private void VaildateModelBinding(object entity, GraphQLValidator validator)
{
Type argType = entity.GetType();
foreach (var prop in argType.GetProperties())
{
object value = prop.GetValue(entity, null);
// set default message in-case user didn't provide a custom one
string error = $"{prop.Name} is required";
if (validator.Errors.Any(x => x.Message == error))
{
return;
}
if (prop.GetCustomAttribute(typeof(System.ComponentModel.DataAnnotations.RequiredAttribute)) is System.ComponentModel.DataAnnotations.RequiredAttribute attr)
{
if (attr.ErrorMessage != null)
{
error = attr.ErrorMessage;
}
if (value == null)
{
validator.AddError(error);
}
else if (!attr.AllowEmptyStrings && prop.PropertyType == typeof(string) && ((string)value).Length == 0)
{
validator.AddError(error);
}
}
}
}
public Expression <Func <CampaignSaberContext, Campaign> > DeleteCampaign(CampaignSaberContext db, CampaignDeletionArgs args, GraphQLValidator validator, IHttpContextAccessor accessor)
{
var user = accessor.HttpContext.Items["User"];
if (user == null)
{
validator.AddError("Unauthorized Request");
}
var cuser = (User)user;
if (validator.HasErrors)
{
return(null);
}
var campaign = db.Campaigns.FirstOrDefault(c => c.Id == args.Id && (c.UploaderId == cuser.Id || cuser.Role == Role.Admin));
if (campaign == null)
{
validator.AddError("Campaign Not Found");
return(null);
}
db.Campaigns.Remove(campaign);
db.SaveChanges();
return(null);
}
public Expression <Func <CampaignSaberContext, Campaign> > UpdateCampaign(CampaignSaberContext db, CampaignArgs args, GraphQLValidator validator, IHttpContextAccessor accessor)
{
if (string.IsNullOrEmpty(args.Title))
{
validator.AddError("Title argument is required");
}
if (!string.IsNullOrEmpty(args.Description))
{
if (args.Description.Length > 2000)
{
validator.AddError("Description is too long! (Max 2000 characters)");
}
}
var user = accessor.HttpContext.Items["User"];
if (user == null)
{
validator.AddError("Unauthorized Request");
}
var cuser = (User)user;
if (validator.HasErrors)
{
return(null);
}
var campaign = db.Campaigns.FirstOrDefault(c => c.Id == args.Id && (c.UploaderId == cuser.Id || cuser.Role == Role.Admin));
if (campaign == null)
{
validator.AddError("Campaign Not Found");
return(null);
}
campaign.Title = args.Title;
campaign.Description = args.Description;
db.SaveChanges();
return(ctx => ctx.Campaigns.First(c => c.Id == campaign.Id));
}
public Expression <Func <DemoContext, Person> > AddActor(DemoContext db, [MutationArguments] AddActorArgs args, GraphQLValidator validator)
{
if (string.IsNullOrEmpty(args.FirstName))
{
validator.AddError("Name argument is required");
}
if (db.Movies.FirstOrDefault(m => m.Id == args.MovieId) == null)
{
validator.AddError("MovieId not found");
}
// ... do more validation
if (validator.HasErrors)
{
return(null);
}
// we're here and valid
var person = new Person
{
Id = (uint)new Random().Next(),
FirstName = args.FirstName,
LastName = args.LastName,
};
db.People.Add(person);
var actor = new Actor
{
MovieId = args.MovieId,
Person = person,
};
db.Actors.Add(actor);
db.SaveChanges();
return((ctx) => ctx.People.First(p => p.Id == person.Id));
}