javascript ExtJS 4 Grid 自定义列排序（文件管理器风格）
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/12932007/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
ExtJS 4 Grid custom columns sorting (file manager style)
提问by VisioN
I was about to make a basic file manager using ExtJS 4. The problem I faced now is: how to make custom sorting for grid panelwhen clicking the columns.
我正准备使用ExtJS 4制作一个基本的文件管理器。我现在面临的问题是：如何在单击列时对网格面板进行自定义排序。
Imagine we have store fields:
想象一下我们有商店字段：
[
{ name: "is_dir", type: "boolean" },
{ name: "name", type: "string" },
{ name: "size", type: "int" }
]
And the data which comes from an array:
以及来自数组的数据：
[
{ is_dir: true, name: "..", size: 0 },
{ is_dir: false, name: "file2.txt", size: 512 },
{ is_dir: true, name: "folder2", size: 0 },
{ is_dir: false, name: "file3.txt", size: 1024 },
{ is_dir: true, name: "folder1", size: 0 },
{ is_dir: true, name: "file1.txt", size: 1024 },
// ...
]
The idea is to make sorting like in any file manager (e.g. Total Commander, MC, FAR, etc) so, that:
这个想法是在任何文件管理器（例如Total Commander、MC、FAR等）中进行排序，以便：
- the item with name ".." is always placed at the top
- dirs go after ".." (if exists) in sorted order
- files go after dirs (if exist) in sorted order
- 名称为“..”的项目始终位于顶部
- 目录按排序顺序在“..”（如果存在）之后
- 文件按排序顺序放在目录（如果存在）之后
For example, the output with sorting by name and by size should be:
例如，按名称和大小排序的输出应该是：
^ Name | Size Name | ^ Size
----------------------- -------------------------
.. | 0 .. | 0
folder1 | 0 folder1 | 0
folder2 | 0 folder2 | 0
file1.txt | 1024 file2.txt | 512
file2.txt | 512 file1.txt | 1024
file3.txt | 1024 file3.txt | 1024
I've tried to write custom sorterFnfor store sortersproperty, however it didn't help. I believe there should be some easy solution for that.
我尝试sorterFn为商店sorters属性编写自定义，但它没有帮助。我相信应该有一些简单的解决方案。
采纳答案by VisioN
I have forked @Alexey's answerwith short sorting algorithm. Additionally, I fixed the problem with double sorting (because of this.callParent(arguments);which runs the basic sorting from the parent method). Here is the solution that works perfectly for me:
我用短排序算法分叉了@Alexey的答案。此外，我解决了双重排序的问题（因为this.callParent(arguments);它从父方法运行基本排序）。这是对我来说完美的解决方案：
sort: function(sorters) {
sorters = sorters || { property: "name", direction: "ASC" };
var mod = sorters.direction.toUpperCase() === "DESC" ? -1 : 1;
this.sorters.clear(); // these lines are needed
this.sorters.add(sorters); // to update the column state
this.doSort(function(a, b) {
var a_type = a.get("is_dir"),
b_type = b.get("is_dir"),
a_name = a.get("name"),
b_name = b.get("name");
if (a_name === "..") return -1;
if (a_type === b_type) {
var a_prop = a.get(sorters.property),
b_prop = b.get(sorters.property);
if (a_prop === b_name) {
return (a_name < b_name ? -1 : 1) * mod;
} else {
return (a_prop < b_prop ? -1 : 1) * mod;
}
} else {
return b_type - a_type;
}
});
}
回答by Alexey Solonets
You can override the sortmethod of your store:
您可以覆盖sort商店的方法：
Ext.define('My.store.FileStore', {
extend: 'Ext.data.Store',
sort: function () {
this.doSort(function() {
// Custom sorting function
console.log(arguments);
return Math.random() > 0.5 ? 1 : -1; // :)
});
}
});
UPDATE
更新
Ext.define('FileModel', {
extend: 'Ext.data.Model',
fields: [
{ name: "is_dir", type: "boolean" },
{ name: "name", type: "string" },
{ name: "size", type: "int" }
]
});
Ext.define('FileStore', {
extend: 'Ext.data.Store',
model: 'FileModel',
data: [
{ is_dir: true, name: "..", size: 0 },
{ is_dir: false, name: "file2.txt", size: 512 },
{ is_dir: true, name: "folder2", size: 0 },
{ is_dir: false, name: "file3.txt", size: 1024 },
{ is_dir: true, name: "folder1", size: 0 },
{ is_dir: false, name: "file1.txt", size: 1024 },
],
sorters: [{
property: 'name',
direction: 'ASC'
}],
sort: function(params) {
var dir = params ? params.direction : 'ASC';
var prop = params ? params.property : 'name';
this.callParent(arguments); // UPDATE 2
this.doSort(function(rec1, rec2) {
var rec1sort = '';
var rec2sort = '';
if (rec1.get('is_dir') && rec2.get('is_dir')) {
// both dirs
if (rec1.get('name') == '..') {
return -1;
}
else if (rec2.get('name') == '..') {
return 1;
}
else {
return rec1.get('name').localeCompare(rec2.get('name')) * (dir == 'ASC' ? 1 : -1);;
}
}
else if (rec1.get('is_dir') != rec2.get('is_dir')) {
// file and dir
if (rec1.get('is_dir')) {
if (rec1.get('name') == '..') {
return -2;
}
else {
return -1;
}
}
else {
if (rec2.get('name') == '..') {
return 2;
}
else {
return 1;
}
}
}
else if (!rec1.get('is_dir') && !rec2.get('is_dir')) {
// both files
var result;
if (typeof rec1.get(prop) == 'number') {
result = rec1.get(prop) - rec2.get(prop);
if (result == 0) {
result = rec1.get('name').localeCompare(rec2.get('name'));
}
}
else {
result = rec1.get('name').localeCompare(rec2.get('name'));
}
return dir == 'ASC' ? result : result * -1;
}
});
}
});
var grid = Ext.create('Ext.grid.Panel', {
title: 'Files',
store: Ext.create('FileStore'),
renderTo: Ext.getBody(),
columns: [{
header: 'Name',
dataIndex: 'name'
}, {
header: 'Size',
dataIndex: 'size'
}]
});
回答by Bogdan M.
Sencha's Ext.Store contains now a new config object called
Sencha 的 Ext.Store 现在包含一个名为的新配置对象
E.g.:
例如：
Store config:
店铺配置：
groupField: 'type', // here you can setup a the attribute of the model to group them by
groupDir: 'DESC' // this is the direction
Model config:
模型配置：
{
name: 'createdByName',
sortType: 'asUCText',
},
Just by doing this and adding the sortType to the Models config, you are having now case insesnitive sorting on column name grouped by type
只需执行此操作并将 sortType 添加到 Models 配置中，您现在就可以对按类型分组的列名进行不区分大小写的排序
