d2
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Javascript library for DHIS2
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<title>model/ModelCollectionProperty.js - Documentation</title>
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<h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><li><a href="GeoFeatures.html">GeoFeatures</a></li><li></li><li><a href="module-analytics.Analytics.html">Analytics</a><ul class='methods'><li data-type='method'><a href="module-analytics.Analytics.html#.getAnalytics">getAnalytics</a></li></ul></li><li><a href="module-analytics.AnalyticsAggregate.html">AnalyticsAggregate</a><ul class='methods'><li data-type='method'><a href="module-analytics.AnalyticsAggregate.html#get">get</a></li><li data-type='method'><a href="module-analytics.AnalyticsAggregate.html#getDataValueSet">getDataValueSet</a></li><li data-type='method'><a href="module-analytics.AnalyticsAggregate.html#getDebugSql">getDebugSql</a></li><li data-type='method'><a href="module-analytics.AnalyticsAggregate.html#getRawData">getRawData</a></li></ul></li><li><a href="module-analytics.AnalyticsEvents.html">AnalyticsEvents</a><ul class='methods'><li data-type='method'><a href="module-analytics.AnalyticsEvents.html#get">get</a></li><li data-type='method'><a href="module-analytics.AnalyticsEvents.html#getAggregate">getAggregate</a></li><li data-type='method'><a href="module-analytics.AnalyticsEvents.html#getCluster">getCluster</a></li><li data-type='method'><a href="module-analytics.AnalyticsEvents.html#getCount">getCount</a></li><li data-type='method'><a href="module-analytics.AnalyticsEvents.html#getQuery">getQuery</a></li></ul></li><li><a href="module-analytics.AnalyticsRequest.html">AnalyticsRequest</a><ul class='methods'><li data-type='method'><a href="module-analytics.AnalyticsRequest.html#fromModel">fromModel</a></li></ul></li><li><a href="module-api.Api.html">Api</a><ul class='methods'><li data-type='method'><a href="module-api.Api.html#get">get</a></li><li data-type='method'><a href="module-api.Api.html#patch">patch</a></li><li data-type='method'><a href="module-api.Api.html#post">post</a></li><li data-type='method'><a href="module-api.Api.html#setBaseUrl">setBaseUrl</a></li><li data-type='method'><a href="module-api.Api.html#setDefaultHeaders">setDefaultHeaders</a></li><li data-type='method'><a href="module-api.Api.html#setUnauthorizedCallback">setUnauthorizedCallback</a></li><li data-type='method'><a href="module-api.Api.html#update">update</a></li></ul></li><li><a href="module-current-user.CurrentUser.html">CurrentUser</a><ul class='methods'><li data-type='method'><a href="module-current-user.CurrentUser.html#.create">create</a></li><li data-type='method'><a href="module-current-user.CurrentUser.html#canCreate">canCreate</a></li><li data-type='method'><a href="module-current-user.CurrentUser.html#canCreatePrivate">canCreatePrivate</a></li><li data-type='method'><a href="module-current-user.CurrentUser.html#canCreatePublic">canCreatePublic</a></li><li data-type='method'><a href="module-current-user.CurrentUser.html#canDelete">canDelete</a></li><li data-type='method'><a href="module-current-user.CurrentUser.html#canUpdate">canUpdate</a></li><li data-type='method'><a href="module-current-user.CurrentUser.html#getDataViewOrganisationUnits">getDataViewOrganisationUnits</a></li><li data-type='method'><a href="module-current-user.CurrentUser.html#getOrganisationUnits">getOrganisationUnits</a></li><li data-type='method'><a href="module-current-user.CurrentUser.html#getUserGroupIds">getUserGroupIds</a></li><li data-type='method'><a href="module-current-user.CurrentUser.html#getUserGroups">getUserGroups</a></li><li data-type='method'><a href="module-current-user.CurrentUser.html#getUserRoles">getUserRoles</a></li></ul></li><li><a href="module-current-user.UserAuthorities.html">UserAuthorities</a><ul class='methods'><li data-type='method'><a href="module-current-user.UserAuthorities.html#.create">create</a></li><li data-type='method'><a href="module-current-user.UserAuthorities.html#has">has</a></li></ul></li><li><a