MVC 5 ViewModel，具有可枚举属性的EditorTemplate

我正在努力找到完成以下操作的最佳正确方法：

我有一个名为CharacterViewModel的角色编辑器的ViewModel。此CharacterViewModel填充了一个Character对象，该对象是一个角色可以拥有的可用能力分数列表，位于另一个表中。

我为下拉列表创建了一个编辑模板，我正试图找到一种方法来恢复编辑后的能力列表。我似乎无法将它们重新连接到控制器上。

以下是ViewModel代码：

    public class CharacterViewModel : DbContext
    {
            public Character Character { get; set; }
            [UIHint("CharacterAbilityScores")]
            public IEnumerable<CharacterAbilityScore> CharacterAbilityScores { get; set; }
            public IEnumerable<SelectListItem> AbilityScoresSelectList { get; set; }
            public IEnumerable<AbilityModifiersAndBonusSpellDTO> AbilityModifiersAndBonusSpellDTO { get; set; }
            public CharacterViewModel()
                : base("name=CharacterModels")
            {
            }
    }

以下是用于填充ViewModel:的控制器代码

    public async Task<ActionResult> Edit(int? id)
    {
        Character character = db.Characters.Find(id);
        var model = new CharacterViewModel();
        model.Character = character;
        model.CharacterAbilityScores = character.CharacterAbilityScores;
        // Creating the list of ability scores for the view            
        model.AbilityScoresSelectList = from amabs in db.AbilityModifiersAndBonusSpells
                                        select new SelectListItem()
                                        {
                                            Value = amabs.score.ToString(),
                                            Text = amabs.score.ToString()
                                        };
        return View(model);
    }

控制器中的编辑方法签名（CharacterAbilityScores属性和其他复杂属性在回程时始终为空）：

    public async Task<ActionResult> Edit(CharacterViewModel characterViewModel)

以下是编辑视图中的相关代码：

    @model CampaignManager.Models.CharacterViewModel
    @using (Html.BeginForm())
    {
            <div class="form-group">
                    @Html.EditorFor(model => model.CharacterAbilityScores, new { AbilityScoresSelectList = Model.AbilityScoresSelectList })
            </div>
    }

最后，编辑器模板：

    @model IEnumerable<CampaignManager.Entities.CharacterAbilityScore>
    <table>
    @foreach (var abilityScore in Model)
    {
            <tr>
                    <td>@abilityScore.Ability.Abbreviation</td>
                    <td>
                            @{
                            if (ViewData["AbilityScoresSelectList"] != null)
                            {
                                    @Html.HiddenFor(z => abilityScore);
                                    @Html.HiddenFor(z => abilityScore.AbilityId);
                                    @Html.DropDownListFor(x => abilityScore.AbilityId, (IEnumerable<SelectListItem>)ViewData["AbilityScoresSelectList"], dropDownHTMLOptions);
                            }
                    }
                    </td>
            <tr>
    }
    </table>

我尝试了许多不同的HiddeFor技巧，存储整个集合，存储不同的id。。。我承认我有点迷路了。也许我做错了，我需要另一种方法？

更新

以下是CharacterAbilityCore实体的模型：

public partial class CharacterAbilityScore
{
    [Key]
    [Column(Order = 0)]
    [DatabaseGenerated(DatabaseGeneratedOption.None)]
    public int CharacterId { get; set; }
    [Key]
    [Column(Order = 1)]
    [DatabaseGenerated(DatabaseGeneratedOption.None)]
    public int AbilityId { get; set; }
    public int AbilityScore { get; set; }
    public virtual Ability Ability { get; set; }
    public virtual AbilityModifiersAndBonusSpell AbilityModifiersAndBonusSpell { get; set; }
    public virtual Character Character { get; set; }
}

@model CampaignManager.Entities.CharacterAbilityScore
<tr>
  <td>@Html.DisplatFor(m => m.Ability.Abbreviation)</td>
  <td>@Html.DropDownListFor(m => m.AbilityId, (IEnumerable<SelectListItem>)ViewData["AbilityScoresSelectList"])</td>
</tr>

@model CampaignManager.Models.CharacterViewModel
@using (Html.BeginForm())
{
  <table>
    @Html.EditorFor(model => model.CharacterAbilityScores, new { AbilityScoresSelectList = Model.AbilityScoresSelectList })
  </table>
}