Breeze 你需要15分钟。我建议您从这里开始，并与您的代码进行比较，看看有什么不同。很好，luckI成功了：我需要引用viewModel变量中的invoice.lines，如下所示：vm.invoice（）.lines.valueHasMutated（）。谢谢你抽出

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你需要15分钟。我建议您从这里开始，并与您的代码进行比较，看看有什么不同。很好，luckI成功了：我需要引用viewModel变量中的invoice.lines，如下所示：

vm.invoice（）.lines.valueHasMutated（）。谢谢你抽出时间。
var getInvoiceById = function (invoiceId, invoiceObservable, forceRemote) {
    // Input: invoiceId: the id of the invoice to retrieve
    // Input: forceRemote: boolean to force the fetch from server
    // Output: invoiceObservable: an observable filled with the invoice

    if (forceRemote)
        queryCacheInvoice = {};

    var query = entityQuery.from('Invoices')
        .where('id', '==', invoiceId)
        .expand("Client, Client.Contacts, Lines")
        .orderBy('Lines.Number');

    var isInCache = queryCacheInvoice[invoiceId];

    if (isInCache && !forceRemote) {
        query = query.using(breeze.FetchStrategy.FromLocalCache);
    } else {
        queryCacheInvoice[invoiceId] = true;
        query = query.using(breeze.FetchStrategy.FromServer);
    }

    return manager.executeQuery(query)
        .then(querySucceeded)
        .fail(queryFailed);

    function querySucceeded(data) {
        invoiceObservable(data.results[0]);
    }
};

public class Invoice
{
    [Key]
    public int Id { get; set; }
    public string Number { get; set; }
    public DateTime? Date { get; set; }
    public int? ClientId { get; set; }
    public string Comment { get; set; }
    public double? TotalExclVAT { get; set; }        
    public double? TotalInclVAT { get; set; }
    public double? TotalVAT { get; set; }
    public bool? WithoutVAT { get; set; }

    public virtual List<InvoiceLine> Lines { get; set; }
    public virtual Client Client { get; set; }
}

public class InvoiceLine
{
    [Key]
    public int Id { get; set; }
    [Required]
    public int Number { get; set; }
    [Required]
    public string Description { get; set; }
    public int InvoiceId { get; set; }

    public Invoice Invoice { get; set; }
}

<a href="#" data-bind="click: $parent.sortList">Sort</a>
var sortAscending = true;
var viewmodel = {
    ...
    sortList: sortList,
    ...
};
...
function sortList(list) {
    list.todos().sort(function(left, right) {
        return (sortAscending ? 1 : -1) *
            (left.title().toLowerCase() < right.title().toLowerCase() ? -1 : 1);
    });
    sortAscending = !sortAscending; // reverse sort direction
    list.todos.valueHasMutated();   // let KO know that we've sorted
}