/// <summary>
/// Links a news item to author by their ids
/// </summary>
/// <param name="authorId">id of author to link to news item</param>
/// <param name="newsItemId">id of news item to link to author</param>
public void LinkNewsItemToAuthor(int authorId, int newsItemId)
{
// Check if author and news item exist by id
GetAuthorById(authorId);
_newsItemService.GetNewsItemById(newsItemId);
// if no resource not found exception is thrown, add relation if it doesn't already exist
var newRelation = new AuthorNewsItemRelation {
AuthorId = authorId, NewsItemId = newsItemId
};
if (getNewsItems(authorId).Where(x => x.AuthorId == authorId && x.NewsItemId == newsItemId).Count() == 0)
{
_newsItemRelationRepository.AddRelation(newRelation);
}
}
/// <summary> /// Deletes relation from relational list /// </summary> /// <param name="relation">the relation to delete</param> public void AddRelation(AuthorNewsItemRelation relation) => _relationalDataProvider.GetAuthorNewsItemRelations().Add(relation);
/// <summary> /// Deletes relation from relational list /// </summary> /// <param name="relation">the relation to delete</param> public void DeleteRelation(AuthorNewsItemRelation relation) => _relationalDataProvider.GetAuthorNewsItemRelations().Remove(relation);
