EXTJS7 treestore 获取所有记录

treestore如果从根节点遍历树获取所有记录太麻烦

版本

7.x

解决

使用treestore.byIdMap即可获取根据记录ID映射的所有记录

源码分析

modern/src/TreeStore.js

Ext.define('Ext.data.TreeStore', {
	registerNode: function(node, includeChildren) {
        var me = this,
            was = me.byIdMap[node.id],
            children, length, i;
 
        // Key the node hash by the node's IDs
        me.byIdMap[node.id] = node;
 
        // If the node requires to be informed upon register, and is not already
        // registered, keep it informed.
        if (node.onRegisterTreeNode && node !== was) {
            node.onRegisterTreeNode(me);
        }
 
        // Keep a count of nodes which require to be informed upon unregister.
        // If we are destroyed, or change root nodes, a cascade will be
        // necessary if this is non-zero.
        if (node.onUnregisterTreeNode) {
            me.nodesToUnregister++;
        }
 
        if (includeChildren === true) {
            children = node.childNodes;
            length = children.length;
 
            for (i = 0; i < length; i++) {
                me.registerNode(children[i], true);
            }
        }
    },
});