// GET: api/Books/5
/// <summary>
/// Information for one book
/// </summary>
/// <param name="id">Book identifier (int)</param>
/// <returns>Book object</returns>
public IHttpActionResult Get(int? id)
{
// Fetch the object
var fetchedObject = w.Books.GetById(id.GetValueOrDefault());
// Continue?
if (fetchedObject == null) { return NotFound(); }
BookLinked result = new BookLinked
(Mapper.Map<BookWithLink>(fetchedObject));
// Get the request URI path
string self = Request.RequestUri.AbsolutePath;
// Add a link relation to indicate a command that can be performed
result.Links.Add(new Link() { Rel = "edit", Href = self + "/setphoto", ContentType = "image/*", Method = "PUT" });
return Ok(result);
}
// POST: api/Books
/// <summary>
/// Add a new book
/// </summary>
/// <param name="newItem">New book object (the template has the object schema)</param>
/// <returns>New book object</returns>
public IHttpActionResult Post([FromBody]BookAdd newItem)
{
// Ensure that the URI is clean (and does not have an id parameter)
if (Request.GetRouteData().Values["id"] != null) { return BadRequest("Invalid request URI"); }
// Ensure that a "newItem" is in the entity body
if (newItem == null) { return BadRequest("Must send an entity body with the request"); }
// Ensure that we can use the incoming data
if (!ModelState.IsValid) { return BadRequest(ModelState); }
// Attempt to add the new object
var addedItem = w.Books.Add(newItem);
// Continue?
if (addedItem == null) { return BadRequest("Cannot add the object"); }
// HTTP 201 with the new object in the entity body
// Notice how to create the URI for the Location header
var uri = Url.Link("DefaultApi", new { id = addedItem.Id });
// Use the factory constructor for the "add new" use case
BookLinked result = new BookLinked
(Mapper.Map<BookWithLink>(addedItem), addedItem.Id);
return Created(uri, result);
}
// PUT: api/Books/5
public IHttpActionResult Put(int id, [FromBody] BookEdit editedItem)
{
// Ensure that an "editedItem" is in the entity body
if (editedItem == null)
{
return(BadRequest("Must send an entity body with the request"));
}
// Ensure that the id value in the URI matches the id value in the entity body
if (id != editedItem.Id)
{
return(BadRequest("Invalid data in the entity body"));
}
// Ensure that we can use the incoming data
if (ModelState.IsValid)
{
// Attempt to update the item
var changedItem = m.Books.EditExisting(editedItem);
// Notice the ApiController convenience methods
if (changedItem == null)
{
// HTTP 400
return(BadRequest("Cannot edit the object"));
}
else
{
// From RFC 7231...
// http://tools.ietf.org/html/rfc7231#section-4.3.4
// "the origin server MUST send either a 200 (OK)
// or a 204 (No Content) response to indicate
// successful completion of the request"
// So, we have a choice...
// To send HTTP 204...
// return StatusCode(HttpStatusCode.NoContent);
// To send HTTP 200...
// Include the changed item in the entity body, as seen below
// Create an object to be returned
BookLinked book = new BookLinked();
// Set its item property
book.Item = Mapper.Map <BookWithLink>(changedItem);
// Get the request URI path
Uri uri = new Uri(Url.Link("DefaultApi", new { id = book.Item.Id }));
// Add a link relation for 'self'
book.Links.Add(new Link()
{
Rel = "self", Href = uri.AbsolutePath
});
// Add a link relation for the parent 'collection'
List <string> u = Request.RequestUri.Segments.ToList();
book.Links.Add(new Link()
{
Rel = "collection", Href = u[0] + u[1] + u[2]
});
// Add a link relation for 'self' in the item
book.Item.Link = new Link()
{
Rel = "self", Href = uri.AbsolutePath
};
// Return the response
return(Ok <BookLinked>(book));
}
}
else
{
return(BadRequest(ModelState));
}
}
// GET: api/Books/5
public HttpResponseMessage Get(int id)
{
var fetchedObject = m.Books.GetById(id);
if (fetchedObject == null)
{
return(Request.CreateResponse(HttpStatusCode.NotFound));
}
else
{
// Create an object to be returned
BookLinked book = new BookLinked();
// Set its item property
book.Item = Mapper.Map <BookWithLink>(fetchedObject);
// Get the request URI path
string self = Request.RequestUri.AbsolutePath;
// Add a link relation for 'self'
book.Links.Add(new Link()
{
Rel = "self", Href = self
});
// Add a link relation for the parent 'collection'
List <string> u = Request.RequestUri.Segments.ToList();
book.Links.Add(new Link()
{
Rel = "collection", Href = u[0] + u[1] + u[2]
});
// ############################################################
// New on Wed Oct 8 2014...
