sequelize/dist/lib/associations/has-one.js

Sequelize is a promise-based Node.js ORM tool for Postgres, MySQL, MariaDB, SQLite, Microsoft SQL Server, Amazon Redshift and Snowflake’s Data Cloud. It features solid transaction support, relations, eager and lazy loading, read replication and more.

"use strict";
var __defProp = Object.defineProperty;
var __defProps = Object.defineProperties;
var __getOwnPropDescs = Object.getOwnPropertyDescriptors;
var __getOwnPropSymbols = Object.getOwnPropertySymbols;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __propIsEnum = Object.prototype.propertyIsEnumerable;
var __defNormalProp = (obj, key, value) => key in obj ? __defProp(obj, key, { enumerable: true, configurable: true, writable: true, value }) : obj[key] = value;
var __spreadValues = (a, b) => {
  for (var prop in b || (b = {}))
    if (__hasOwnProp.call(b, prop))
      __defNormalProp(a, prop, b[prop]);
  if (__getOwnPropSymbols)
    for (var prop of __getOwnPropSymbols(b)) {
      if (__propIsEnum.call(b, prop))
        __defNormalProp(a, prop, b[prop]);
    }
  return a;
};
var __spreadProps = (a, b) => __defProps(a, __getOwnPropDescs(b));
const Utils = require("./../utils");
const Helpers = require("./helpers");
const _ = require("lodash");
const Association = require("./base");
const Op = require("../operators");
class HasOne extends Association {
  constructor(source, target, options) {
    super(source, target, options);
    this.associationType = "HasOne";
    this.isSingleAssociation = true;
    this.foreignKeyAttribute = {};
    if (this.as) {
      this.isAliased = true;
      this.options.name = {
        singular: this.as
      };
    } else {
      this.as = this.target.options.name.singular;
      this.options.name = this.target.options.name;
    }
    if (_.isObject(this.options.foreignKey)) {
      this.foreignKeyAttribute = this.options.foreignKey;
      this.foreignKey = this.foreignKeyAttribute.name || this.foreignKeyAttribute.fieldName;
    } else if (this.options.foreignKey) {
      this.foreignKey = this.options.foreignKey;
    }
    if (!this.foreignKey) {
      this.foreignKey = Utils.camelize([
        Utils.singularize(this.options.as || this.source.name),
        this.source.primaryKeyAttribute
      ].join("_"));
    }
    if (this.options.sourceKey && !this.source.rawAttributes[this.options.sourceKey]) {
      throw new Error(`Unknown attribute "${this.options.sourceKey}" passed as sourceKey, define this attribute on model "${this.source.name}" first`);
    }
    this.sourceKey = this.sourceKeyAttribute = this.options.sourceKey || this.source.primaryKeyAttribute;
    this.sourceKeyField = this.source.rawAttributes[this.sourceKey].field || this.sourceKey;
    this.sourceKeyIsPrimary = this.sourceKey === this.source.primaryKeyAttribute;
    this.associationAccessor = this.as;
    this.options.useHooks = options.useHooks;
    if (this.target.rawAttributes[this.foreignKey]) {
      this.identifierField = this.target.rawAttributes[this.foreignKey].field || this.foreignKey;
    }
    const singular = _.upperFirst(this.options.name.singular);
    this.accessors = {
      get: `get${singular}`,
      set: `set${singular}`,
      create: `create${singular}`
    };
  }
  _injectAttributes() {
    const newAttributes = {
      [this.foreignKey]: __spreadValues({
        type: this.options.keyType || this.source.rawAttributes[this.sourceKey].type,
        allowNull: true
      }, this.foreignKeyAttribute)
    };
    if (this.options.constraints !== false) {
      const target = this.target.rawAttributes[this.foreignKey] || newAttributes[this.foreignKey];
      this.options.onDelete = this.options.onDelete || (target.allowNull ? "SET NULL" : "CASCADE");
      this.options.onUpdate = this.options.onUpdate || "CASCADE";
    }
    Helpers.addForeignKeyConstraints(newAttributes[this.foreignKey], this.source, this.target, this.options, this.sourceKeyField);