href="module-current-user.UserDataStore.html">UserDataStore</a><ul class='methods'><li data-type='method'><a href="module-current-user.UserDataStore.html#.getUserDataStore">getUserDataStore</a></li><li data-type='method'><a href="module-current-user.UserDataStore.html#create">create</a></li><li data-type='method'><a href="module-current-user.UserDataStore.html#delete">delete</a></li><li data-type='method'><a href="module-current-user.UserDataStore.html#get">get</a></li><li data-type='method'><a href="module-current-user.UserDataStore.html#getAll">getAll</a></li><li data-type='method'><a href="module-current-user.UserDataStore.html#has">has</a></li></ul></li><li><a href="module-current-user.UserDataStoreNamespace.html">UserDataStoreNamespace</a><ul class='methods'><li data-type='method'><a href="module-current-user.UserDataStoreNamespace.html#delete">delete</a></li><li data-type='method'><a href="module-current-user.UserDataStoreNamespace.html#get">get</a></li><li data-type='method'><a href="module-current-user.UserDataStoreNamespace.html#getKeys">getKeys</a></li><li data-type='method'><a href="module-current-user.UserDataStoreNamespace.html#set">set</a></li><li data-type='method'><a href="module-current-user.UserDataStoreNamespace.html#update">update</a></li></ul></li><li><a href="module-current-user.UserSettings.html">UserSettings</a><ul class='methods'><li data-type='method'><a href="module-current-user.UserSettings.html#all">all</a></li><li data-type='method'><a href="module-current-user.UserSettings.html#get">get</a></li><li data-type='method'><a href="module-current-user.UserSettings.html#set">set</a></li></ul></li><li><a href="module-datastore.DataStore.html">DataStore</a><ul class='methods'><li data-type='method'><a href="module-datastore.DataStore.html#.getDataStore">getDataStore</a></li><li data-type='method'><a href="module-datastore.DataStore.html#create">create</a></li><li data-type='method'><a href="module-datastore.DataStore.html#delete">delete</a></li><li data-type='method'><a href="module-datastore.DataStore.html#get">get</a></li><li data-type='method'><a href="module-datastore.DataStore.html#getAll">getAll</a></li><li data-type='method'><a href="module-datastore.DataStore.html#has">has</a></li></ul></li><li><a href="module-datastore.DataStoreNamespace.html">DataStoreNamespace</a><ul class='methods'><li data-type='method'><a href="module-datastore.DataStoreNamespace.html#delete">delete</a></li><li data-type='method'><a href="module-datastore.DataStoreNamespace.html#get">get</a></li><li data-type='method'><a href="module-datastore.DataStoreNamespace.html#getKeys">getKeys</a></li><li data-type='method'><a href="module-datastore.DataStoreNamespace.html#getMetaData">getMetaData</a></li><li data-type='method'><a href="module-datastore.DataStoreNamespace.html#set">set</a></li><li data-type='method'><a href="module-datastore.DataStoreNamespace.html#update">update</a></li></ul></li><li><a href="module-i18n-I18n.html">I18n</a><ul class='methods'><li data-type='method'><a href="module-i18n-I18n.html#.getI18n">getI18n</a></li><li data-type='method'><a href="module-i18n-I18n.html#addSource">addSource</a></li><li data-type='method'><a href="module-i18n-I18n.html#addStrings">addStrings</a></li><li data-type='method'><a href="module-i18n-I18n.html#getTranslation">getTranslation</a></li><li data-type='method'><a href="module-i18n-I18n.html#getUntranslatedStrings">getUntranslatedStrings</a></li><li data-type='method'><a href="module-i18n-I18n.html#isTranslated">isTranslated</a></li><li data-type='method'><a href="module-i18n-I18n.html#load">load</a></li></ul></li><li><a href="module-model.Filter.html">Filter</a><ul class='methods'><li data-type='method'><a href="module-model.Filter.html#.getFilter">getFilter</a></li><li data-type='method'><a href="module-model.Filter.html#equals">equals</a></li><li data-type='method'><a href="module-model.Filter.html#ilike">ilike</a></li><li data-type='method'><a href="module-model.Filter.html#in">in</a></li><li data-type='method'><a href="module-model.Filter.html#like">like</a></li><li data-type='method'><a href="module-model.Filter.html#notEqual">notEqual</a></li><li