This is currently what my entities look like:
Category Entity
#Entity('category')
export class Category extends BaseEntity {
#PrimaryGeneratedColumn("uuid")
id: string;
#Column({ type: 'text', unique: true })
name: string;
#Column({ type: "text", unique: true })
#Index()
slug: string;
#ManyToMany(() => Listing, (listing) => listing.categories, { cascade: true, onDelete: 'CASCADE' })
listings?: Listing[];
}
Listing Entity
#Entity('listing')
export class Listing extends BaseEntity {
#PrimaryGeneratedColumn("uuid")
id: string;
#ManyToMany(() => Category, (category) => category.listings)
#JoinTable()
categories: Category[];
}
Query 1 (what I'm currently using)
And this is currently what my query looks like:
const listings = await connection.getRepository()
.createQueryBuilder('listing')
.distinct(true)
.leftJoinAndSelect('listing.categories', 'category', 'category.slug IN (:...slugs)', {slugs: [ 'mens-shirts', 'clearance' ]})
.getMany()
Query 1 Result
[] // an empty list of Listings (Type: Listing[])
Query 2 (checking to see if the innerJoinAndSelect was working properly)
const listings = await connection.getRepository()
.createQueryBuilder('listing')
.distinct(true)
.innerJoinAndSelect('listing.categories', 'category')
.getMany();
Query 2 Result
[
Listing {
id: 'c24ea98d-da53-4f14-8706-a3597f3ee4d1',
categories: [ [Category], [Category] ]
},
Listing {
id: 'e8b3e680-85b6-4701-9ad7-bf65de348e76',
categories: [ [Category], [Category] ]
},
Listing {
id: '1bb04ea0-8435-44d6-856f-8eb53f24e941',
categories: [ [Category], [Category] ]
},
Listing {
id: '0735142d-fd38-4fad-b5a7-0356373dd0a3',
categories: [ [Category], [Category] ]
},
]
The innerJoinAndSelect method is working and giving me the results back, and I know why I'm getting an empty array when using the first query. It's because I'm trying to find the field slug on the Array of Categories, instead of each Category in the Array.
Question:
How would I search for the slug names [ 'mens-shirts', 'clearance' ], in the array of Categories (Type: Category[]), using TypeORM's QueryBuilder? Or How could I check to see if each Category in the Categories field, has a slug, that is in [ 'mens-shirts', 'clearance' ]. Is it possible?
You need to use = ANY() when searching if an element is inside an array. So change 'category.slug IN (:...slugs)' to 'category.slug = ANY(:slugs)' (notice how you don't need to use "spread" inside ANY, just reference the array directly)
Related
I want to get nested ref's value within the query I'm executing, but by default response is returning the ref of other collection. consider this minimum example; here are user and coin models, within "users" and "coins" collections
user { // ref: 123456
name: foo
location: bar
}
coin { // ref: 124457
amount: 5457
awardedTo: Ref(Collection("users"), "123456")
}
when I run this query
q.Get(q.Ref(q.Collection("coins"), "124457"))
the response is something like this:
{
data: {
amount: 5457,
awardedTo: #ref: {id: "123456", collection: {…}}
},
ref: #ref: {id: "124457", collection: {…}},
ts: 1622547855525255
}
But how is it possible to get nested user's value in the same query to have a response like this:
{
data: {
amount: 5457,
awardedTo: {
name: foo,
location: bar
}
},
ref: #ref: {id: "124457", collection: {…}},
ts: 1622547855525255
}
I have read Join's documentation but it wasn't helpful in this case, and also tried this way, but it didn't work either:
q.Let({
coin: q.Get(q.Ref(q.Collection("coins"), '124457'))
},
q.Union(
q.Get(q.Select(["data","awaredTo"], q.Var("coin"))),
q.Var("coins")
)
)
you can use this FQL:
Let(
{
coin: Select(['data'],Get(Ref(Collection("coin"), "1"))),
user: Select(['data'],Get(Select(['awardedTo'],Var('coin'))))
},
Merge(Var('coin'),{awardedTo:Var('user')})
)
It retrieves data from coin, extracts the user ref and merge all together.
