Laravel association model problem

Laravel association model problem

PHP中文网 2017-05-16 16:49:25 0  2  645

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 0  1  554

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 0  1  823

php - How to design the search association function database?

Dear friends, if you want to develop a search association drop-down function for secondary development, how should you design the database? Do I need to create a separate table to store keywords? Or should we directly query the keywords field in the original database?

淡淡烟草味 2017-06-06 09:51:48 0  1  840

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 0  7  1617

Association object - laravel\lumen How should conditional association be handled?

I currently have 3 tables, tags, product, and album. Tags related to product and album are all in tags. Distinguish by biz_type, 1 represents product, 2 represents album. The table relationship is as follows {code...} I now hope to obtain produ by querying the paging list of tags...

给我你的怀抱 2017-05-16 16:51:56 0  3  583

One-to-many problem in laravel

I now have two tables: one is the association list (list) and the user table (user). The fields of the list table {code...} user user table {code...} How to implement it: Association query to obtain the fields of each association The total number of members, for example: {code...} How to relate it?

高洛峰 2017-05-16 16:48:52 0  1  288

LCD Display in city construction

求翻译Smart Security Industry Association of Shenzhen/Security and Protection Industry Standards Alliance of Shenzhen holding .the market and the quality of the Oversight Committee, the Association of ex

丁铁明-众视**子 2018-04-20 16:25:30 0  0  2153

thinkphp model association sorting

How to sort scores in query results? Obtain the subject and score of the user's highest score? ? ? ?

棒槌 2018-08-12 15:33:04 0  0  1067

tp5.1 model association new updates

$user = \app\index\model\User::find($uid);          $user->totalpoint = $details['integral'] + $user['totalpoi

文 2019-06-25 11:52:32 0  1  1538

Symfony2 Doctrine association deletion problem

Entity NotifyOrderCreate {code...} Entity Order {code...} Find out that NotifyOrderCreate will also delete the order when executing remove. How can I break it?

習慣沉默 2017-05-16 16:44:12 0  1  598

MySQL, check if foreign key is assigned to any table

I have a table called files. Additionally, I have more than 100 tables in which I use association/foreign key file_id. How can I get all files for which no association exists (that is, the file is not attached to any table)?

P粉993712159 2023-08-17 12:51:10 0  1  550

java - When dealing with data relationships, what are the advantages and disadvantages of using database table foreign keys versus in-code maintenance?

Recently, I was designing a library table for an enterprise application project. I encountered some data association problems. I was undecided whether it would be better to maintain within the code or perform external association. I am seeking the opinions of experts.

曾经蜡笔没有小新 2017-05-17 10:08:48 0  2  568

What is the general relationship between Java classes? (non-aggregated combination)

After understanding the relationship between Java classes, we have basically understood the aggregation and combination relationships, but what are the general relationships besides aggregation and combination? Since the association relationship is an ownership relationship, in addition to the combi...

巴扎黑 2017-05-17 10:00:56 0  1  1059

How to save the owner of a group in Sequelize

I'm working with Sequelize and Koa. I created a user model and a group model using Sequelize-CLI. There is a many-to-many relationship between them. I want to store which user is the owner of the group by using his UUID. Do I create another association using a one-to-many association (1 user is the ...

P粉378264633 2023-09-13 14:14:39 0  1  584

Atom edited the html, but the Google page didn't change at all? How to set it up?

Atom edited the html, but the Google page didn’t change at all? How to set up the association?

P粉866787140 2022-10-25 16:05:36 0  3  1219

php - Yii relational table with optimized query to avoid N+1 query questions

For example: the details page of a post hasMany is associated with the comment table. The comment table hasOne is associated with the user table. The user table hasOne is associated with the user data table. Then for the comment list, the user table can be queried through the with('author') associat...

阿神 2017-06-10 09:47:45 0  2  1264