data-type='method'><a href="module-model.Filter.html#notIn">notIn</a></li><li data-type='method'><a href="module-model.Filter.html#nToken">nToken</a></li><li data-type='method'><a href="module-model.Filter.html#on">on</a></li><li data-type='method'><a href="module-model.Filter.html#operator">operator</a></li><li data-type='method'><a href="module-model.Filter.html#token">token</a></li></ul></li><li><a href="module-model.Filters.html">Filters</a><ul class='methods'><li data-type='method'><a href="module-model.Filters.html#.getFilters">getFilters</a></li><li data-type='method'><a href="module-model.Filters.html#getFilterList">getFilterList</a></li><li data-type='method'><a href="module-model.Filters.html#getFilters">getFilters</a></li><li data-type='method'><a href="module-model.Filters.html#getQueryFilterValues">getQueryFilterValues</a></li><li data-type='method'><a href="module-model.Filters.html#list">list</a></li><li data-type='method'><a href="module-model.Filters.html#logicMode">logicMode</a></li><li data-type='method'><a href="module-model.Filters.html#on">on</a></li></ul></li><li><a href="module-model.Model.html">Model</a><ul class='methods'><li data-type='method'><a href="module-model.Model.html#.create">create</a></li></ul></li><li><a href="module-model.ModelBase.html">ModelBase</a><ul class='methods'><li data-type='method'><a href="module-model.ModelBase.html#create">create</a></li><li data-type='method'><a href="module-model.ModelBase.html#delete">delete</a></li><li data-type='method'><a href="module-model.ModelBase.html#getCollectionChildren">getCollectionChildren</a></li><li data-type='method'><a href="module-model.ModelBase.html#getCollectionChildrenPropertyNames">getCollectionChildrenPropertyNames</a></li><li data-type='method'><a href="module-model.ModelBase.html#getDirtyChildren">getDirtyChildren</a></li><li data-type='method'><a href="module-model.ModelBase.html#getDirtyPropertyNames">getDirtyPropertyNames</a></li><li data-type='method'><a href="module-model.ModelBase.html#getEmbeddedObjectCollectionPropertyNames">getEmbeddedObjectCollectionPropertyNames</a></li><li data-type='method'><a href="module-model.ModelBase.html#getReferenceProperties">getReferenceProperties</a></li><li data-type='method'><a href="module-model.ModelBase.html#hasDirtyChildren">hasDirtyChildren</a></li><li data-type='method'><a href="module-model.ModelBase.html#isDirty">isDirty</a></li><li data-type='method'><a href="module-model.ModelBase.html#resetDirtyState">resetDirtyState</a></li><li data-type='method'><a href="module-model.ModelBase.html#save">save</a></li><li data-type='method'><a href="module-model.ModelBase.html#toJSON">toJSON</a></li><li data-type='method'><a href="module-model.ModelBase.html#validate">validate</a></li></ul></li><li><a href="module-model.ModelCollection.html">ModelCollection</a><ul class='methods'><li data-type='method'><a href="module-model.ModelCollection.html#add">add</a></li><li data-type='method'><a href="module-model.ModelCollection.html#clear">clear</a></li><li data-type='method'><a href="module-model.ModelCollection.html#toArray">toArray</a></li></ul></li><li><a href="module-model.ModelCollectionProperty.html">ModelCollectionProperty</a><ul class='methods'><li data-type='method'><a href="module-model.ModelCollectionProperty.html#.create">create</a></li><li data-type='method'><a href="module-model.ModelCollectionProperty.html#add">add</a></li><li data-type='method'><a href="module-model.ModelCollectionProperty.html#isDirty">isDirty</a></li><li data-type='method'><a href="module-model.ModelCollectionProperty.html#remove">remove</a></li><li data-type='method'><a href="module-model.ModelCollectionProperty.html#resetDirtyState">resetDirtyState</a></li><li data-type='method'><a href="module-model.ModelCollectionProperty.html#save">save</a></li><li data-type='method'><a href="module-model.ModelCollectionProperty.html#updateDirty">updateDirty</a></li></ul></li><li><a href="module-model.ModelDefinition.html">ModelDefinition</a><ul class='methods'><li data-type='method'><a