public IHttpActionResult Put(int id, [FromBody] Band updateValues) //PUT http://localhost:49677/api/artists/id , update values in body
{
if (!ModelState.IsValid)
return BadRequest(ModelState);
else
{
Band band;
using (var context = new Context())
{
band = context.Bands.Where(b => b.Id == id).FirstOrDefault();
}
if (band != null)
{
band.Name = updateValues.Name; //does updates in disconnnected state
band.Rating = updateValues.Rating;
using (var context = new Context()) //open new context, save update
{
context.Bands.Attach(band);
context.Entry(band).State = EntityState.Modified;
context.SaveChanges();
}
return Ok();
}
else
return NotFound();
}
}
public IHttpActionResult Get() //GET http://localhost:49677/api/artists
{
List<Band> bands = null;
using (var context = new Context())
{
bands = context.Bands.ToList();
}
return Ok(bands);
}
public IHttpActionResult Post(Band band) //POST http://localhost:49677/api/artists , values in body
{
if (!ModelState.IsValid)
return BadRequest(ModelState);
else
{
using (var context = new Context())
{
context.Bands.Add(band);
context.SaveChanges();
}
return Created("api/artists/" + band.Id, band);
}
}
public IHttpActionResult Get(int id) //GET http://localhost:49677/api/artists/id
{
Band band;
using (var context = new Context())
{
band = context.Bands.Find(id); //Where(b => b.Id == id).FirstOrDefault();
context.Entry(band).Collection(a => a.Albums).Load(); //explicit load. i have disabled lazy loading
}
if (band == null)
return NotFound();
else
return Ok(band);
}
public IHttpActionResult Delete(int id) //DELETE http://localhost:49677/api/artists/id
{
Band band;
using (var context = new Context())
{
band = context.Bands.Where(b => b.Id == id).FirstOrDefault();
context.Bands.Remove(band);
context.SaveChanges();
}
/*julie lerman showed using a second context and using this code
using (var context = new BandEntities())
{
context.Bands.Attach(band);
context.Entry(band).State = EntityState.Deleted;
context.SaveChanges();
*/
return Ok();
}
