2 2sxc \ SQL Datasource - LINQ筛选查询

Question

我有一个sure设置，可以从标准的DNN 'Files‘表中获取所有具有特定扩展名的文档，但是我想添加一个额外级别的规范，说明要显示的文件类别，但不确定如何最好地实现它。请参见下面的代码：

@using ToSic.Eav.DataSources
@functions
{
    // Default data initialization - should be the place to write data-retrieval code
    // In the future when routing & pipelines are fully implemented, this will usually be an external configuration-only system
    // For now, it's done in a normal event, which is automatically called by the razor host in 2SexyContent
    public override void CustomizeData()
    {
        var source = CreateSource<SqlDataSource>();
        // source.TitleField = "EntityTitle"; // not necessary, default
        // source.EntityIdField = "EntityId"; // not necessary, default
        // source.ConnectionString = "...";   // not necessary, we're using the ConnectionStringName on the next line
        source.ConnectionStringName = Content.ConnectionName;

    // Special note: I'm not selecting * from the DB, because I'm activating JSON and want to be sure that no secret data goes out
    source.SelectCommand = "Select Top 10 FileId as EntityId, FileName as EntityTitle, PublishedVersion, UniqueId, FileName, Size as Size, Extension as Extension, CreatedOnDate as Date, Folder as Folder FROM Files WHERE PortalId = @PortalId AND Extension = 'docx' OR Extension = 'xlsx' OR Extension = 'pdf'";
    source.Configuration.Add("@PortalId", Dnn.Portal.PortalId.ToString());
    Data.In.Add("FileList", source.Out["Default"]);

    // enable publishing
    Data.Publish.Enabled = true;
    Data.Publish.Streams = "Default,FileList";
    }
}

我希望将2 2sxc类别实体与DNN的Tab/Page分类法标记/类别同步，以便用户在页面设置中选择DNN标记，如果与2 2sxc类别实体同步，该标记将允许我将特定的doc/excel/pdf文件(已经通过2 2sxc连接到2 2sxc类别)分配到基于select的应用程序，该应用程序通过将taxonomy_terms表与内容项表连接起来，然后与与DNN选项卡表连接的内容项标记表连接。

如何更正下面的LINQ/Razor代码，以筛选我的类别，使其只显示指定给它们的确切“服务”类别的文件。我将使用此筛选器与分类法标签'Services‘(完全匹配)同步，我想将其链接到2 2sxc类别(它已经通过2 2sxc连接到已上载的Adam文件)和DNN分类法术语'Services'？

@foreach (var file in AsDynamic(Data.In["FileList"]).Where(i => 
        (i.Category as List<dynamic>).Any(c => c.EntityId == FileList.EntityId)))
        {
            <li>@file.FileName</li>
        }

我已经详细地查看了https://github.com/2sic/2sxc/wiki/DotNet-Query-Linq上的wiki注释，并且我一直在使用使用stuck模板的foreach来获得类别筛选器的正确语法。

干杯..。

Answer 1

是的，我需要的过滤器如下所示：

@using ToSic.SexyContent

    @{
    // all QandA items
    var all = AsDynamic(App.Data["QandA"].List);

    // the filter value, can be set in template
    // but usually you would either get it from url with Request["urlparam"]
    // or from a setting in the view, using Content.Category
    var currentCat = "Business";

    // filter, find any which have the current category
    var filtered = all

    .Where(p => (p.Categories as List<DynamicEntity>).Any(c => AsDynamic(c).Name == currentCat)); 

}

<div class="clearfix">
        @foreach (var q in filtered)
        {
            <div class="sc-element" data-tags="@String.Join(",", ((List<DynamicEntity>)q.Categories).Select(a => AsDynamic(a).EntityId))">

                @Edit.Toolbar(Content)

                <div class="col-md-12">
                    <div class="">
                        <a href="@q.Link" class="">
                            <span class="">@q.Link</span>
                        </a>
                        <p>@q.Title</p>
                    </div>
                </div>
            </div>
        }
</div>

再次感谢！

Answer 2

我相信我们已经用邮件解决了这个问题。

一个次要的建议是:如果您使用DnnSqlDataSource而不是SqlDataSource，那么您的当前DNN已经有了正确的连接字符串。也见http://2sxc.org/en/docs/Feature/feature/4670和https://github.com/2sic/2sxc/wiki/DotNet-DataSources-All