style" attribute. Unfortunately, the same page displayed in Google Chrome on Android does not display the colors I defined but uses the default black and red. (See the atta...

P粉896751037 2023-09-05 15:25:13 0  1  764

How to hide mui TextField label?

I'm developing a Nextjs app and I have a dashboard navigation bar built with mui that contains a notification that opens the notification box, which is built with regular HTML and CSS. dashboard-navbar.js: importNotificationBoxfrom"./notification-box/notification-box";//...exportconstDashb...

P粉239164234 2023-09-05 15:41:00 0  1  692

Custom Bootstrap 5 carousel on mobile (multiple items, but not in one row)

I'm having trouble trying to customize the carousel layout on mobile devices. I want it to show every item of the carousel on mobile instead of just one, but after trying with some CSS and JS, especially using displayfloat or max-witdh I'm just starting to think this isn't possible, Or I don't know ...

P粉763662390 2023-09-05 11:53:56 0  1  599

How to use Firebase Authentication with multiple login methods and role-based authentication?

I am creating a react.js application with nodejs as backend and I want to use these authentication methods to login using email/password, login using google and login using phone, now I want to keep the uniqueness of the user while signing the user's name for Any of these, I will also get other deta...

P粉574695215 2023-09-05 12:18:10 0  1  663

If the table does not exist, insert into the table

I have an application where the user can add serial numbers (units) to a circuit. I'm trying to modify an insert query for two tables to check if a cell ID already exists. If it doesn't exist, I want to insert it, but if it does exist, I don't want to insert a new record. I have searched and tried t...

P粉546138344 2023-09-05 15:53:43 0  1  672

"Laravel joins two tables and calculates the sum of the columns of the given related table"

I have two tanulky star and video and relationship in model //in Star model publicfunctionvideos(){return$this->belongsToMany(Video::class);} and //in Video model publicfunctionuser(){return$ this->belongsTo(User::class);}If I execute $stars=Star::with('vi

P粉617597173 2023-09-05 16:22:37 0  1  561