    Utils.mergeDefaults(this.target.rawAttributes, newAttributes);
    this.target.refreshAttributes();
    this.identifierField = this.target.rawAttributes[this.foreignKey].field || this.foreignKey;
    Helpers.checkNamingCollision(this);
    return this;
  }
  mixin(obj) {
    const methods = ["get", "set", "create"];
    Helpers.mixinMethods(this, obj, methods);
  }
  async get(instances, options) {
    const where = {};
    let Target = this.target;
    let instance;
    options = Utils.cloneDeep(options);
    if (Object.prototype.hasOwnProperty.call(options, "scope")) {
      if (!options.scope) {
        Target = Target.unscoped();
      } else {
        Target = Target.scope(options.scope);
      }
    }
    if (Object.prototype.hasOwnProperty.call(options, "schema")) {
      Target = Target.schema(options.schema, options.schemaDelimiter);
    }
    if (!Array.isArray(instances)) {
      instance = instances;
      instances = void 0;
    }
    if (instances) {
      where[this.foreignKey] = {
        [Op.in]: instances.map((_instance) => _instance.get(this.sourceKey))
      };
    } else {
      where[this.foreignKey] = instance.get(this.sourceKey);
    }
    if (this.scope) {
      Object.assign(where, this.scope);
    }
    options.where = options.where ? { [Op.and]: [where, options.where] } : where;
    if (instances) {
      const results = await Target.findAll(options);
      const result = {};
      for (const _instance of instances) {
        result[_instance.get(this.sourceKey, { raw: true })] = null;
      }
      for (const _instance of results) {
        result[_instance.get(this.foreignKey, { raw: true })] = _instance;
      }
      return result;
    }
    return Target.findOne(options);
  }
  async set(sourceInstance, associatedInstance, options) {
    options = __spreadProps(__spreadValues({}, options), { scope: false });
    const oldInstance = await sourceInstance[this.accessors.get](options);
    const alreadyAssociated = oldInstance && associatedInstance && this.target.primaryKeyAttributes.every((attribute) => oldInstance.get(attribute, { raw: true }) === (associatedInstance.get ? associatedInstance.get(attribute, { raw: true }) : associatedInstance));
    if (oldInstance && !alreadyAssociated) {
      oldInstance[this.foreignKey] = null;
      await oldInstance.save(__spreadProps(__spreadValues({}, options), {
        fields: [this.foreignKey],
        allowNull: [this.foreignKey],
        association: true
      }));
    }
    if (associatedInstance && !alreadyAssociated) {
      if (!(associatedInstance instanceof this.target)) {
        const tmpInstance = {};
        tmpInstance[this.target.primaryKeyAttribute] = associatedInstance;
        associatedInstance = this.target.build(tmpInstance, {
          isNewRecord: false
        });
      }
      Object.assign(associatedInstance, this.scope);
      associatedInstance.set(this.foreignKey, sourceInstance.get(this.sourceKeyAttribute));
      return associatedInstance.save(options);
    }
    return null;
  }
  async create(sourceInstance, values, options) {
    values = values || {};
    options = options || {};
    if (this.scope) {
      for (const attribute of Object.keys(this.scope)) {
        values[attribute] = this.scope[attribute];
        if (options.fields) {
          options.fields.push(attribute);
        }
      }
    }
    values[this.foreignKey] = sourceInstance.get(this.sourceKeyAttribute);
    if (options.fields) {
      options.fields.push(this.foreignKey);
    }
    return await this.target.create(values, options);
  }
  verifyAssociationAlias(alias) {
    if (typeof alias === "string") {
      return this.as === alias;
    }
    if (alias && alias.singular) {
      return this.as === alias.singular;
    }
    return !this.isAliased;
  }
}
module.exports = HasOne;
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