href="module-model.ModelDefinition.html#.createFromSchema">createFromSchema</a></li><li data-type='method'><a href="module-model.ModelDefinition.html#create">create</a></li><li data-type='method'><a href="module-model.ModelDefinition.html#delete">delete</a></li><li data-type='method'><a href="module-model.ModelDefinition.html#get">get</a></li><li data-type='method'><a href="module-model.ModelDefinition.html#getOwnedPropertyNames">getOwnedPropertyNames</a></li><li data-type='method'><a href="module-model.ModelDefinition.html#getTranslatableProperties">getTranslatableProperties</a></li><li data-type='method'><a href="module-model.ModelDefinition.html#getTranslatablePropertiesWithKeys">getTranslatablePropertiesWithKeys</a></li><li data-type='method'><a href="module-model.ModelDefinition.html#isTranslatable">isTranslatable</a></li><li data-type='method'><a href="module-model.ModelDefinition.html#list">list</a></li><li data-type='method'><a href="module-model.ModelDefinition.html#save">save</a></li></ul></li><li><a href="module-model.ModelDefinitions.html">ModelDefinitions</a><ul class='methods'><li data-type='method'><a href="module-model.ModelDefinitions.html#add">add</a></li><li data-type='method'><a href="module-model.ModelDefinitions.html#mapThroughDefinitions">mapThroughDefinitions</a></li></ul></li><li><a href="module-model.ModelValidation.html">ModelValidation</a><ul class='methods'><li data-type='method'><a href="module-model.ModelValidation.html#.getModelValidation">getModelValidation</a></li><li data-type='method'><a href="module-model.ModelValidation.html#validate">validate</a></li><li data-type='method'><a href="module-model.ModelValidation.html#validateAgainstSchema">validateAgainstSchema</a></li></ul></li><li><a href="module-model.Pager.html">Pager</a><ul class='methods'><li data-type='method'><a href="module-model.Pager.html#getNextPage">getNextPage</a></li><li data-type='method'><a href="module-model.Pager.html#getPreviousPage">getPreviousPage</a></li><li data-type='method'><a href="module-model.Pager.html#goToPage">goToPage</a></li><li data-type='method'><a href="module-model.Pager.html#hasNextPage">hasNextPage</a></li><li data-type='method'><a href="module-model.Pager.html#hasPreviousPage">hasPreviousPage</a></li></ul></li><li><a href="module-system.System.html">System</a><ul class='methods'><li data-type='method'><a href="module-system.System.html#.compareVersions">compareVersions</a></li><li data-type='method'><a href="module-system.System.html#.getSystem">getSystem</a></li><li data-type='method'><a href="module-system.System.html#.isVersionCompatible">isVersionCompatible</a></li><li data-type='method'><a href="module-system.System.html#.parseVersionString">parseVersionString</a></li><li data-type='method'><a href="module-system.System.html#installAppVersion">installAppVersion</a></li><li data-type='method'><a href="module-system.System.html#loadAppStore">loadAppStore</a></li><li data-type='method'><a href="module-system.System.html#loadInstalledApps">loadInstalledApps</a></li><li data-type='method'><a href="module-system.System.html#reloadApps">reloadApps</a></li><li data-type='method'><a href="module-system.System.html#setInstalledApps">setInstalledApps</a></li><li data-type='method'><a href="module-system.System.html#setSystemInfo">setSystemInfo</a></li><li data-type='method'><a href="module-system.System.html#uninstallApp">uninstallApp</a></li><li data-type='method'><a href="module-system.System.html#uploadApp">uploadApp</a></li></ul></li><li><a href="module-system.SystemConfiguration.html">SystemConfiguration</a><ul class='methods'><li data-type='method'><a href="module-system.SystemConfiguration.html#all">all</a></li><li data-type='method'><a href="module-system.SystemConfiguration.html#get">get</a></li></ul></li><li><a href="module-system.SystemSettings.html">SystemSettings</a><ul class='methods'><li data-type='method'><a href="module-system.SystemSettings.html#all">all</a></li><li data-type='method'><a href="module-system.SystemSettings.html#get">get</a></li></ul></li></ul><h3>Modules</h3><ul><li><a href="module-analytics.html">analytics</a></li><li><a