Luigi
The problem is that data fetched by useGetList is sorted by ids of the objects and ignores the order by other keys given by my backend. This is my call example (try to order by name):
const { data, loading } = useGetList(
'my-controller-path',
{ page: 1, perPage: 10000 },
{ field: 'name', order: 'ASC' },
{}
)
console.log(data)
When I print data after this call, data is sorted by 'id' and not by 'name'. It's not a problem with the backend because I hardcoded returning data to eliminate this from equation. Data provided from backend:
data: [
{ id: 2, name: 'Ana'},
{ id: 3, name: 'Bea'},
{ id: 1, name: 'Cena'}
]
And when I print data on console after using useGetList:
[
{id: 1, name: "Cena"},
{id: 2, name: "Ana"},
{id: 3, name: "Bea"}
]
Any idea what is causing the problem? I read the source code of useGetList and don't quite understand if the problem lays there. The link to source code.
How does your API works ? In my case, I needed to map the sort properties like so:
getList: async (
resource,
{ pagination: { page, perPage }, sort: { field, order }, filter }
) => {
const query = {
...filter,
sort: order.toLowerCase(),
order: field,
page: JSON.stringify(page),
limit: JSON.stringify(perPage),
};
...
}
in my custom data provider to match my API sort and order properties.
In my application, I am using sequelize ORM. There are several entities: A Tool can have Tags and Categories.
Now I want to search for all Tools, that have a specific Tag, but I want to include all relating Tags of that tool (not just the specific one). If I now place a where statement into the include, only specified Tags are included into the result set (see [2]). I tried to limit the Tags in the outer where statement (see [1]), but this does not help either.
Example
Tool A has Tags t1, t2 and t3. Now I want to search all Tools that have the Tag t3, but the result set shall contain all three tags.
Expected result:
Tool A
\
- Tag t1
- Tag t2
- Tag t3
db.Tool.scope('published').findAll({
where: { '$tool.tag.name$': filter.tag }, // [1] Does not work
include: [
{
model: db.User,
attributes: ['id', 'username']
},
{
model: db.Tag,
attributes: ['name'],
through: { attributes: [] },
// [2] Would limit the result specified tag
// where: {
// name: {
// [Op.and]: filter.tag
// }
// }
},
{
model: db.Category,
attributes: ['id', 'name', 'views'],
through: { attributes: ['relevance'] },
where: {
id: {
[Op.and]: filter.category
}
}
}
],
where: {
title: {
[Op.like]: `%${filter.term}%`,
}
},
attributes: ['id', 'title', 'description', 'slug', 'docLink', 'vendor', 'vendorLink', 'views', 'status', 'createdAt'],
order: [['title', 'ASC'], [db.Tag, 'name', 'ASC']]
})
I know I could perform this by performing a select via the Tag in the first place (db.Tag.findAll() instead of db.Tool.findAll(); I've already done this elsewhere in my project), but at the same time I also want to be able to filter by another entity (Category) the same way. So the Tool.findAll() should be the starting point.
Any help appreciated!
First off, you have two where clauses in your top-level query:
where: { '$tool.tag.name$': filter.tag }, // [1] Does not work
// ...
where: {
title: {
[Op.like]: `%${filter.term}%`,
}
},
I think your best approach is going to be with a literal subquery in the WHERE clause. Basically we want to find the ids of all of the tools that have the right tag and that contain the filter.term.
The subquery part for the WHERE looks something like...
