/// <summary>
/// This sets up the dropdownlist for the possible bloggers and the MultiSelectList of tags
/// </summary>
/// <param name="context"></param>
/// <param name="dto"></param>
protected override void SetupSecondaryData(IGenericServicesDbContext context, DetailPostDto dto)
{
dto.Bloggers.SetupDropDownListContent(
context.Set <Blog>()
.ToList()
.Select(x => new KeyValuePair <string, string>(x.Name, x.BlogId.ToString("D"))),
"--- choose blogger ---");
if (dto.PostId != 0)
{
//there is an entry, so set the selected value to that
dto.Bloggers.SetSelectedValue(dto.BlogId.ToString("D"));
}
var preselectedTags = dto.PostId == 0
? new List <KeyValuePair <string, int> >()
: context.Set <Tag>()
.Where(x => x.Posts.Any(y => y.PostId == dto.PostId))
.Select(x => new { Key = x.Name, Value = x.TagId })
.ToList()
.Select(x => new KeyValuePair <string, int>(x.Key, x.Value))
.ToList();
dto.UserChosenTags.SetupMultiSelectList(
context.Set <Tag>().ToList().Select(x => new KeyValuePair <string, int>(x.Name, x.TagId)), preselectedTags);
}
/// <summary>
/// This sets up the dropdownlist for the possible bloggers and the MultiSelectList of tags
/// </summary>
/// <param name="context"></param>
/// <param name="dto"></param>
protected override async Task SetupSecondaryDataAsync(IGenericServicesDbContext context, DetailPostDtoAsync dto)
{
var bloggers = await context.Set <Blog>().ToListAsync();
dto.Bloggers.SetupDropDownListContent(bloggers.Select(x => new KeyValuePair <string, string>(x.Name, x.BlogId.ToString("D"))),
"--- choose blogger ---");
if (dto.PostId != 0)
{
//there is an entry, so set the selected value to that
dto.Bloggers.SetSelectedValue(dto.BlogId.ToString("D"));
}
List <KeyValuePair <string, int> > preselectedTags;
if (dto.PostId == 0)
{
//create, so just produce empty list
preselectedTags = new List <KeyValuePair <string, int> >();
}
else
{
var tags = await context.Set <Tag>()
.Where(x => x.Posts.Any(y => y.PostId == dto.PostId))
.Select(x => new { Key = x.Name, Value = x.TagId })
.ToListAsync();
preselectedTags = tags.Select(x => new KeyValuePair <string, int>(x.Key, x.Value))
.ToList();
}
dto.UserChosenTags.SetupMultiSelectList(
context.Set <Tag>().ToList().Select(x => new KeyValuePair <string, int>(x.Name, x.TagId)), preselectedTags);
}
/// <summary>
/// This will delete an item from the database
/// </summary>
/// <param name="keys">The keys must be given in the same order as entity framework has them</param>
/// <returns></returns>
public async Task <ISuccessOrErrors> DeleteAsync <TEntity>(params object[] keys) where TEntity : class
{
var keyProperties = _db.GetKeyProperties <TEntity>();
if (keyProperties.Count != keys.Length)
{
throw new ArgumentException("The number of keys in the data entry did not match the number of keys provided");
}
var entityToDelete = await _db.Set <TEntity>().FindAsync(keys);
if (entityToDelete == null)
{
return
(new SuccessOrErrors().AddSingleError(
"Could not delete entry as it was not in the database. Could it have been deleted by someone else?"));
}
_db.Set <TEntity>().Remove(entityToDelete);
var result = await _db.SaveChangesWithCheckingAsync();
if (result.IsValid)
{
result.SetSuccessMessage("Successfully deleted {0}.", typeof(TEntity).Name);
}
return(result);
}
private ISuccessOrErrors DeleteBloggerWithPost(IGenericServicesDbContext db, SimplePostDto post)
{
var blogger = db.Set <Blog>().SingleOrDefault(x => x.Name == post.BloggerName);
db.Set <Blog>().Remove(blogger);
return(SuccessOrErrors.Success("It was fine."));
}
private async Task <ISuccessOrErrors> DeleteBloggerWithPost(IGenericServicesDbContext db, Post post)
{
var blogger = await db.Set <Blog>().FindAsync(post.BlogId);
db.Set <Blog>().Remove(blogger);
return(SuccessOrErrors.Success("It was fine."));
}
public static ISuccessOrErrors DeleteAssociatedAddress(IGenericServicesDbContext db, CustomerAddress customerAddress)
{
var address = db.Set<Address>().Find(customerAddress.AddressID);
if (address == null)
return
new SuccessOrErrors().AddSingleError(
"Could not delete the associated entry as it was not in the database. Could it have been deleted by someone else?");
db.Set<Address>().Remove(address);
return SuccessOrErrors.Success("Removed Ok");
}
public static ISuccessOrErrors DeleteAssociatedAddress(IGenericServicesDbContext db, CustomerAddress customerAddress)
{
var address = db.Set <Address>().Find(customerAddress.AddressID);
if (address == null)
{
return
(new SuccessOrErrors().AddSingleError(
"Could not delete the associated entry as it was not in the database. Could it have been deleted by someone else?"));
}
db.Set <Address>().Remove(address);
return(SuccessOrErrors.Success("Removed Ok"));
}
//------------------------------------------------------------------------------------------
//now the setup parts for the dropdown boxes
/// <summary>
/// This is called before a create and an update. It is an update if the dto key property is non zero.