// Add a link relation to indicate that an alternate representation is available
book.Links.Add(new Link()
{
Rel = "self", Href = self, ContentType = "image/*", Title = "Book cover photo"
});
// Add a link relation to indicate a command that can be performed
book.Links.Add(new Link()
{
Rel = "edit", Href = self + "/setphoto", ContentType = "image/*", Method = "PUT"
});
// ############################################################
// Add a link relation for 'self' in the item
book.Item.Link = new Link()
{
Rel = "self", Href = self
};
// Build a response object
var response = Request.CreateResponse(HttpStatusCode.OK, book);
// The repository method has returned a BookLinked object
// We need to know if the request asked for an image to be returned.
// If so, we need to configure the Content-Type header BEFORE the object
// is passed on to the 'image' media formatter.
// Unfortunately, the current design of the media formatter does not
// allow us to dynamically set the response's Content-Type header.
// See this post - http://stackoverflow.com/a/12565530
// Step 1 - look for an Accept header that starts with 'image'
var imageHeader = Request.Headers.Accept
.SingleOrDefault(a => a.MediaType.ToLower().StartsWith("image/"));
// Step 2 - if found, set the Content-Type header value
if (imageHeader != null)
{
if (string.IsNullOrEmpty(book.Item.ContentType))
{
response.StatusCode = HttpStatusCode.NoContent;
}
else
{
response.Content.Headers.ContentType =
new System.Net.Http.Headers.MediaTypeHeaderValue(book.Item.ContentType);
}
}
// Return the result
return(response);
}
}
// POST: api/Books
public HttpResponseMessage Post([FromBody] BookAdd newItem)
{
// Ensure that the URI is clean (and does not have an id parameter)
if (Request.GetRouteData().Values["id"] != null)
{
return(Request.CreateErrorResponse
(HttpStatusCode.BadRequest, "Invalid request URI"));
}
// Ensure that a "newItem" is in the entity body
if (newItem == null)
{
return(Request.CreateErrorResponse
(HttpStatusCode.BadRequest, "Must send an entity body with the request"));
}
// Ensure that we can use the incoming data
if (ModelState.IsValid)
{
// Attempt to add the new object
var addedItem = m.Books.AddNew(newItem);
if (addedItem == null)
{
// HTTP 400
return(Request.CreateErrorResponse
(HttpStatusCode.BadRequest, "Cannot add the object"));
}
else
{
// HTTP 201 with the new object in the entity body
// Notice how to create the URI for the Location header
// Create an object to be returned
BookLinked book = new BookLinked();
// Set its item property
book.Item = Mapper.Map <BookWithLink>(addedItem);
// Get the request URI path
Uri uri = new Uri(Url.Link("DefaultApi", new { id = book.Item.Id }));
// Add a link relation for 'self'
book.Links.Add(new Link()
{
Rel = "self", Href = uri.AbsolutePath
});
// Add a link relation for the parent 'collection'
List <string> u = Request.RequestUri.Segments.ToList();
book.Links.Add(new Link()
{
Rel = "collection", Href = u[0] + u[1] + u[2]
});
// Add a link relation for 'self' in the item
book.Item.Link = new Link()
{
Rel = "self", Href = uri.AbsolutePath
};
// Build the response object
var response = Request.CreateResponse <BookLinked>(HttpStatusCode.Created, book);
// Set the Location header
response.Headers.Location = uri;
// Return the response
return(response);
}
}
else
{
// HTTP 400
return(Request.CreateErrorResponse
(HttpStatusCode.BadRequest, ModelState));
}
}
// GET: api/Books/5
public HttpResponseMessage Get(int id)
{
var fetchedObject = m.Books.GetById(id);
if (fetchedObject == null)
{
return Request.CreateResponse(HttpStatusCode.NotFound);
}
else
{
// Create an object to be returned
BookLinked book = new BookLinked();
// Set its item property
book.Item = Mapper.Map<BookWithLink>(fetchedObject);
// Get the request URI path
string self = Request.RequestUri.AbsolutePath;
// Add a link relation for 'self'
book.Links.Add(new Link() { Rel = "self", Href = self });
// Add a link relation for the parent 'collection'
List<string> u = Request.RequestUri.Segments.ToList();
book.Links.Add(new Link() { Rel = "collection", Href = u[0] + u[1] + u[2] });
// ############################################################
// New on Wed Oct 8 2014...
