angular-ui/ui-grid

Custom sortingAlgorithm with large data set and virtualization

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#4,399 建立於 2015年9月18日

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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?

貢獻者指南

技術棧
javascriptangular
領域
frontend
議題類型
bug
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-2 days
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
mostly clear
前置要求
Basic understanding of AngularJSFamiliarity with ui gridJavaScript date manipulation
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
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.
Custom sortingAlgorithm with large data set and virtualization · angular-ui/ui-grid#4399 | Good First Issue