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7 lines
11 KiB
7 lines
11 KiB
{ |
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"version": 3, |
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"sources": ["../../src/associations/belongs-to.js"], |
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"sourcesContent": ["'use strict';\n\nconst Utils = require('./../utils');\nconst Helpers = require('./helpers');\nconst _ = require('lodash');\nconst Association = require('./base');\nconst Op = require('../operators');\n\n/**\n * One-to-one association\n *\n * In the API reference below, add the name of the association to the method, e.g. for `User.belongsTo(Project)` the getter will be `user.getProject()`.\n *\n * @see {@link Model.belongsTo}\n */\nclass BelongsTo extends Association {\n constructor(source, target, options) {\n super(source, target, options);\n\n this.associationType = 'BelongsTo';\n this.isSingleAssociation = true;\n this.foreignKeyAttribute = {};\n\n if (this.as) {\n this.isAliased = true;\n this.options.name = {\n singular: this.as\n };\n } else {\n this.as = this.target.options.name.singular;\n this.options.name = this.target.options.name;\n }\n\n if (_.isObject(this.options.foreignKey)) {\n this.foreignKeyAttribute = this.options.foreignKey;\n this.foreignKey = this.foreignKeyAttribute.name || this.foreignKeyAttribute.fieldName;\n } else if (this.options.foreignKey) {\n this.foreignKey = this.options.foreignKey;\n }\n\n if (!this.foreignKey) {\n this.foreignKey = Utils.camelize(\n [\n this.as,\n this.target.primaryKeyAttribute\n ].join('_')\n );\n }\n\n this.identifier = this.foreignKey;\n if (this.source.rawAttributes[this.identifier]) {\n this.identifierField = this.source.rawAttributes[this.identifier].field || this.identifier;\n }\n\n if (\n this.options.targetKey\n && !this.target.rawAttributes[this.options.targetKey]\n ) {\n throw new Error(`Unknown attribute \"${this.options.targetKey}\" passed as targetKey, define this attribute on model \"${this.target.name}\" first`);\n }\n\n this.targetKey = this.options.targetKey || this.target.primaryKeyAttribute;\n this.targetKeyField = this.target.rawAttributes[this.targetKey].field || this.targetKey;\n this.targetKeyIsPrimary = this.targetKey === this.target.primaryKeyAttribute;\n this.targetIdentifier = this.targetKey;\n\n this.associationAccessor = this.as;\n this.options.useHooks = options.useHooks;\n\n // Get singular name, trying to uppercase the first letter, unless the model forbids it\n const singular = _.upperFirst(this.options.name.singular);\n\n this.accessors = {\n get: `get${singular}`,\n set: `set${singular}`,\n create: `create${singular}`\n };\n }\n\n // the id is in the source table\n _injectAttributes() {\n const newAttributes = {\n [this.foreignKey]: {\n type: this.options.keyType || this.target.rawAttributes[this.targetKey].type,\n allowNull: true,\n ...this.foreignKeyAttribute\n }\n };\n\n if (this.options.constraints !== false) {\n const source = this.source.rawAttributes[this.foreignKey] || newAttributes[this.foreignKey];\n this.options.onDelete = this.options.onDelete || (source.allowNull ? 'SET NULL' : 'NO ACTION');\n this.options.onUpdate = this.options.onUpdate || 'CASCADE';\n }\n\n Helpers.addForeignKeyConstraints(newAttributes[this.foreignKey], this.target, this.source, this.options, this.targetKeyField);\n Utils.mergeDefaults(this.source.rawAttributes, newAttributes);\n\n this.source.refreshAttributes();\n\n this.identifierField = this.source.rawAttributes[this.foreignKey].field || this.foreignKey;\n\n Helpers.checkNamingCollision(this);\n\n return this;\n }\n\n mixin(obj) {\n const methods = ['get', 'set', 'create'];\n\n Helpers.mixinMethods(this, obj, methods);\n }\n\n /**\n * Get the associated instance.