public ActionResult <IEnumerable <IngredientDto> > GetIngredients([FromQuery] IngredientParametersDto ingredientParametersDto)
{
var ingredientsFromRepo = _ingredientRepository.GetIngredients(ingredientParametersDto);
var previousPageLink = ingredientsFromRepo.HasPrevious
? CreateIngredientsResourceUri(ingredientParametersDto,
ResourceUriType.PreviousPage)
: null;
var nextPageLink = ingredientsFromRepo.HasNext
? CreateIngredientsResourceUri(ingredientParametersDto,
ResourceUriType.NextPage)
: null;
var paginationMetadata = new
{
totalCount = ingredientsFromRepo.TotalCount,
pageSize = ingredientsFromRepo.PageSize,
pageNumber = ingredientsFromRepo.PageNumber,
totalPages = ingredientsFromRepo.TotalPages,
hasPrevious = ingredientsFromRepo.HasPrevious,
hasNext = ingredientsFromRepo.HasNext,
previousPageLink,
nextPageLink
};
Response.Headers.Add("X-Pagination",
JsonSerializer.Serialize(paginationMetadata));
var ingredientsDto = _mapper.Map <IEnumerable <IngredientDto> >(ingredientsFromRepo);
return(Ok(ingredientsDto));
}
public PagedList <Ingredient> GetIngredients(IngredientParametersDto ingredientParameters)
{
if (ingredientParameters == null)
{
throw new ArgumentNullException(nameof(ingredientParameters));
}
var collection = _context.Ingredients as IQueryable <Ingredient>;
if (!string.IsNullOrWhiteSpace(ingredientParameters.QueryString))
{
var QueryString = ingredientParameters.QueryString.Trim();
collection = collection.Where(i => i.Name.Contains(QueryString) ||
i.Unit.Contains(QueryString));
}
if (!string.IsNullOrWhiteSpace(ingredientParameters.RecipeId.ToString()))
{
collection = collection.Where(i => i.RecipeId.Equals(ingredientParameters.RecipeId));
}
var sieveModel = new SieveModel
{
Sorts = ingredientParameters.SortOrder,
Filters = ingredientParameters.Filters
};
collection = _sieveProcessor.Apply(sieveModel, collection);
return(PagedList <Ingredient> .Create(collection,
ingredientParameters.PageNumber,
ingredientParameters.PageSize));
}
private string CreateIngredientsResourceUri(
IngredientParametersDto ingredientParametersDto,
ResourceUriType type)
{
switch (type)
{
case ResourceUriType.PreviousPage:
return(Url.Link("GetIngredients",
new
{
filters = ingredientParametersDto.Filters,
orderBy = ingredientParametersDto.SortOrder,
pageNumber = ingredientParametersDto.PageNumber - 1,
pageSize = ingredientParametersDto.PageSize,
searchQuery = ingredientParametersDto.QueryString
}));
case ResourceUriType.NextPage:
return(Url.Link("GetIngredients",
new
{
filters = ingredientParametersDto.Filters,
orderBy = ingredientParametersDto.SortOrder,
pageNumber = ingredientParametersDto.PageNumber + 1,
pageSize = ingredientParametersDto.PageSize,
searchQuery = ingredientParametersDto.QueryString
}));
default:
return(Url.Link("GetIngredients",
new
{
filters = ingredientParametersDto.Filters,
orderBy = ingredientParametersDto.SortOrder,
pageNumber = ingredientParametersDto.PageNumber,
pageSize = ingredientParametersDto.PageSize,
searchQuery = ingredientParametersDto.QueryString
}));
}
}
