/// <summary>
/// 保存章节
/// </summary>
/// <returns></returns>
public bool Save()
{
ThrowExceptionIfValidateFailure();
Data.Entity.Chapter chapter = new Data.Entity.Chapter
{
ChapterId = ID,
Content = Content,
Count = Count,
CourseId = CourseId,
CreateTime = DateTime.Now,
ParentId = ParentId,
ParentPath = ChapterTools.CreateParentPath(ParentChapter, ID),
Status = Status,
Title = Title,
Video = Video,
IsLeaf = true
};
bool success = ChapterAccessor.Insert(chapter);
if (success)
{
ComputeStudyProgress(CourseId);
}
return(success);
}
/// <summary>
/// 修改章节信息
/// </summary>
/// <param name="state">编辑后的数据状态</param>
/// <returns></returns>
public bool Modify(ChapterModifyState state)
{
if (state == null)
{
return(false);
}
Data.Entity.Chapter parent = null;
if (state.ParentId > 0)
{
parent = ChapterAccessor.Get(state.ParentId);
}
ThrowExceptionIfValidateFailure(() =>
{
if (CanModify())
{
//所属课程
if (!CourseAccessor.Exists(state.CourseId))
{
AddBrokenRule(ChapterManageFailureRule.COURSE_NOT_EXISTS);
}
//有关联父章节时,父章节不存在
if (state.ParentId > 0 && parent == null)
{
AddBrokenRule(ChapterManageFailureRule.PAREND_NOT_EXISTS);
}
//标题不能为空
if (string.IsNullOrWhiteSpace(state.Title))
{
AddBrokenRule(ChapterManageFailureRule.TITLE_CANNOT_EMPTY);
}
//内容不能为空
if (string.IsNullOrWhiteSpace(state.Content))
{
AddBrokenRule(ChapterManageFailureRule.CONTENT_CANNOT_EMPTY);
}
}
else
{
AddBrokenRule(ChapterManageFailureRule.CANNOT_MODIFY);
}
});
bool success = ChapterAccessor.Update(
ID,
state.CourseId,
state.ParentId,
ChapterTools.CreateParentPath(parent, ID),
state.Title,
state.Content,
state.Video,
state.Status);
if (success && (Chapter.CourseId != state.CourseId || Chapter.Status != state.Status))
{
ComputeStudyProgress(state.CourseId);
}
return(success);
}