/**************************************************************************************
* Function Name : PostEditEdit
* Description : Receive the modified parameters from the page, and update the individual attributes of the article according to the id.
* Caution : Parameter : int? id -> the id of article
* Article article -> the attributes of the article
* Return : The json result of edit
**************************************************************************************/
public async Task <JsonResult> PostEdit(int id, [Bind("Id,Title,Author,Date,Content,AttachFile")] Article article)
{
if (id != article.Id)
{
return(Json(new { result = 0, msg = "article id error" }));
}
if (ModelState.IsValid)
{
try {
_context.Update(article);
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException) {
if (!ArticleExists(article.Id))
{
return(Json(new { result = 0, msg = "article not find" }));
}
else
{
return(Json(new { result = 0, msg = "unexcepted error" }));
}
}
return(Json(new { result = 1, msg = "" }));
}
var errorValue = ModelState.Where(a => a.Value.Errors.Count > 0).First();
return(Json(new { result = 0, msg = "Input: " + errorValue.Key + " is not valid" }));
}