[英]Node Js and Sequalize model to get data from two tables
我有一个模型,该模型将使用节点和均衡使人们回到我身边。 模型看起来像这样
class DbModel implements IModelMaker {
static _model: IDatabaseModel = null;
getModel(db: ISequelize): IDatabaseModel {
if (DbModel._model)
return DbModel._model;
const options = helper.getDatabaseDefaultOptions('people');
const entity: any = {};
entity['people_id'] = {type: Sequelize.UUID, primaryKey: true, 'defaultValue': Sequelize.UUIDV4};
entity['sexes_id'] = helper.getForeignKey('sexes_id', sexes.getModel(db));
entity['marital_states_id'] = helper.getForeignKey('marital_states_id', marital_states.getModel(db));
entity['employment_states_id'] = helper.getForeignKey('employment_states_id', employment_states.getModel(db));
entity['linkedins_id'] = helper.getForeignKey('linkedins_id', linkedins.getModel(db));
entity['facebooks_id'] = helper.getForeignKey('facebooks_id', facebooks.getModel(db));
entity['first_names'] = Sequelize.TEXT;
entity['surnames'] = Sequelize.TEXT;
entity['name_to_call_user'] = Sequelize.TEXT;
entity['id_number'] = Sequelize.TEXT;
entity['passport_number'] = Sequelize.TEXT;
entity['birth_date'] = Sequelize.DATEONLY;
entity['tax_number'] = Sequelize.TEXT;
entity['vat_number'] = Sequelize.TEXT;
entity['message_to_show_on_user_invoice'] = Sequelize.TEXT;
entity['workplace_name'] = Sequelize.TEXT;
entity['is_verified'] = Sequelize.BOOLEAN;
entity['has_private_profile_enabled'] = Sequelize.BOOLEAN;
entity['mobile_phone'] = Sequelize.TEXT;
entity['occupations_id'] = Sequelize.UUID;
entity['profile_photo_url'] = Sequelize.TEXT;
entity['private_profile_url'] = Sequelize.TEXT;
entity['public_profile_url'] = Sequelize.TEXT;
entity['description'] = Sequelize.TEXT;
entity['created_at'] = Sequelize.DATE;
const result = db.define('dbo.people', entity, options);
result.belongsTo(sexes.getModel(db), {foreignKey: 'sexes_id'});
result.belongsTo(marital_states.getModel(db), {foreignKey: 'marital_states_id'});
result.belongsTo(employment_states.getModel(db), {foreignKey: 'employment_states_id'});
result.belongsTo(linkedins.getModel(db), {foreignKey: 'linkedins_id'});
result.belongsTo(facebooks.getModel(db), {foreignKey: 'facebooks_id'});
DbModel._model = result;
return result;
}
这使我得到了存储在dbo.people表中的结果,这很棒,因为这正是我想要的,并且该模型对此非常有效。 现在,我要做的就是添加到该模型中并从另一个表中调用数据。 因此,我想从dbo.users_references
获取数据以使用此模型进行调用。
我的问题是,有没有一种方法可以将join语句添加到上面创建的模型中,或者我需要创建一个新模型并将其作为单独的函数调用。 第二种方法适用于我的情况,但是我想保持简单,因此,如果我可以将其全部集成到一个模型中,那么我会很高兴,否则我只能对另一个选择感到满意
您将需要为users_references
define
一个模型,并以与处理sexes
, marital_states
等相同的方式将其关联。当指定要include
时, marital_states
实际上将在查询时发生。
用法示例:
DbModel.findAll({
where: ...,
include: [
{ model: employment_states.getModel(db) },
{ model: users_references.getModel(db) }
]
});
如果这看起来有点麻烦,我很抱歉-是的,因为我收集到您的项目中有很多辅助逻辑,这些逻辑不在发布中。 您可能想要查看这些文档 ,但是坦白地说,它们对于如何从查询中的相关表中实际获取数据有些困惑,但是对于您所描述的内容,它们应该足够介绍。
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