public async Task UpdateCourseAsync(CourseDto courseDto)
{
Course courseEntity = await this._dbContext.FindAsync <Course>(courseDto.Id);
//Tags
IList <RelCourseTag> relTagEntities = await _dbContext.RelCourseTags
.Where(x => x.IdCourse == courseEntity.Id).ToListAsync();
relTagEntities = relTagEntities.GroupBy(x => x.IdTag).Select(x => x.First()).ToList();
IDictionary <int, int> relIdByTagId = relTagEntities.ToDictionary(x => x.IdTag, x => x.Id);
IList <RelCourseTagDto> relCourseTagDtos = new List <RelCourseTagDto>();
IList <TagDto> tagDtos = courseDto.Tags.GroupBy(x => x.Id).Select(x => x.First()).ToList();
foreach (TagDto tagDto in tagDtos)
{
RelCourseTagDto relCourseTag = new RelCourseTagDto();
relCourseTag.IdTag = tagDto.Id;
relCourseTag.IdCourse = courseDto.Id;
if (relIdByTagId.ContainsKey(tagDto.Id))
{
relCourseTag.Id = relIdByTagId[tagDto.Id];
}
relCourseTagDtos.Add(relCourseTag);
}
_dbContext.UpdateRelation(relCourseTagDtos, relTagEntities, CopyDataRelCourse);
CopyDataCourse(courseDto, courseEntity);
await _dbContext.SaveChangesAsync();
}
private void CopyDataRelCourse(RelCourseTagDto dto, RelCourseTag entity)
{
RelCourseTagDto dtoSource = dto;
RelCourseTag entityDestination = entity;
entityDestination.IdCourse = dtoSource.IdCourse;
entityDestination.IdTag = dtoSource.IdTag;
}
protected virtual void CopyData(object dto, CranEntity entity)
{
if (dto is QuestionOptionDto && entity is QuestionOption)
{
QuestionOptionDto dtoSource = (QuestionOptionDto)dto;
QuestionOption entityDestination = (QuestionOption)entity;
entityDestination.IsTrue = dtoSource.IsTrue;
entityDestination.Text = dtoSource.Text ?? string.Empty;
entityDestination.IdQuestion = dtoSource.IdQuestion;
}
else if (dto is QuestionDto && entity is Question)
{
QuestionDto dtoSource = (QuestionDto )dto;
Question entityDestination = (Question)entity;
entityDestination.Title = dtoSource.Title;
entityDestination.Text = dtoSource.Text ?? string.Empty;
entityDestination.Explanation = dtoSource.Explanation;
entityDestination.QuestionType = dtoSource.QuestionType;
entityDestination.Language = Enum.Parse <Language>(dtoSource.Language);
}
else if (dto is RelQuestionTagDto && entity is RelQuestionTag)
{
RelQuestionTagDto dtoSource = (RelQuestionTagDto)dto;
RelQuestionTag entityDestination = (RelQuestionTag)entity;
entityDestination.IdQuestion = dtoSource.IdQuestion;
entityDestination.IdTag = dtoSource.IdTag;
}
else if (dto is RelQuestionImageDto && entity is RelQuestionImage)
{
RelQuestionImageDto dtoSource = (RelQuestionImageDto)dto;
RelQuestionImage entityDestination = (RelQuestionImage)entity;
entityDestination.IdQuestion = dtoSource.IdQuestion;
entityDestination.IdImage = dtoSource.IdImage;
}
else if (dto is ImageDto && entity is Image)
{
ImageDto dtoSource = (ImageDto)dto;
Image entityDestination = (Image)entity;
entityDestination.Width = dtoSource.Width;
entityDestination.Height = dtoSource.Height;
entityDestination.Full = dtoSource.Full;
}
else if (dto is CourseDto && entity is Course)
{
CourseDto dtoSource = (CourseDto)dto;
Course entityDestination = (Course)entity;
entityDestination.Title = dtoSource.Title;
entityDestination.Language = Enum.Parse <Language>(dtoSource.Language);
entityDestination.NumQuestionsToAsk = dtoSource.NumQuestionsToAsk;
entityDestination.Description = dtoSource.Description;
}
else if (dto is RelCourseTagDto && entity is RelCourseTag)
{
RelCourseTagDto dtoSource = (RelCourseTagDto)dto;
RelCourseTag entityDestination = (RelCourseTag)entity;
entityDestination.IdCourse = dtoSource.IdCourse;
entityDestination.IdTag = dtoSource.IdTag;
}
else
{
throw new NotImplementedException();
}
}