SELECT ToolId FROM ToolTags WHERE TagId='t2';
Inspired by the subquery solution from this post Sequelize - subquery in where clause
// assuming your join table is named 'ToolTags' in the database--we need the real table name not the model name
const tempSQL = sequelize.dialect.QueryGenerator.selectQuery('ToolTags',{
attributes: ['ToolId'],
where: {
TagId: filter.tag
}})
.slice(0,-1); // to remove the ';' from the end of the SQL
db.Tool.scope('published').findAll({
where: {
title: {
[Op.like]: `%${filter.term}%`,
},
id: {
[Op.In]: sequelize.literal(`(${tempSQL})`)
}
},
include: [
{
model: db.User,
attributes: ['id', 'username']
},
{
model: db.Tag,
attributes: ['name'],
through: { attributes: [] },
},
// {
// model: db.Category,
// attributes: ['id', 'name', 'views'],
// through: { attributes: ['relevance'] },
// where: {
// id: {
// [Op.and]: filter.category
// }
// }
// }
],
attributes: ['id', 'title', 'description', 'slug', 'docLink', 'vendor', 'vendorLink', 'views', 'status', 'createdAt'],
order: [['title', 'ASC'], [db.Tag, 'name', 'ASC']]
})
I commented out your category join for now. I think you should try to isolate the solution for the tags before adding more onto the query.
A table contains 2 user id cols, userOneId and userTwoId. My user id could be in either col. I'd like to get all rows where my userId is in either col, and also include the associated object of the other user.
Here's the latest attempt. I query where my id is in userOneId or userTwoId, make an alias for the other user id, otherUserId, with a case/when. Then use alias otherUserId in an include, to return the other user associated object.
where: {
[Op.or]: [{
userOneId: userId,
}, {
userTwoId: userId,
}]
},
attributes: [
'id',
[sequelize.literal("CASE WHEN \"userOneId\" = " + userId + " THEN \"userTwoId\" ELSE \"userOneId\" END"), 'otherUserId']
],
include: {
where: {
id: '$otherUserId$'
},
model: sequelize.models.User,
as: 'otherUser',
attributes: [ 'id', 'name', ...
Model associations are:
MyModel.belongsTo(models.User, {
as: 'userOne',
foreignKey: 'userOneId'
})
MyModel.belongsTo(models.User, {
as: 'userTwo',
foreignKey: 'userTwoId'
})
User.hasMany(models.MyModel, {
as: 'userOne',
foreignKey: {
name: 'userOneId',
allowNull: false
}
})
User.hasMany(models.MyModel, {
as: 'userTwo',
foreignKey: {
name: 'userTwoId',
allowNull: false
}
})
However, it errors with
User is associated to MyModel multiple times. To identify the correct association, you must use the 'as' keyword to specify the alias of the association you want to include.
Any pointers on if or how to get this to work?
I have tree models User, Company and UserCompany.
I have associations
Company.belongsToMany(User, {
as: 'users',
through: {
model: UserCompany,
unique: false
},
onDelete: 'cascade'
});
User.belongsToMany(Company, {
as: 'companies',
through: {
model: UserCompany,
unique: false
},
onDelete: 'cascade'
});
I am trying to query companies buy runing this code
sql.Company.findAll({
where: query,
include: [{model:sql.User, as:'users', attributes: ['id', 'first_name', 'last_name', 'email']}],
order: sort,
limit: limit,
offset: offset
})
I have two elements of UserCompany with CompanyId=10 and UserId=50, but query returns only one of them.
It returns array
{id: 10,
...,
users: {
id: 50,
...,
UserCompany: {}
}
}
So UserCompany is not array, it is just one element. But I want to get them all.
How can I fix my association code?
Your associations are right. The UserCompany property isn't supposed to be showing all of each user's UserCompany relationships -- it's just showing the one that got the user included in that query's results.
If what you're looking for is a list of companies associated with each user in the returned array, you can add an include for that:
Company.findAll({
include: [{
model: User,
as: 'users',
attributes: ['id', 'first_name', 'last_name', 'email'],
// Add this
include: [{
model: Company,
as: 'companies',
attributes: ['id', 'name']
}],
}],
})
This gives you the following format in the returned array:
{
id: 1,
first_name: 'Nelson',
last_name: 'Bighetti',
email: 'bighead#hooli.com',
UserCompany: {...},
companies: [
{ id: 1, name: 'Hooli', UserCompany: {...} },
{ id: 2, name: 'Pied Piper', UserCompany: {...} }
]
}