// Add a link relation to indicate that an alternate representation is available
book.Links.Add(new Link() { Rel = "self", Href = self, ContentType = "image/*", Title = "Book cover photo" });
// Add a link relation to indicate a command that can be performed
book.Links.Add(new Link() { Rel = "edit", Href = self + "/setphoto", ContentType = "image/*", Method = "PUT" });
// ############################################################
// Add a link relation for 'self' in the item
book.Item.Link = new Link() { Rel = "self", Href = self };
// Build a response object
var response = Request.CreateResponse(HttpStatusCode.OK, book);
// The repository method has returned a BookLinked object
// We need to know if the request asked for an image to be returned.
// If so, we need to configure the Content-Type header BEFORE the object
// is passed on to the 'image' media formatter.
// Unfortunately, the current design of the media formatter does not
// allow us to dynamically set the response's Content-Type header.
// See this post - http://stackoverflow.com/a/12565530
// Step 1 - look for an Accept header that starts with 'image'
var imageHeader = Request.Headers.Accept
.SingleOrDefault(a => a.MediaType.ToLower().StartsWith("image/"));
// Step 2 - if found, set the Content-Type header value
if (imageHeader != null)
{
if (string.IsNullOrEmpty(book.Item.ContentType))
{
response.StatusCode = HttpStatusCode.NoContent;
}
else
{
response.Content.Headers.ContentType =
new System.Net.Http.Headers.MediaTypeHeaderValue(book.Item.ContentType);
}
}
// Return the result
return response;
}
}
// PUT: api/Books/5
public IHttpActionResult Put(int id, [FromBody]BookEdit editedItem)
{
// Ensure that an "editedItem" is in the entity body
if (editedItem == null)
{
return BadRequest("Must send an entity body with the request");
}
// Ensure that the id value in the URI matches the id value in the entity body
if (id != editedItem.Id)
{
return BadRequest("Invalid data in the entity body");
}
// Ensure that we can use the incoming data
if (ModelState.IsValid)
{
// Attempt to update the item
var changedItem = m.Books.EditExisting(editedItem);
// Notice the ApiController convenience methods
if (changedItem == null)
{
// HTTP 400
return BadRequest("Cannot edit the object");
}
else
{
// From RFC 7231...
// http://tools.ietf.org/html/rfc7231#section-4.3.4
// "the origin server MUST send either a 200 (OK)
// or a 204 (No Content) response to indicate
// successful completion of the request"
// So, we have a choice...
// To send HTTP 204...
// return StatusCode(HttpStatusCode.NoContent);
// To send HTTP 200...
