text: category_list_query = """
  query{
        allCategories{
          name
          id
        }
      }
  """
  
  single_category_query = """
  
      query{
        category(id: 1) {
          id
          name
        }
      }
  
  """
  
  create_category_mutation = """
       mutation createCategory($name: String) {
          createCategory(name: $name){
              category{
                  name
              }
          }
    }
  
  """
  
  update_category_mutation = """
      mutation updateCategory($name: String, $id: ID){
          updateCategory(name: $name, id: $id)
          {
              category{
                  name
                  id
              }
          }
      }
  """
  
  delete_category_mutation = """
      mutation deleteCategory($id: ID!) {
          deleteCategory(id: $id) {
              ok
          }
      }
  """
  
  # ================================= For product modules =====================
  product_query_list = """
      query{
        allProducts{
            id
            name
            price
            category{
              id
              name
            }
        inStock
        }
      }
  """
  
  