MySQL FullText Search with Sequelize - mysql

Question

I want to implement MySQL full text search with sequelize. The version "sequelize": "^3.23.6". I tried to research about this but could not find =the documentation that guides how to implement this.
Here is the link that says FullText is supported by sequelize:
https://github.com/sequelize/sequelize/issues/2979
But there is not exact documentation on how to do it and how to do a full text search query with sequelize.
Any links advice would be helpful
Thanks !

Answer 1

Since we now have the error message in recent Sequelize that looks like this:
Unhandled rejection Error: Support for literal replacements in the where object has been removed.
The solution would be to provide replacements manually
Payments.findAll({
where: Sequelize.literal('MATCH (SomeField) AGAINST (:name)'),
replacements: {
name: 'Alex'
}
});
Use arrays for more complex conditions:
Payments.findAll({
where: [
{ State: 'Paid' },
Sequelize.literal('MATCH (SomeField) AGAINST (:name)')
],
replacements: {
name: 'Alex'
}
});

Answer 2

Sequelize doesn’t fully support the full-text search feature. We can add a FULLTEXT index as easy as any other index. But operators supporting the MATCH (column) AGAINST (value) syntax haven’t been implemented.
My current solution to the problem consists of creating a regular model:
module.exports = (sequelize, DataTypes) => {
const Book = sequelize.define('Book', {
title: DataTypes.STRING,
description: DataTypes.TEXT,
isActive: DataTypes.BOOLEAN
}, {
indexes: [
// add a FULLTEXT index
{ type: 'FULLTEXT', name: 'text_idx', fields: ['description'] }
]
});
return Book;
};
And using a raw query for querying:
const against = 'more or less';
models.Book.find({
where: ['isActive = 1 AND MATCH (description) AGAINST(?)', [against]]
}).then((result) => {
console.log(result.title);
});
Using only MySQL it's not possible to get correct results if you trying to search for inflectional words, synonyms etc. MySQL developers consider adding dictionaries for full-text search (https://dev.mysql.com/worklog/task/?id=2428), but who knows when we will see it.
If you have to stick with MySQL, I suggest to take a look at Sphinx. It works properly with synonyms and inflectional words.

Answer 3

Since Sequlize does not support for fullText search.
Here is another approach for searching a string from a table
models.sequelize.query(
"SELECT * FROM tableName WHERE CONCAT(field1, '', field2, '', field3, '', field4 ) LIKE \"%" + keyword + "%\"",
{type: models.sequelize.QueryTypes.SELECT}).then(res => {
})

Answer 4

another approach, using single migration file
module.exports = {
up: (queryInterface, Sequelize) => queryInterface.createTable(
'Products',
{
id: {
type: Sequelize.UUID,
defaultValue: Sequelize.UUIDV4,
allowNull: false,
primaryKey: true,
},
name: {
type: Sequelize.STRING,
},
},
).then(() => queryInterface.addIndex('Products', ['name'], { type: 'FULLTEXT' })),
down: (queryInterface) => queryInterface.dropTable('Products'),
};

Answer 5

New updated Answer, Here I am searching for Locations that match my searchString.
Location.findAll({
where: {
name: sequelize.where(
sequelize.fn("LOWER", sequelize.col("name")),
"LIKE",
"%" + "You search text here"+ "%". <==== add your searchString Here
),
},
})