Question

保存宠物后，我想重定向到对待/显示控制器。我试过这样做，但它让我回到宠物/秀。

      float [ ] triNormals = new float [ indices.length ];

      for ( int i = 0 , index = 0 ; i < indices.length ;  )
      {
         float x , y , z;

         x = vertices [ ( 3 * indices [ i ] ) ];
         y = vertices [ ( 3 * indices [ i ] ) + 1 ];
         z = vertices [ ( 3 * indices [ i ++ ] ) + 2 ];

         Vector3f p1 = new Vector3f ( x , y , z );

         x = vertices [ ( 3 * indices [ i ] ) ];
         y = vertices [ ( 3 * indices [ i ] ) + 1 ];
         z = vertices [ ( 3 * indices [ i ++ ] ) + 2 ];

         Vector3f p2 = new Vector3f ( x , y , z );

         x = vertices [ ( 3 * indices [ i ] ) ];
         y = vertices [ ( 3 * indices [ i ] ) + 1 ];
         z = vertices [ ( 3 * indices [ i ++ ] ) + 2 ];

         Vector3f p3 = new Vector3f ( x , y , z );

         Vector3f u = Vector3f.subtract ( p2 , p1 );
         Vector3f v = Vector3f.subtract ( p3 , p1 );

         Vector3f normal = Vector3f.crossProduct ( u , v );

         triNormals [ index ++ ] = normal.x;
         triNormals [ index ++ ] = normal.y;
         triNormals [ index ++ ] = normal.z;
      }

Answer 1

您可以为重定向路径执行此操作：

format.html  { redirect_to(treat_path(@treat) }

Answer 2

您的@pets变量应为@pet ...

像这样：

def create
   @pet = Pet.new pet_params

-

<强> 2。您无法定义@treat变量：

@treat = Treat.find params[:treat_id] ?

这显示在这里：

{:action=>"show", :controller=>"treat", :id=>nil}

所以答案是你需要定义@treat。由于我不了解您的关联，或者您希望如何填充@treat，因此有两种方法可以创建它：

从association（IE @pet.treat）中提取或明确调用它：（@treat -）...

为简单起见，您最好执行以下操作：

def create
    @pets = Pet.new pet_params 
    @treat = Treat.find [[[num - where do you get this from?]]]

    ...
end

-

如果您的模型设置如此：

#app/models/pet.rb
class Pet < ActiveRecord::Base
   has_many :treats
end

#app/models/treat.rb
class Treat < ActiveRecord::Base
   belongs_to :pet
end

您可以使用以下内容：

def create
    @pet = Pet.new pet_params
    @treat = @pet.treat.new treat_params

    respond_to do ...

end

private

def treat_params
   params.require(:treat).permit(:treat, :params)
end

如何重定向/渲染到另一个控制器的视图？

2 个答案: