eysidi
eysidi
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CC#
Created by eysidi on 2/28/2024 in #help
Dependency Inversion
Hello all, I had asked this before and was answered I need to implement dependency inversion I have Shape abstract class and and interface which is responsible for drawing the shape. 
c#
public interface IShapeDrawer
{
    void Draw(Vector2 position);
}
public abstract class Shape : IShapeDrawer
{
    public abstract string Name; // Name to display

    public abstract void Draw(Vector2 position); // Interface to abstract
}
c#
public interface IShapeDrawer
{
    void Draw(Vector2 position);
}
public abstract class Shape : IShapeDrawer
{
    public abstract string Name; // Name to display

    public abstract void Draw(Vector2 position); // Interface to abstract
}
The problem is: each shape uses position to calculate coordinates, for circle it would be single Vector2 for square, rectangle etc it would be 2 and for triangle it would be 3. So I need an interface, right 
c#
public interface ICoordinateCalculator
{
    Vector2 CalculateCoordinate(Vector2 position);
}

public interface IMultipleCoodinateCalculator
{
    Vector2[] CalculateCoordinates(Vector2 position);
}

public CircleCoordinateCalculator : ICoordinateCalculator
{
    Vector2 CalculateCoordinate(Vector2 position) => position;
}
c#
public interface ICoordinateCalculator
{
    Vector2 CalculateCoordinate(Vector2 position);
}

public interface IMultipleCoodinateCalculator
{
    Vector2[] CalculateCoordinates(Vector2 position);
}

public CircleCoordinateCalculator : ICoordinateCalculator
{
    Vector2 CalculateCoordinate(Vector2 position) => position;
}
Now my problem is, how do I implement this in my Shapeclass
40 replies
CC#
Created by eysidi on 8/28/2023 in #help
❔ Serializing related object EF
Hello all, I have 2 models 
public class City {
    [Key]
    public int Id { get; set; }
    [Required]
    public string Name { get; set; }
    [Required]
    public string CountryName { get; set; }
    public Coordinates? Coordinates { get; set; }
}

public class Coordinates {
    public int Id { get; set; }
    public double X { get; set; }
    public double Y { get; set; }
    public int CityId { get; set; }
    public City City { get; set; } = null!;
}
public class City {
    [Key]
    public int Id { get; set; }
    [Required]
    public string Name { get; set; }
    [Required]
    public string CountryName { get; set; }
    public Coordinates? Coordinates { get; set; }
}

public class Coordinates {
    public int Id { get; set; }
    public double X { get; set; }
    public double Y { get; set; }
    public int CityId { get; set; }
    public City City { get; set; } = null!;
}
And I would like to include Coordinates of City in my response however I get error JsonException: A possible object cycle was detected. This can either be due to a cycle or if the object depth is larger than the maximum allowed depth of 64 My query is 
return db.Cities
        .Where(c => c.Name.ToLower().Contains(city.ToLower()))
        .Include(c => c.Coordinates)
        .ToList();
return db.Cities
        .Where(c => c.Name.ToLower().Contains(city.ToLower()))
        .Include(c => c.Coordinates)
        .ToList();
I have googled it and found different approaches but from the examples I saw, this should be working. Why does this happen?
47 replies