/// </summary>
/// <param name="db"></param>
/// <param name="dto"></param>
protected override void SetupSecondaryData(IGenericServicesDbContext db, CrudSalesOrderDto dto)
{
var getPossibleAddresses = db.Set <CustomerAddress>().Include(x => x.Address).Where(x => x.CustomerID == dto.CustomerID).ToList();
dto.ShipToOptions.SetupDropDownListContent(
getPossibleAddresses.Select(
y =>
new KeyValuePair <string, string>(ListCustomerAddressDto.FormCustomerAddressFormatted(y),
y.AddressID.ToString("D"))),
"--- choose ship to address ---");
if (dto.SalesOrderID != 0 && dto.ShipToAddressID != null)
{
//there is an entry, so set the selected value to that
dto.ShipToOptions.SetSelectedValue(((int)dto.ShipToAddressID).ToString("D"));
}
dto.BillToOptions.SetupDropDownListContent(
getPossibleAddresses.Select(
y =>
new KeyValuePair <string, string>(ListCustomerAddressDto.FormCustomerAddressFormatted(y),
y.AddressID.ToString("D"))),
"--- choose bill to address ---");
if (dto.SalesOrderID != 0 && dto.BillToAddressID != null)
{
//there is an entry, so set the selected value to that
dto.BillToOptions.SetSelectedValue(((int)dto.BillToAddressID).ToString("D"));
}
}
/// <summary>
/// This sets up useful information to show the user that he has the right order to update
/// Note: that the SalesOrderID must be set but the others are purely for display
/// </summary>
/// <param name="salesOrderId"></param>
public void SetupRestOfDto(int salesOrderId)
{
SalesOrderID = salesOrderId;
var salesOrderHeader = _db.Set <SalesOrderHeader>().SingleOrDefault(x => x.SalesOrderID == salesOrderId);
if (salesOrderHeader == null)
{
return;
}
SalesOrderNumber = salesOrderHeader.SalesOrderNumber;
var customer = _db.Set <Customer>().SingleOrDefault(x => x.CustomerID == salesOrderHeader.CustomerID);
if (customer == null)
{
return;
}
CustomerCompanyName = customer.CompanyName;
}
/// <summary>
/// This is used to update the SalesOrderHeader total when a line item is deleted
/// </summary>
/// <param name="db"></param>
/// <param name="lineItemBeingDeleted"></param>
/// <returns></returns>
public static ISuccessOrErrors UpdateSalesOrderHeader(IGenericServicesDbContext db, SalesOrderDetail lineItemBeingDeleted)
{
var salesOrderHeader = db.Set<SalesOrderHeader>().Include(x => x.SalesOrderDetails).Single(x => x.SalesOrderID == lineItemBeingDeleted.SalesOrderID);
salesOrderHeader.SubTotal =
salesOrderHeader.SalesOrderDetails.Where(
x => x.SalesOrderDetailID != lineItemBeingDeleted.SalesOrderDetailID).Sum(x => x.LineTotal);
return SuccessOrErrors.Success("Removed Ok");
}
/// <summary>
/// This is used to update the SalesOrderHeader total when a line item is deleted
/// </summary>
/// <param name="db"></param>
/// <param name="lineItemBeingDeleted"></param>
/// <returns></returns>
public static ISuccessOrErrors UpdateSalesOrderHeader(IGenericServicesDbContext db, SalesOrderDetail lineItemBeingDeleted)
{
var salesOrderHeader = db.Set <SalesOrderHeader>().Include(x => x.SalesOrderDetails).Single(x => x.SalesOrderID == lineItemBeingDeleted.SalesOrderID);
salesOrderHeader.SubTotal =
salesOrderHeader.SalesOrderDetails.Where(
x => x.SalesOrderDetailID != lineItemBeingDeleted.SalesOrderDetailID).Sum(x => x.LineTotal);
return(SuccessOrErrors.Success("Removed Ok"));
}
/// <summary>
/// This will delete an item from the database
/// </summary>
/// <param name="keys">The keys must be given in the same order as entity framework has them</param>
/// <returns></returns>
public async Task <ISuccessOrErrors> DeleteAsync <TEntity>(params object[] keys) where TEntity : class
{
var entityToDelete = await _db.Set <TEntity>().FindAsync(keys).ConfigureAwait(false);
if (entityToDelete == null)
{
return
(new SuccessOrErrors().AddSingleError(
"Could not delete entry as it was not in the database. Could it have been deleted by someone else?"));
}
_db.Set <TEntity>().Remove(entityToDelete);
var result = await _db.SaveChangesWithCheckingAsync().ConfigureAwait(false);
if (result.IsValid)
{
result.SetSuccessMessage("Successfully deleted {0}.", typeof(TEntity).Name);
}
return(result);
}
//This code is the second attempt at improving the SQL query for Customers
//It uses the from ... in format of LINQ which allows a let assignment in it.
