My question is straightforward - when doing a single select in sequelize, a model is returned. Inspecting this model reveals various options such as dataValues, _prevValues, _change, _options, isNewRecord, and more. What puzzles me is that you can also access the data values directly, for example, typing myModel.myCustomAttribute will work, whereas according to the data structure, I should be using myModel.dataValues.myCustomAttribute. How does sequelize manage this, and what am I overlooking?
An issue can arise in getter methods. When trying to access a value in the getter method using this.myProperty, a recursion problem may occur. To avoid this, it is recommended to use this.dataValues.myProperty instead. For example:
var Article = db.define('article', {
title: {
type: Sequelize.STRING,
allowNull: false,
validate: {
notEmpty: true
}
},
content: {
type: Sequelize.TEXT,
allowNull: false
},
tags: {
type: Sequelize.ARRAY(Sequelize.TEXT),
defaultValue: []
}
}, {
getterMethods: {
tags() {
return this.getDataValue.tags.join(', ');
}
}
});
In this scenario, using the following code:
getterMethods: {
tags() {
return this.tags.join(', ');
}
}
Would result in a recursive mess since tags() calls itself.
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