public async Task <IActionResult> AddCandidate([FromBody] CandidateElectionRelation mydata)
{
//this method is called using ajax calls
//it is used when editing/creating an election
//it takes {voterId, electionId} and create new candidate from it and add it to db ... used when creating/editing an old election
//so if a business rule is not met we'll throw a businessException and catch it to create and internal server error and return its msg
//as json
try
{
Candidate newCandidate = _candidateBusiness.AddNewCandidate(mydata.voterId, mydata.electionId);
//row updated successfully in the DB
//now lets return json data so that it is understandable by jQuery
var json = JsonConvert.SerializeObject(new
{
candidateId = newCandidate.Id
});
return(Ok(json));
}
catch (DataNotUpdatedException bnu)
{
//lets now create a suitable message for the user and store it inside a ViewBag (which is a Dynamic Object we can fill it
//by whatever we want
BusinessMessage bm = new BusinessMessage("Error", bnu.Message);
ViewBag.BusinessMessage = bm;
return(View());
}
catch (BusinessException be)
{
//lets create an internal server error so that the response returned is an ERROR, and jQuery ajax will understand that.
HttpContext.Response.StatusCode = 500;
return(Json(new { Message = be.Message }));
}
catch (Exception E)
{
//lets create and return an internal server error so that the response returned is an ERROR, and jQuery ajax will understand that.
HttpContext.Response.StatusCode = 500;
return(Json(new { Message = E.Message }));
}
}
public async Task <IActionResult> RemoveCandidateByElectionAndVoter([FromBody] CandidateElectionRelation mydata)
{
//this method is called using ajax calls
//so if a business rule is not met we'll throw a businessException and catch it to create and internal server error and return its msg
//as json
//this function removes a candidate from the db using its electionID and its voterBeing ID
//.. used when creating an election
try
{
_candidateBusiness.RemoveCandidateByElectionIdAndVoterId(mydata.electionId, mydata.voterId);
//row updated successfully in the DB
return(Json(new { success = true }));
}
catch (DataNotUpdatedException bnu)
{
//lets now create a suitable message for the user and store it inside a ViewBag (which is a Dynamic Object we can fill it
//by whatever we want
BusinessMessage bm = new BusinessMessage("Error", bnu.Message);
ViewBag.BusinessMessage = bm;
return(View());
}
catch (BusinessException be)
{
//lets create an internal server error so that the response returned is an ERROR, and jQuery ajax will understand that.
HttpContext.Response.StatusCode = 500;
return(Json(new { Message = be.Message }));
}
catch (Exception E)
{
//lets create and return an internal server error so that the response returned is an ERROR, and jQuery ajax will understand that.
HttpContext.Response.StatusCode = 500;
return(Json(new { Message = E.Message }));
}
}
