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<title>[8709] sites/trunk/wordcamp.org/public_html/wp-content/mu-plugins/blocks/assets/src/blocks-store.js: WordCamp Blocks: Add a data store for handling fetched data</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="http://meta.trac.wordpress.org/changeset/8709">8709</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"http://meta.trac.wordpress.org/changeset/8709","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>coreymckrill</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2019-05-01 21:58:20 +0000 (Wed, 01 May 2019)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>WordCamp Blocks: Add a data store for handling fetched data
Using this will be much more efficient than having each block fetch and
cache its own data separately.
Props vedjain</pre>
<h3>Added Paths</h3>
<ul>
<li><a href="#sitestrunkwordcamporgpublic_htmlwpcontentmupluginsblocksassetssrcblocksstorejs">sites/trunk/wordcamp.org/public_html/wp-content/mu-plugins/blocks/assets/src/blocks-store.js</a></li>
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<h3>Diff</h3>
<a id="sitestrunkwordcamporgpublic_htmlwpcontentmupluginsblocksassetssrcblocksstorejs"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: sites/trunk/wordcamp.org/public_html/wp-content/mu-plugins/blocks/assets/src/blocks-store.js</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- sites/trunk/wordcamp.org/public_html/wp-content/mu-plugins/blocks/assets/src/blocks-store.js (rev 0)
+++ sites/trunk/wordcamp.org/public_html/wp-content/mu-plugins/blocks/assets/src/blocks-store.js 2019-05-01 21:58:20 UTC (rev 8709)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,190 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+/**
+ * External dependencies
+ */
+import { intersection, orderBy, split } from 'lodash';
+
+/**
+ * WordPress dependencies
+ */
+const { registerStore, select, dispatch } = wp.data;
+const apiFetch = wp.apiFetch;
+
+/**
+ * Define store name.
+ */
+export const WC_BLOCKS_STORE = 'wordcamp';
+
+const DEFAULT_STATE = {};
+
+/**
+ * Filter or sort an array of entities retrieved from the store.
+ *
+ * Note: Don't use the output for this in a prop because it could cause performance issues
+ * since the reference of the returned object will always be different.
+ * See https://reactjs.org/docs/optimizing-performance.html#avoid-reconciliation
+ *
+ * TODO: Can this be memoized?
+ *
+ * @param {Array} entities List of entities to filter or sort.
+ * @param {Object} args Arguments for the filter. {
+ * @type {Array} filter Array of objects, each of which as a fieldName and fieldValue property.
+ * @type {string} sort One string with two values, separated by `_`. The first value is the field to sort by.
+ * The second value is the direction of the sort, either `asc` or `desc`.
+ * }
+ *
+ * @return {Array} The filtered entities.
+ */
+export const filterEntities = ( entities, args ) => {
+ const { isArray } = Array;
+
+ if ( ! isArray( entities ) ) {
+ return entities;
+ }
+
+ let result = [ ...entities ];
+
+ if ( args.hasOwnProperty( 'filter' ) && isArray( args.filter ) ) {
+ args.filter.forEach( ( filterParams ) => {
+ let { fieldName, fieldValue } = filterParams;
+
+ if ( ! isArray( fieldValue ) ) {
+ fieldValue = [ fieldValue ];
+ }
+
+ result = result.filter( ( entity ) => {
+ if ( ! entity.hasOwnProperty( fieldName ) ) {
+ return false;
+ }
+
+ const compareValue = isArray( entity[ fieldName ] ) ? entity[ fieldName ] : [ entity[ fieldName ] ];
+
+ return intersection( fieldValue, compareValue ).length > 0;
+ } );
+ } );
+ }
+
+ if ( args.hasOwnProperty( 'sort' ) ) {
+ let [ orderby, order ] = split( args.sort, '_', 2 );
+
+ // TODO: Figure out a way to move this out of data store.
+ if ( 'title' === orderby && result.length && result[ 0 ].title.hasOwnProperty( 'rendered' ) ) {
+ orderby = 'title.rendered';
+ }
+
+ result = orderBy( result, [ orderby ], [ order ] );
+ }
+
+ return result;
+};
+
+/**
+ * Defines actions provided by this store.
+ */
+const actions = {
+ /**
+ * Queues api fetch for settings.
+ *
+ * @return {{type: string}}
+ */
+ fetchSiteSettings() {
+ return {
+ type: 'FETCH_SETTINGS',
+ };
+ },
+
+ /**
+ * Set the site settings object in this store.
+ *
+ * @param { Object } settings
+
+ * @return { Object }
+ */
+ setSiteSettings( settings ) {
+ return {
+ type : 'SET_SETTINGS',
+ settings : settings,
+ };
+ },
+};
+
+/**
+ * Defines selectors provided by this store.
+ *
+ * @type {{getPosts(*, *)}}
+ */
+const selectors = {
+ /**
+ * Get query results from the Core data store.
+ *
+ * Returns data from current state. Caches [state, entityType] for
+ * quick resolution.
+ *
+ * @param {Object} state Current store state
+ * @param {string} entityType Type of the entity to fetch
+ * @param {string} entityName Type of the entity to fetch
+ * @param {Object} queryArgs Optional. Additional arguments for the fetch query.
+ *
+ * @return {Array} The results of the query.
+ */
+ getEntities( state, entityType, entityName, queryArgs = {} ) {
+ const defaultArgs = {
+ per_page: -1, // The data store has middleware that converts this to paginated requests of 100 items each.
+ };
+
+ const mergedArgs = { ...defaultArgs, ...queryArgs };
+
+ return select( 'core' ).getEntityRecords( entityType, entityName, mergedArgs );
+ },
+
+ /**
+ * Get a site's settings via the REST API.
+ *
+ * @param {Object} state
+ *
+ * @return {Object.settings|null}
+ */
+ getSiteSettings( state ) {
+ if ( ! state.hasOwnProperty( 'siteSettings' ) ) {
+ dispatch( WC_BLOCKS_STORE ).fetchSiteSettings();
+
+ return null;
+ }
+
+ return state.siteSettings;
+ },
+};
+
+/**
+ * Decide how to change the store's state based on the given action.
+ *
+ * @param {Object} state
+ * @param {Object} action
+ *
+ * @return {{state}}
+ */
+const reducer = ( state = DEFAULT_STATE, action ) => {
+ switch ( action.type ) {
+ case 'FETCH_SETTINGS':
+ if ( state.loadingSettings ) {
+ break;
+ }
+
+ apiFetch( { path: '/wp/v2/settings' } ).then(
+ ( fetchedSettings ) => {
+ dispatch( WC_BLOCKS_STORE ).setSiteSettings( fetchedSettings );
+ }
+ );
+
+ state.loadingSettings = true;
+ break;
+
+ case 'SET_SETTINGS':
+ state.siteSettings = action.settings;
+ state.loadingSettings = false;
+ break;
+ }
+
+ return state;
+};
+
+registerStore( WC_BLOCKS_STORE, { selectors, actions, reducer } );
</ins></span></pre>
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