英文:
Sequelize join two tables on id
问题
我有一个书籍用户表和一个电影用户表。我试图返回前100名电影观众的列表，以及他们的书籍资料信息。我想要根据用户ID进行连接，但似乎找不到正确的语法。
这是我尝试过的代码：
const mostActiveMovieWatchers = await MovieWatchers.findAll({
order: [
['moviesWatched', 'DESC'],
],
limit: '100',
include: [{
model: BookReaders,
where: {
userId: '$MovieWatchers.id$'
},
required: true
}]
});
我还看到了一些示例，其中 where 子句看起来像这样：where: ['userId = id']。
英文:
I have a table of book users and a table of movie users. I'm trying to return a list of the top 100 movie viewers, along with their book profile information. I want to join on ids, but I can't seem to find the right syntax.
This is what I've tried:
const mostActiveMovieWatchers = await MovieWatchers.findAll({
order: [
['moviesWatched', 'DESC'],
],
limit: '100',
include: [{
model: BookReaders,
where: {
userId: '$MovieWatchers.id$'
},
required: true
}]
});
I've also seen examples where the where clause looks something like this where: ['userId = id']
答案1
得分: 0
Before join tables you need create association:
BookReaders.hasMany(MovieWatchers, { foreignKey: 'bookId' });
MovieWatchers.belongsTo(BookReaders, { foreignKey: 'bookId' });
Then, you can use the include option in a find or findAll method call on the MovieWatchers model to specify that you want to include the associated BookReaders data:
MovieWatchers.findAll({
include: [
{
model: BookReaders,
},
],
}).then((movies) => {
// array of movies including books
});
英文:
Before join tables you need create association:
BookReaders.hasMany(MovieWatchers, { foreignKey: 'bookId' });
MovieWatchers.belongsTo(BookReaders, { foreignKey: 'bookId' });
Then, you can use the include option in a find or findAll method call on the MovieWatchers model to specify that you want to include the associated BookReaders data:
MovieWatchers.findAll({
include: [
{
model: BookReaders,
},
],
}).then((movies) => {
// array of movies including books
});
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