Dependency İnjection Error

[small dagger]

How can I solve the error in the photo?When add product I want to check categoryId .There seems to be nothing missing. Product.Controller, Product.Module and the error are in my photo. There seems to be nothing missing, but I couldn't find it.

[silver linden]

Suggestion for @small dagger:
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[brittle canopy]

looks like that error has nothing to do with dependency injection tho

double check all the @CommandHandler() occurrences and if they were added to the providers array correctly

[small dagger]

Hi Mrs Micalevisk my code this like. I checked but I didnt

[brittle canopy]

Show us the code that has the @CommandHandler for the command mentioned in the error msg

[small dagger]

My code this like. İf you want to check my code. I send github repos https://github.com/mi-cloud34/nest-cqrs-e-commerce

[small dagger]

Should I use categoryRepository instead of GetCategoryByIdQuery for categoryId control when adding a product?

[rancid sierra]

Hi @small dagger , I looked at the repository you shared. From what I understand, you are calling an API that is mapped to createProduct method in the Product controller. For brevity

  @Post()
  @UseGuards(AuthenticationGuard)
  @Message('Product created successfully.')
  async createProduct (@Req() req,  @Body() createProductDto: CreateProductDto) {

   const category = await this.commandBus.execute(new GetCategoryByIdQuery(createProductDto.categoryId.toString()));
  console.log("categoryIdddd",category);
  
  if (!category) {
    throw new NotFoundException(`Category with id ${category} not found`);
  }
    console.log("userIddddd",req.user.user._id);
  
    return this.commandBus.execute(new CreateProductCommand(createProductDto))
  }

please note that you are using command bus to execute a query, so this should have been a query bus . Also, imho after you try this change, the handler would not have been found because it was imported in another module (CategoryModule) and said module have not exported the handler (which is okay to me because you should not be knowing what category is doing in product..).

At best I'd suggest you export the CategoryService and create a method that will still invoke the query bus and execute the query