要从控制器中的模型访问数据吗？

Question

我有一个用于显示最新文章列表的模型，并且我希望能够定义显示多少文章。我已经创建了一个名为DisplayNumberOfPressArticles的属性，我希望能够从我的控制器访问此属性的值。

这里是模型：

using Site.Helpers.Selections;
using Site.Models.Blocks.Data;
using EPiServer.DataAnnotations;
using EPiServer.Shell.ObjectEditing;
using System.ComponentModel.DataAnnotations;

namespace Site.Models.Blocks
{
    [SiteContentType(GUID = "884202C2-61F1-4DF5-85A7-DC3D4E493F59")]
    [SiteImageUrl]
    public class LastArticlesTeaserBlock : SiteBlockData, PressOverviewData, ISpaceableData
    {
        [CultureSpecific]
        public virtual string Heading { get; set; }

        [Range(1, 1000)]
        public virtual int DisplayNumberOfPressArticles { get; set; }

    }
}

在我的控制器中，我想将DisplayNumberOfPressArticles的值作为.Take（）查询的限制：

using System;
using System.Collections.Generic;
using Site.Models.Blocks;
using EPiServer.Web.Mvc;
using System.Web.Mvc;
using Site.Models.Pages;
using Site.Models.ViewModels;
using EPiServer.Find;
using EPiServer.Find.Api;
using EPiServer.Find.Cms;
using EPiServer.Find.Framework;
using EPiServer.Logging;
using ILogger = EPiServer.Logging.ILogger;
using EPiServer.Globalization;

namespace Site.Controllers
{
    public class LastArticlesTeaserBlockController : BlockController<LastArticlesTeaserBlock>
    {
        private static readonly ILogger Logger = LogManager.GetLogger();
        public override ActionResult Index(LastArticlesTeaserBlock currentContent)
        {
            var model = new LastArticlesTeaserViewModel
            {
                Headline = currentContent.Heading,
                ArticlePages = GetArticlePages(),
                PaddingTop = currentContent.PaddingTop,
                PaddingBottom = currentContent.PaddingBottom
            };

            return PartialView(model);
        }

        private List<PressDetailsPage> GetArticlePages()
        {
            List<PressDetailsPage> result = new List<PressDetailsPage>();

            IClient findClient = SearchClient.Instance;
            var search = findClient.Search<PressDetailsPage>();

            search = search
                .Filter(sp => sp.IsDeleted.Match(false)).PublishedInCurrentLanguage()
                .Filter(sp => sp.Headline.Exists() | sp.Description.Exists())
                .Filter(sp => sp.Language.Name.Match(ContentLanguage.PreferredCulture.Name))
                .OrderByDescending(sp => sp.PublishDate, SortMissing.Last)
                .Take(??);

            try
            {
                var searchResult = search.GetContentResult();

                result.AddRange(searchResult);
            }
            catch (NullReferenceException e)
            {
                Logger.Error(e.ToString());
            }

            return result;

        }
    }
}

对不起，对于新手问题，但是到目前为止，我尝试过的所有方法都没有用。我以为可以使用.Take(LastArticlesTeaserBlock.DisplayNumberOfPressArticles);

访问模型

Answer 1

您的SearchClient类看起来像custom实现，很难分辨出该错误是否存在。

选项1：像-db.ArticleSet.OrderByDescending(t => t.Articles.Count).Take(10);

---

选项2：或更直接的查询。

使生活更轻松，并将其分解为两个部分触发查询，执行查询，然后根据需要将其放回原处。

步骤1

var articlesQuery = from x in Articles..
                  where x.IsDeleted == true ....
步骤2

var limitedArticlesQuery  = articlesQuery.Take(25);
从客户端大小发送int pageSize

var pagedProductQuery = articlesQuery.Skip(10 * pageSize).Take(10)

Answer 2

如何将您的签名更改为GetArticlePages(int maxCount)之类的东西，然后在ArticlePages = GetArticlePages(currentContent.DisplayNumberOfPressArticles)方法中像Index那样调用它？