\n *\n * @param {Model|Array<Model>} instances source instances\n * @param {object} [options] find options\n * @param {string|boolean} [options.scope] Apply a scope on the related model, or remove its default scope by passing false.\n * @param {string} [options.schema] Apply a schema on the related model\n *\n * @see\n * {@link Model.findOne} for a full explanation of options\n *\n * @returns {Promise<Model>}\n */\n async get(instances, options) {\n const where = {};\n let Target = this.target;\n let instance;\n\n options = Utils.cloneDeep(options);\n\n if (Object.prototype.hasOwnProperty.call(options, 'scope')) {\n if (!options.scope) {\n Target = Target.unscoped();\n } else {\n Target = Target.scope(options.scope);\n }\n }\n\n if (Object.prototype.hasOwnProperty.call(options, 'schema')) {\n Target = Target.schema(options.schema, options.schemaDelimiter);\n }\n\n if (!Array.isArray(instances)) {\n instance = instances;\n instances = undefined;\n }\n\n if (instances) {\n where[this.targetKey] = {\n [Op.in]: instances.map(_instance => _instance.get(this.foreignKey))\n };\n } else {\n if (this.targetKeyIsPrimary && !options.where) {\n return Target.findByPk(instance.get(this.foreignKey), options);\n }\n where[this.targetKey] = instance.get(this.foreignKey);\n options.limit = null;\n }\n\n options.where = options.where ?\n { [Op.and]: [where, options.where] } :\n where;\n\n if (instances) {\n const results = await Target.findAll(options);\n const result = {};\n for (const _instance of instances) {\n result[_instance.get(this.foreignKey, { raw: true })] = null;\n }\n\n for (const _instance of results) {\n result[_instance.get(this.targetKey, { raw: true })] = _instance;\n }\n\n return result;\n }\n\n return Target.findOne(options);\n }\n\n /**\n * Set the associated model.\n *\n * @param {Model} sourceInstance the source instance\n * @param {?Model|string|number} [associatedInstance] An persisted instance or the primary key of an instance to associate with this. Pass `null` or `undefined` to remove the association.\n * @param {object} [options={}] options passed to `this.save`\n * @param {boolean} [options.save=true] Skip saving this after setting the foreign key if false.\n *\n * @returns {Promise}\n */\n async set(sourceInstance, associatedInstance, options = {}) {\n let value = associatedInstance;\n\n if (associatedInstance instanceof this.target) {\n value = associatedInstance[this.targetKey];\n }\n\n sourceInstance.set(this.foreignKey, value);\n\n if (options.save === false) return;\n\n options = {\n fields: [this.foreignKey],\n allowNull: [this.foreignKey],\n association: true,\n ...options\n };\n\n // passes the changed field to save, so only that field get updated.\n return await sourceInstance.save(options);\n }\n\n /**\n * Create a new instance of the associated model and associate it with this.\n *\n * @param {Model} sourceInstance the source instance\n * @param {object} [values={}] values to create associated model instance with\n * @param {object} [options={}] Options passed to `target.create` and setAssociation.\n *\n * @see\n * {@link Model#create} for a full explanation of options\n *\n * @returns {Promise<Model>} The created target model\n */\n async create(sourceInstance, values, options) {\n values = values || {};\n options = options || {};\n\n const newAssociatedObject = await this.target.create(values, options);\n await sourceInstance[this.accessors.set](newAssociatedObject, options);\n\n return newAssociatedObject;\n }\n\n verifyAssociationAlias(alias) {\n if (typeof alias === 'string') {\n return this.as === alias;\n }\n\n if (alias && alias.singular) {\n return this.as === alias.singular;\n }\n\n return !this.isAliased;\n }\n}\n\nmodule.exports = BelongsTo;\nmodule.exports.BelongsTo = BelongsTo;\nmodule.exports.default = BelongsTo;\n"], |
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"names": [] |
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}
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