//This produces a better SQL query
protected override IQueryable <ListCustomerVer2Dto> ListQueryUntracked(IGenericServicesDbContext context)
{
return(from x in context.Set <Customer>()
let hasBoughtBefore = x.SalesOrderHeaders.Any()
select new ListCustomerVer2Dto
{
CustomerID = x.CustomerID,
CompanyName = x.CompanyName,
FullName = x.Title + (x.Title == null ? "" : " ") + x.FirstName + " " + x.LastName + " " + x.Suffix,
HasBoughtBefore = hasBoughtBefore,
TotalAllOrders = hasBoughtBefore ? x.SalesOrderHeaders.Sum(y => y.TotalDue) : 0
});
}
private static ISuccessOrErrors SetupRestOfDto(IGenericServicesDbContext db, CrudSalesOrderDto dto)
{
var status = SuccessOrErrors.Success("OK if no errors set");
var shipToAddressId = dto.ShipToOptions.SelectedValueAsInt;
dto.ShipToAddressID = shipToAddressId != null &&
db.Set <CustomerAddress>()
.SingleOrDefault(
x => x.AddressID == shipToAddressId && x.CustomerID == dto.CustomerID) != null
? shipToAddressId
: null; //could do more error checking here, but we fail safe if any error
var billToAddressId = dto.BillToOptions.SelectedValueAsInt;
dto.BillToAddressID = billToAddressId != null &&
db.Set <CustomerAddress>()
.SingleOrDefault(
x => x.AddressID == billToAddressId && x.CustomerID == dto.CustomerID) != null
? billToAddressId
: null; //could do more error checking here, but we fail safe if any error
return(status);
}
protected override ISuccessOrErrors <SalesOrderDetail> CreateDataFromDto(IGenericServicesDbContext context, CreateLineItemDto source)
{
var status = base.CreateDataFromDto(context, source);
if (!status.IsValid)
{
return(status);
}
//we read the list price from the products
status.Result.UnitPrice = context.Set <Product>().Single(x => x.ProductID == source.ProductID).ListPrice;
status.Result.UnitPriceDiscount = 0;
return(status);
}
//For update to work we need to include the Address for it to be tracked.
protected override CustomerAddress FindItemTrackedForUpdate(IGenericServicesDbContext context)
{
return(context.Set <CustomerAddress>()
.Where(x => x.CustomerID == CustomerID && x.AddressID == AddressID)
.Include(x => x.Address).SingleOrDefault());
}
/// <summary>
/// This is used for update. This returns the TEntity item that fits the key(s) in the DTO.
/// Override this if you need to include any related entries when doing a complex update.
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
internal protected virtual async Task <TEntity> FindItemTrackedForUpdateAsync(IGenericServicesDbContext context)
{
return(await context.Set <TEntity>().FindAsync(GetKeyValues(context)));
}
/// <summary>
/// This returns the TEntity item that fits the key(s) in the DTO.
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
internal protected override async Task <TEntity> FindItemTrackedForUpdateAsync(IGenericServicesDbContext context)
{
using (new LogStartStop(this))
return(await context.Set <TEntity>().FindAsync(GetKeyValues(context)).ConfigureAwait(false));
}
/// <summary>
/// Used only by Update. This returns the TEntity item that fits the key(s) in the DTO.
/// Override this if you need to include any related entries when doing a complex update.
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
internal protected virtual TEntity FindItemTrackedForUpdate(IGenericServicesDbContext context)
{
return(context.Set <TEntity>().Find(GetKeyValues(context)));
}
/// <summary>
/// This method is called to get the data table. Can be overridden if include statements are needed.
/// </summary>
/// <param name="context"></param>
/// <returns>returns an IQueryable of the table TEntity as Untracked</returns>
protected virtual IQueryable <TEntity> GetDataUntracked(IGenericServicesDbContext context)
{
return(context.Set <TEntity>().AsNoTracking());
}
public bool EntityExists(int key)
{
return(_db.Set <TEntity>().Find(key) != null);
}
private ISuccessOrErrors DeleteBloggerWithPost(IGenericServicesDbContext db, SimplePostDto post)
{
var blogger = db.Set<Blog>().SingleOrDefault(x => x.Name == post.BloggerName);
db.Set<Blog>().Remove(blogger);
return SuccessOrErrors.Success("It was fine.");
}
private async Task<ISuccessOrErrors> DeleteBloggerWithPost(IGenericServicesDbContext db, Post post)
{
var blogger = await db.Set<Blog>().FindAsync(post.BlogId);
db.Set<Blog>().Remove(blogger);
return SuccessOrErrors.Success("It was fine.");
}