// Include the changed item in the entity body, as seen below
// Create an object to be returned
BookLinked book = new BookLinked();
// Set its item property
book.Item = Mapper.Map<BookWithLink>(changedItem);
// Get the request URI path
Uri uri = new Uri(Url.Link("DefaultApi", new { id = book.Item.Id }));
// Add a link relation for 'self'
book.Links.Add(new Link() { Rel = "self", Href = uri.AbsolutePath });
// Add a link relation for the parent 'collection'
List<string> u = Request.RequestUri.Segments.ToList();
book.Links.Add(new Link() { Rel = "collection", Href = u[0] + u[1] + u[2] });
// Add a link relation for 'self' in the item
book.Item.Link = new Link() { Rel = "self", Href = uri.AbsolutePath };
// Return the response
return Ok<BookLinked>(book);
}
}
else
{
return BadRequest(ModelState);
}
}
// POST: api/Books
public HttpResponseMessage Post([FromBody]BookAdd newItem)
{
// Ensure that the URI is clean (and does not have an id parameter)
if (Request.GetRouteData().Values["id"] != null)
{
return Request.CreateErrorResponse
(HttpStatusCode.BadRequest, "Invalid request URI");
}
// Ensure that a "newItem" is in the entity body
if (newItem == null)
{
return Request.CreateErrorResponse
(HttpStatusCode.BadRequest, "Must send an entity body with the request");
}
// Ensure that we can use the incoming data
if (ModelState.IsValid)
{
// Attempt to add the new object
var addedItem = m.Books.AddNew(newItem);
if (addedItem == null)
{
// HTTP 400
return Request.CreateErrorResponse
(HttpStatusCode.BadRequest, "Cannot add the object");
}
else
{
// HTTP 201 with the new object in the entity body
// Notice how to create the URI for the Location header
// Create an object to be returned
BookLinked book = new BookLinked();
// Set its item property
book.Item = Mapper.Map<BookWithLink>(addedItem);
// Get the request URI path
Uri uri = new Uri(Url.Link("DefaultApi", new { id = book.Item.Id }));
// Add a link relation for 'self'
book.Links.Add(new Link() { Rel = "self", Href = uri.AbsolutePath });
// Add a link relation for the parent 'collection'
List<string> u = Request.RequestUri.Segments.ToList();
book.Links.Add(new Link() { Rel = "collection", Href = u[0] + u[1] + u[2] });
// Add a link relation for 'self' in the item
book.Item.Link = new Link() { Rel = "self", Href = uri.AbsolutePath };
// Build the response object
var response = Request.CreateResponse<BookLinked>(HttpStatusCode.Created, book);
// Set the Location header
response.Headers.Location = uri;
// Return the response
return response;
}
}
else
{
// HTTP 400
return Request.CreateErrorResponse
(HttpStatusCode.BadRequest, ModelState);
}
}
// GET: api/Books/5
/// <summary>
/// Information for one book
/// </summary>
/// <param name="id">Book identifier (int)</param>
/// <returns>Book object</returns>
public IHttpActionResult Get(int? id)
{
// Attention - This method DOES use content negotiation (aka conneg)
// Fetch the object
var fetchedObject = w.Books.GetById(id.GetValueOrDefault());
// Continue?
if (fetchedObject == null) { return NotFound(); }
// Attention - Here is the content negotiation code
// Look for an Accept header that starts with 'image'
var imageHeader = Request.Headers.Accept
.SingleOrDefault(a => a.MediaType.ToLower().StartsWith("image/"));
if (imageHeader == null)
{
// Normal processing for a JSON result
BookLinked result = new BookLinked(Mapper.Map<BookWithLink>(fetchedObject));
// Get the request URI path
string self = Request.RequestUri.AbsolutePath;
// Add a link relation to indicate a command that can be performed
result.Links.Add(new Link() { Rel = "edit", Href = self + "/setphoto", ContentType = "image/*", Method = "PUT" });
// If a media item exists, add some custom links...
if (result.Item.PhotoLength > 0)
{
// Add a link relation to indicate that an alternate representation is available
result.Links.Add(new Link() { Rel = "self", Href = self, ContentType = "image/*", Title = "Book cover photo", Method = "GET" });
// Add a link relation to indicate that an alternate representation is available
result.Links.Add(new Link() { Rel = "self", Href = self + "/photo", ContentType = "image/*", Title = "Book cover photo", Method = "GET" });
}
// Return the result, using the built-in media formatters (JSON, XML)
return Ok(result);
}
else
{
// Special processing for an image result
// Confirm that a media item exists
if (fetchedObject.PhotoLength > 0)
{
// Return the result, using the custom media formatter
return Ok(fetchedObject.Photo);
}
else
{
// Otherwise, return "not found"
// Yes, this is correct. Read the RFC: https://tools.ietf.org/html/rfc7231#section-6.5.4
return NotFound();
}
}
}