href="module-api.html">api</a></li><li><a href="module-current-user.html">current-user</a></li><li><a href="module-d2.html">d2</a><ul class='members'><li data-type='member'><a href="module-d2.html#.config">config</a></li></ul><ul class='methods'><li data-type='method'><a href="module-d2.html#.getInstance">getInstance</a></li><li data-type='method'><a href="module-d2.html#.getManifest">getManifest</a></li><li data-type='method'><a href="module-d2.html#.init">init</a></li><li data-type='method'><a href="module-d2.html#~getUserSettings">getUserSettings</a></li></ul></li><li><a href="module-datastore.html">datastore</a></li><li><a href="module-i18n.html">i18n</a></li><li><a href="module-lib_check.html">lib/check</a><ul class='methods'><li data-type='method'><a href="module-lib_check.html#.checkDefined">checkDefined</a></li><li data-type='method'><a href="module-lib_check.html#.isValidUid">isValidUid</a></li></ul></li><li><a href="module-lib_utils.html">lib/utils</a><ul class='methods'><li data-type='method'><a href="module-lib_utils.html#.customEncodeURIComponent">customEncodeURIComponent</a></li><li data-type='method'><a href="module-lib_utils.html#.pick">pick</a></li></ul></li><li><a href="module-model.html">model</a></li><li><a href="module-period_generators.html">period/generators</a><ul class='methods'><li data-type='method'><a href="module-period_generators.html#.createPeriodGeneratorsForLocale">createPeriodGeneratorsForLocale</a></li></ul></li><li><a href="module-system.html">system</a></li><li><a href="module-uid.html">uid</a><ul class='methods'><li data-type='method'><a href="module-uid.html#.generateUid">generateUid</a></li><li data-type='method'><a href="module-uid.html#.isValidUid">isValidUid</a></li></ul></li></ul><h3>Namespaces</h3><ul><li><a href="module-d2.init-d2.html">d2</a></li></ul><h3>Tutorials</h3><ul><li><a href="tutorial-FAQ.html">FAQ</a></li><li><a href="tutorial-overview.html">overview</a></li></ul><h3>Global</h3><ul><li><a href="global.html#addDataDimension">addDataDimension</a></li><li><a href="global.html#addDataFilter">addDataFilter</a></li><li><a href="global.html#addDimension">addDimension</a></li><li><a href="global.html#addFilter">addFilter</a></li><li><a href="global.html#addOrgUnitDimension">addOrgUnitDimension</a></li><li><a href="global.html#addOrgUnitFilter">addOrgUnitFilter</a></li><li><a href="global.html#addPeriodDimension">addPeriodDimension</a></li><li><a href="global.html#addPeriodFilter">addPeriodFilter</a></li><li><a href="global.html#byOrgUnit">byOrgUnit</a></li><li><a href="global.html#computeWeekBasedPeriod">computeWeekBasedPeriod</a></li><li><a href="global.html#getAll">getAll</a></li><li><a href="global.html">getGeoFeatures</a></li><li><a href="global.html">isValidDisplayName</a></li><li><a href="global.html">isValidOrgUnit</a></li><li><a href="global.html">isValidOrgUnitGroup</a></li><li><a href="global.html">isValidOrgUnitLevel</a></li><li><a href="global.html">isValidUserOrgUnit</a></li><li><a href="global.html#withAggregateData">withAggregateData</a></li><li><a href="global.html#withAggregationType">withAggregationType</a></li><li><a href="global.html#withApprovalLevel">withApprovalLevel</a></li><li><a href="global.html#withAsc">withAsc</a></li><li><a href="global.html#withBbox">withBbox</a></li><li><a href="global.html#withClusterSize">withClusterSize</a></li><li><a href="global.html#withCollapseDataDimensions">withCollapseDataDimensions</a></li><li><a href="global.html#withColumns">withColumns</a></li><li><a href="global.html#withCoordinateField">withCoordinateField</a></li><li><a href="global.html#withCoordinatesOnly">withCoordinatesOnly</a></li><li><a href="global.html#withDesc">withDesc</a></li><li><a href="global.html#withDisplayProperty">withDisplayProperty</a></li><li><a href="global.html#withEndDate">withEndDate</a></li><li><a href="global.html#withEventStatus">withEventStatus</a></li><li><a href="global.html#withFormat">withFormat</a></li><li><a href="global.html#withHideEmptyColumns">withHideEmptyColumns</a></li><li><a href="global.html#withHideEmptyRows">withHideEmptyRows</a></li><li><a