sequelize.js

问题 I am getting a very strange problem with sequelize, When I try to call the function findAll it works fine (same for create and destroy), but when I try to call function "findById", it throws "findById is not a function" (same for "FindOne"). //works fine var gammes = models.gamme.findAll().then(function(gammes) { res.render('admin/gammes/gestion_gamme',{ layout: 'admin/layouts/structure' , gammes : gammes, js: "gammes" }); }); // throws models.gamme.findById is not a function models.gamme

问题 I have a complex set of associated models. The models are associated using join tables, each with an attribute called 'order'. I need to be able to query the parent model 'Page' and include the associated models, and sort those associations by the field 'order'. The following is having no effect on the results' sort order: db.Page.findAll({ include: [{ model: db.Gallery, order: ['order', 'DESC'], include: [{ model: db.Artwork, order: ['order', 'DESC'] }] }], }) 回答1: I believe you can do: db

问题 I need to pass something that is not a primitive to the data type. I am constructing something like this to send to the create method: const p2 = { location_model: { latitude: lat, longitude: lng }, establishment_id: createdEstablishment.id } As you can see the establishment_id is of type Integer but the location_model is an object This is my model module.exports = { up: (queryInterface, DataTypes) => { return queryInterface.createTable('EstablishmentLocation', { location_model: { type: //

问题 I need to pass something that is not a primitive to the data type. I am constructing something like this to send to the create method: const p2 = { location_model: { latitude: lat, longitude: lng }, establishment_id: createdEstablishment.id } As you can see the establishment_id is of type Integer but the location_model is an object This is my model module.exports = { up: (queryInterface, DataTypes) => { return queryInterface.createTable('EstablishmentLocation', { location_model: { type: //

问题 I want to make multiple Where / AND clauses for the same row: This is my request body "sub_categories":[ { "category_id":2 }, { "category_id":1 } ] This is my javascript code var where = {} if (subcategories != undefined) { subcategories.forEach(async (item) => { where['$subcategories.id$'] = item.category_id }); } Expected query to produce : SELECT * FROM TABLE where sub_categories .category_id = 1 AND sub_categories .category_id = 2 Questy that is given to me : SELECT * FROM TABLE where sub

问题 I want to add this CHECK in one of my tables. I am using Sequelize in a node.js api running on Postgres DB. CHECK ( ( CASE WHEN UserID IS NULL THEN 0 ELSE 1 END + CASE WHEN TableID IS NULL THEN 0 ELSE 1 END + CASE WHEN FoodID IS NULL THEN 0 ELSE 1 END + CASE WHEN RestaurantID IS NULL THEN 0 ELSE 1 END + CASE WHEN CategoryID IS NULL THEN 0 ELSE 1 END + CASE WHEN ShipID IS NULL THEN 0 ELSE 1 END ) = 1 ) So, I need the database to enforce the check on the table where one of those columns must be

问题 I want to make multiple Where / OR clauses for the same row: This is my request body "sub_categories":[ { "category_id":2 }, { "category_id":1 } ] This is my javascript code var where = [] if (subcategories != undefined && subcategories.length) { subcategories.forEach(async (item) => { where.push({ '$subcategories.id$': item.id }) }); } Expected query to produce : SELECT * FROM TABLE where ( sub_categories .category_id = 1 OR sub_categories .category_id = 2) Questy that is given to me :

问题 I want to make multiple Where / OR clauses for the same row: This is my request body "sub_categories":[ { "category_id":2 }, { "category_id":1 } ] This is my javascript code var where = [] if (subcategories != undefined && subcategories.length) { subcategories.forEach(async (item) => { where.push({ '$subcategories.id$': item.id }) }); } Expected query to produce : SELECT * FROM TABLE where ( sub_categories .category_id = 1 OR sub_categories .category_id = 2) Questy that is given to me :

问题 I am a little new to promises and Sequelize. I am trying to insert a new user to my SQLite-database using constraint. In the User -model I have flagged the email -property as unique , however when this constraint is not met the code inside the .then() -block is still executed. Code: User.create({ email: uname, password: psw }) .then(console.log('success')) .catch((err) => { console.log(err); }); Output: Success Executing (default): INSERT INTO `users` ... { SequelizeUniqueConstraintError:

问题 I'm having an issue with Sequelize because I don't know how to approach the problem. I have 3 tables : A (game), B(platform) and AB (game_platform). A can have 1 to many B and B can have 0 to many A. To do that I made an association table : AB. In Sequelize I created the A,B,AB models then I did : db.Game.belongsToMany(db.Platform, {as: 'Game', through: 'GamePlatformsJoin', foreignKey: 'game_platforms_fk_game'}); db.Platform.belongsToMany(db.Game, {as: 'Platform', through: 'GamePlatformsJoin'