Asksearch_php.cn

Community

Learn

Tools Library

AI Tools

Leisure

English

Popular searches：
PHP
MySQL
jquery
HTML
CSS

Laravel association model problem

Laravel association model problem

PHP中文网 2017-05-16 16:49:25

laravel5.2.9 - laravel5 model association problem

I now have three tables, which are as follows {code...} {code...} {code...} Now this is the association method. The type and category fields in product correspond to the type_id and category table of the type table respectively. Please tell me how to write an association with the category_id field i...

習慣沉默 2017-05-16 16:49:37

java - Mybatis related query

In actual development, Mybatis one-to-many and many-to-many related queries use reultMap reference, javaType reference or select reference. Which one has better performance? Will using select lazy loading improve query speed and performance?

ringa_lee 2017-05-27 17:41:50

Retrieve nested related values in mysql

I'm trying to retrieve related values based on multiple entries in a database. I'm very new to MySQL when it comes to using JOINs etc and I'm trying to avoid involving PHP unnecessarily. When I say "retrieve nested related values", look at this example: "Person"table"Langu...

P粉007288593 2024-04-04 17:29:06

Is there any relevant source code information available for download?

Is there any relevant source code information available for download? Please download link

元曦 2017-08-21 10:52:52

Can PHP do data processing related to principal component analysis?

I want to make a management information system for managing data. I don’t know if PHP can implement related functions, or if I can call external programs to implement PHP, I am still very basic. I hope you guys can give me some guidance.

YOSIN_L 2019-02-14 16:25:42

python - Are there any related forums or books about Python web development?

Are there any related forums or books about python web? I have just read some python web books recently, but there are no specific project introductions. Is there any complete introduction to Python web projects? It is best to introduce a project from beginning to end. This complete...

淡淡烟草味 2017-05-16 13:31:19

TP5.1 Implement search function in multi-table related query

Problems with the multi-table associated search function: The code is as follows: // Implement the search function $productName = Request::param('productName'); $storeName = Request::param('storeName'); if ( !empty($productName) &a

Jackie 2020-06-16 22:43:38

Ask a question about related query in laravel

It is a many-to-many relationship. {Code...} Now I want to query the name field of the roles to which all users belong. How to write this related query using Eloquent ORM? solved. . {code...}

淡淡烟草味 2017-05-16 16:55:10

java - GreenDao creates association table problem.

1. greendao creates an association table. The above picture is the table creation method. The following is the error message. How to deal with this problem?

PHP中文网 2017-05-16 13:34:57

java - Is a set of hardware-related SDK required to control hardware devices?

Does controlling hardware devices require a set of hardware-related SDKs?

过去多啦不再A梦 2017-06-08 11:02:37

python - Django Admin creates a custom page not associated with any model

Since all Django Admin pages are associated with models, how do you create a page in the Admin background that is not associated with any model?

PHP中文网 2017-06-28 09:23:56

Please tell me how to operate the related table query?

The teacher taught single table query or simple query in class, but related query was not mentioned. How should I do it?

东东 2021-04-28 09:01:36

java - How to modify related tables

Attribute table attr Product table item association table item_attr Attribute table fields cat_id, title Product table fields item_id, title Product table fields item_attr_id, item_id, attr_id For example, there are 5 records in the attribute, and cat_id is 1, 2, 3, 4, and 5 respectively. Add a prod...

PHP中文网 2017-05-18 10:44:26

The page function definitely exists, but when accessed through the program, it prompts that the page function does not exist. What is causing this?

The page function definitely exists, but when accessed through the program, it prompts that the page function does not exist. What is causing this?

财神保佑 2022-02-24 11:42:46

mongodb - How to use a field other than the primary key _id to perform a related query?

Now there is an article post model that uses cateId to associate the Category category. But cateId is not _id. Resulting in an error when retrieving. Can I only associate through _id? How to use non-_id under Category to associate? {code...}

PHPz 2017-05-31 10:35:41

Sequelize: How to delete user related articles?

I have an article model where each article is related to a user: constArticles=db.define("Articles",{title:{type:DataTypes.STRING,allowNull:false,},description:{type:DataTypes.STRING ,allowNull:false,},img_url:{type:DataTypes.STRING

P粉212971745 2024-02-25 17:24:16

Mysql database generally uses ID or user name for association

I am a front-end person, and I am exploring while working on a personal PHP project. I need to pass a user ID through a connection to display the data of the corresponding user. I am using mysql. {Code...} So I would like to ask about how to make this ID. (Association) Generally, id or username is u...

三叔 2017-06-24 09:41:31

uwsgi - How to use nginx to associate django applications

Django: 1.6.5, python: 2.6, centOS: 6.5, nginx: 1.8.0-1 There are wsgi.py and prod.ini files under the django application. The prod.ini file: wsgi.py: But how to associate it with nginx , I installed nginx through yum install nginx, and modified /etc/nginx/con...

漂亮男人 2017-05-16 17:24:07

javascript - vue localStorages related routing value page refreshes error

Code related: I am just starting to learn Vue, and my js foundation is not very good. If there is anything wrong, feel free to criticize and point it out, thank you. The productList page jumps, and then the data in the local json array is taken according to the index value to display different page ...

ringa_lee 2017-07-05 10:55:50