href="global.html#withHierarchyMeta">withHierarchyMeta</a></li><li><a href="global.html#withIgnoreLimit">withIgnoreLimit</a></li><li><a href="global.html#withIncludeClusterPoints">withIncludeClusterPoints</a></li><li><a href="global.html#withIncludeMetadataDetails">withIncludeMetadataDetails</a></li><li><a href="global.html#withIncludeNumDen">withIncludeNumDen</a></li><li><a href="global.html#withInputIdScheme">withInputIdScheme</a></li><li><a href="global.html#withLimit">withLimit</a></li><li><a href="global.html#withMeasureCriteria">withMeasureCriteria</a></li><li><a href="global.html#withOuMode">withOuMode</a></li><li><a href="global.html#withOutputIdScheme">withOutputIdScheme</a></li><li><a href="global.html#withOutputType">withOutputType</a></li><li><a href="global.html#withPage">withPage</a></li><li><a href="global.html#withPageSize">withPageSize</a></li><li><a href="global.html#withParameters">withParameters</a></li><li><a href="global.html#withPath">withPath</a></li><li><a href="global.html#withPreAggregationMeasureCriteria">withPreAggregationMeasureCriteria</a></li><li><a href="global.html#withProgram">withProgram</a></li><li><a href="global.html#withProgramStatus">withProgramStatus</a></li><li><a href="global.html#withRelativePeriodDate">withRelativePeriodDate</a></li><li><a href="global.html#withRows">withRows</a></li><li><a href="global.html#withShowHierarchy">withShowHierarchy</a></li><li><a href="global.html#withSkipData">withSkipData</a></li><li><a href="global.html#withSkipMeta">withSkipMeta</a></li><li><a href="global.html#withSkipRounding">withSkipRounding</a></li><li><a href="global.html#withSortOrder">withSortOrder</a></li><li><a href="global.html#withStage">withStage</a></li><li><a href="global.html#withStartDate">withStartDate</a></li><li><a href="global.html#withTableLayout">withTableLayout</a></li><li><a href="global.html#withUserOrgUnit">withUserOrgUnit</a></li><li><a href="global.html#withValue">withValue</a></li></ul>
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<div id="main">
<h1 class="page-title">model/ModelCollectionProperty.js</h1>
<section>
<article>
<pre class="prettyprint source linenums"><code>import Api from '../api/Api'
import ModelCollection from './ModelCollection'
/**
* A ModelCollectionProperty instance is a ModelCollection that is a property of
* a model instance. ModelCollectionProperties can be operated on independently of
* the Model that owns them.
*
* @memberof module:model
*/
class ModelCollectionProperty extends ModelCollection {
/**
* @constructor
*
* @param {Model} parentModel The `Model` of the parent of this `ModelCollectionProperty`
* @param {ModelDefinition} modelDefinition The `ModelDefinition` that this `ModelCollection` property is for
* @param {String} propName The name of this property on the parent model
* @param {Model[]|boolean} values Initial values that should be added to the collection property
* @param {Api} api The class to use for API calls
*
* @description
*
* Creates a new `ModelCollectionProperty` object. This is a subclass of `ModelCollection`, which adds logic
* for adding and removing elements to the collection and saving the changes to the API.
*
* If the value is `true` or `undefined` is specified instead of an array of data values, this indicates that the
* collection contains (or may contain) data that has not yet been loaded from the API.
*/
constructor(parentModel, modelDefinition, propName, values, api) {
super(modelDefinition, values, undefined)
// The name of this property on the parent object - necessary for loading values lazily
this.propName = propName
// Dirty bit - true if any models have been added to or removed from the collection
this.dirty = false
// Keep track of added and removed elements
this.added = new Set()
this.removed = new Set()
// Using field transformers, it's possible to query the API for the presence of data without actually fetching
// the data. For instance this is used to determine if an organization unit has any children without actually
// loading the children. If yes, it will be displayed as an expandable branch within the tree.
