angular-ui/ui-grid

Custom sortingAlgorithm with large data set and virtualization

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#4,399 创建于 2015年9月18日

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 (1 评论) (0 反应) (0 负责人)JavaScript (5,395 star) (2,496 fork)batch import
help wantedseverity: performancetype: FAQ

描述

I have a date column that is stored as a string in the JSON. In order to sort this, I'm using a custom sortingAlgorithm on the column with the following definition:

{
    displayName: 'Date Approved',
    field: 'dateApproved',
    sortingAlgorithm: function (aDate, bDate) {
        var a = moment(aDate);
        var b = moment(bDate);
        if (a < b) {
            return -1;
        }
        else if (a > b) {
             return 1;
        }
        else {
            return 0;
        }
    }
}

This seems to work great for the first chunk of data, but once I get beyond maybe 60 rows or so, it falls apart and the sorting becomes random. For this particular grid, I have about 600 rows, with a filter applied that shows about 100. Is this a known issue?

贡献者指南

技术栈
javascriptangular
领域
frontend
议题类型
bug
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
1-2 days
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
mostly clear
前置要求
Basic understanding of AngularJSFamiliarity with ui gridJavaScript date manipulation
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
25
研究方向
Investigate ui grid's sorting and virtualization logic in the source code, specifically how the custom sortingAlgorithm interacts with the virtual scroll. The issue (~2015) may have been resolved in later versions; check the changelog and closed issues for related fixes. Look for any PRs or maintainer comments addressing sorting with large datasets. Also consider whether the issue stems from the sorting function itself or from data handling by the grid.