Dasic Posts - Answer Overflow

Dasic

•Created by Dasic on 3/18/2023 in #help

❔ Web API, ASP.NET and Vue.js

Please, can anyone explain for what I should use Web API? I cannot figure out when I should use MVC Controllers and API Controllers. Can I build a whole project without MVC Controllers at all or is it a code smell? I mean something like Vue.js + ASP.NET back-end

8 replies

CC#

•Created by Dasic on 3/13/2023 in #help

❔ How can I pass model data to my controller if I have another POCO class in the model?

Let's imagine that I have the classes:

public class Address
{
    public int Id { get; set; }
    public string? Street { get; set; }
    public string? BuildingNumber { get; set; }
    public string? Description { get; set; }
    public Entrance[]? Entrances { get; set; }
    public DateTime LastEdit { get; set; }
}

public class Entrance
{
    public int Id { get; set; }
    public string? Name { get; set; }
    public string? Description { get; set; }
    public Floor[]? Floors { get; set; }
}

public class Floor
{
    public int Id { get; set; }
    public string? Name { get; set; }
    public string? Description { get; set; }
}

public class Address
{
    public int Id { get; set; }
    public string? Street { get; set; }
    public string? BuildingNumber { get; set; }
    public string? Description { get; set; }
    public Entrance[]? Entrances { get; set; }
    public DateTime LastEdit { get; set; }
}

public class Entrance
{
    public int Id { get; set; }
    public string? Name { get; set; }
    public string? Description { get; set; }
    public Floor[]? Floors { get; set; }
}

public class Floor
{
    public int Id { get; set; }
    public string? Name { get; set; }
    public string? Description { get; set; }
}

How can I create a simple editor for these classes? I mean that my Create() method takes something like this:

public async Task<IActionResult> Create([Bind("Id,Street,BuildingNumber,Description,Entrances")] Address address) { ... }

public async Task<IActionResult> Create([Bind("Id,Street,BuildingNumber,Description,Entrances")] Address address) { ... }

Of course I cannot bind Entrances property because it is another class and it is an array. How can I do the trick? What should my controller accept and how can I do it in the view?

11 replies

CC#

•Created by Dasic on 12/7/2022 in #help

❔ How to use abstract factories with DI properly?

Everything works fine till the constructors of the realizations are the same. However, I have a sort of dilemma when the constructors are different. Is it okay or maybe there is an architecture issue? Here is the code:

public class CategoryViewFactory : ICategoryViewFactory
{
    private readonly ActiveProgressions _activeProgressions;

    public CategoryViewFactory(ActiveProgressions activeProgressions)
    {
        _activeProgressions = activeProgressions;
    }

    public ICategoryView? Create(CategoryType type, Category category)
    {
        return type switch
        {
            CategoryType.Category => new CategoryView(category),
            CategoryType.Subcategory => new SubcategoryView(category, _activeProgressions),
            _ => null
        };
    }
}

public class CategoryViewFactory : ICategoryViewFactory
{
    private readonly ActiveProgressions _activeProgressions;

    public CategoryViewFactory(ActiveProgressions activeProgressions)
    {
        _activeProgressions = activeProgressions;
    }

    public ICategoryView? Create(CategoryType type, Category category)
    {
        return type switch
        {
            CategoryType.Category => new CategoryView(category),
            CategoryType.Subcategory => new SubcategoryView(category, _activeProgressions),
            _ => null
        };
    }
}

ActiveProgression is a singleton service which I inject using the container. Is it okay? And what I should do if, for instance, ActiveProgression is a transient service? How can I create SubcategoryView in this case? Are there any experts in DI?

3 replies

CC#

•Created by Dasic on 8/28/2022 in #help

Newtonsoft.Json deserialize issue [Answered]

I have a json string. For example this one:

{"type":"accept","id":0,"ms_id":"00000","user_id":"000000000000","item_name":"Test Item","acc_name":"account"}

{"type":"accept","id":0,"ms_id":"00000","user_id":"000000000000","item_name":"Test Item","acc_name":"account"}

How can I deserialize some fields to a structure field in my class? For instance:

public class Order
{
    [JsonProperty("id")] public int Id { get; init; }
    [JsonProperty("item_name")] public string ItemName { get; init; }

    [JsonProperty("ms_id")] public long MessageId { get; init; }

    public Account Account { get; init; }
}

public struct Account
{
    [JsonProperty("user_id")] public long UserId { get; init; }
    [JsonProperty("acc_name")] public long Nickname { get; init; }
}

public class Order
{
    [JsonProperty("id")] public int Id { get; init; }
    [JsonProperty("item_name")] public string ItemName { get; init; }

    [JsonProperty("ms_id")] public long MessageId { get; init; }

    public Account Account { get; init; }
}

public struct Account
{
    [JsonProperty("user_id")] public long UserId { get; init; }
    [JsonProperty("acc_name")] public long Nickname { get; init; }
}

How can I deserialize the string to put these two fields in an Account field?

9 replies

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