// For more information, see the documentation about field transformers, specifically the isNotEmpty operator:
// https://docs.dhis2.org/master/en/developer/html/dhis2_developer_manual_full.html#webapi_field_transformers
this.hasUnloadedData = values === true || values === undefined
this.api = api
// Store the parent model of this collection so we can construct the URI for API calls
this.parentModel = parentModel
}
/**
* @param {Model} value Model instance to add to the collection.
* @returns {ModelCollectionProperty} Returns itself for chaining purposes.
*
* @description
* Calls the `add` method on the parent `ModelCollection` class, and then performs checks to keep track of
* what, if any, changes that have been made to the collection.
*/
add(value) {
if (this.valuesContainerMap.has(value.id)) {
return this
}
super.add(value)
if (this.removed.has(value.id)) {
this.removed.delete(value.id)
} else {
this.added.add(value.id)
}
this.updateDirty()
return this
}
/**
* If the collection contains an object with the same id as the `value` parameter, that object is removed
* from the collection. Checks are then performed to keep track of what, if any, changes that have been
* made to the collection.
*
* @param {Model} value Model instance to remove from the collection.
* @returns {ModelCollectionProperty} Returns itself for chaining purposes.
*/
remove(value) {
ModelCollection.throwIfContainsOtherThanModelObjects([value])
ModelCollection.throwIfContainsModelWithoutUid([value])
if (this.delete(value.id)) {
if (this.added.has(value.id)) {
this.added.delete(value.id)
} else {
this.removed.add(value.id)
}
}
this.updateDirty()
return this
}
/**
* Checks whether any changes have been made to the collection, and updates the dirty flag accordingly.
*
* @returns {boolean} True if the collection has changed, false otherwise.
*/
updateDirty() {
this.dirty = this.added.size > 0 || this.removed.size > 0
return this.dirty
}
/**
* Sets dirty=false and resets the added and removed sets used for dirty state tracking.
*/
resetDirtyState() {
this.dirty = false
this.added = new Set()
this.removed = new Set()
}
/**
* Checks if the collection property has been modified.
* @param {boolean} [includeValues=true] If true, also checks if any models in the collection
* has been edited by checking the dirty flag on each model.
* @returns {boolean} true if any elements have been added to or removed from the collection
*/
isDirty(includeValues = true) {
if (includeValues) {
return (
this.dirty ||
this.toArray().filter(
model => model && model.isDirty() === true
).length > 0
)
}
return this.dirty
}
/**
* If any changes have been made to the collection, these changes will be submitted to the API. The returned
* promise will resolve successfully when the changes have been saved to the API, and will be rejected if
* either the changes weren't saved or if there were no changes to save.
*
* @returns {Promise} A `Promise`
*/
save() {
// Calling save when there's nothing to be saved is a no-op (not an error)
if (!this.isDirty()) {
return Promise.resolve({})
}
const url = [this.parentModel.href, this.modelDefinition.plural].join(
'/'
)
const data = {
additions: Array.from(this.added).map(id => ({ id })),
deletions: Array.from(this.removed).map(id => ({ id })),
}
return this.api
.post(url, data)
.then(() => {
this.resetDirtyState()
return Promise.resolve({})
})
.catch(err => Promise.reject('Failed to alter collection:', err))
}
load(options, forceReload = false) {
if (!this.hasUnloadedData && !forceReload) {
return Promise.resolve(this)
}
const url = [
this.parentModel.modelDefinition.apiEndpoint,
this.parentModel.id,
].join('/')
const requestOptions = Object.assign(
{
paging: false,
},
options,
{
fields: `${this.propName}[${
(options && options.fields) || ':all'
}]`,
}
)
return this.api
.get(url, requestOptions)
.then(data => data[this.propName])
.then(values => {
if (Array.isArray(values)) {
this.valuesContainerMap.clear()
values.forEach(value =>
this.valuesContainerMap.set(
value.id,
this.modelDefinition.create(value)
)
)
}
this.hasUnloadedData = false
return Promise.resolve(this)
})
}
/**
* See `ModelCollectionProperty.constructor`.
*
* @param {Model} parentModel
* @param {ModelDefinition} modelDefinition
* @param {Model[]} values
* @returns {ModelCollectionProperty}
*/
static create(parentModel, modelDefinition, propName, values) {
return new ModelCollectionProperty(
parentModel,
modelDefinition,
propName,
values,
Api.getApi()
)
}
}
export default ModelCollectionProperty
</code></pre>
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