在Laravel服务器上发布图像而不是图像链接

我在我的Flatter应用程序中有两个数据字段，一个用于CategoryName，另一个用于CategoryImage，我可以使用TextFormFields成功地将数据发布到服务器，但我想将图像上传到服务器，而不是从textformfield粘贴图像链接

我的TextFormFields视图

Column(
        children: [
          TextFormField(
            controller: categoryIcon,
            decoration: InputDecoration(labelText: 'Category Icon'),
          ),
          TextFormField(
            controller: categoryName,
            decoration: InputDecoration(labelText: 'Category Name'),
          ),
          !isLoading
              ? RaisedButton(
                  shape: RoundedRectangleBorder(
                    borderRadius: BorderRadius.circular(30.0),
                  ),
                  color: Colors.deepPurple,
                  onPressed: () {
                    var category = Category();
                    category.name = categoryName.text;
                    category.icon = categoryIcon.text;
                    _postCategory(context, category);
                    setState(() {
                      isLoading = true;
                    });
                  },
                  child: Text(
                    "Post Comment",
                    style: TextStyle(
                      fontSize: 20,
                      color: Colors.white,
                    ),
                  ),
                )
              : CircularProgressIndicator()
        ],
      )

请帮助我将图像发送到laravel服务器

_postCategory(BuildContext context, Category category) async {
    var _categoryService = CategoryService();
    var postCategory = await _categoryService.postCategory(category);
    var response = json.decode(postCategory.body);
    if (response['result'] == true) {
      Navigator.pushReplacement(
          context, MaterialPageRoute(builder: (context) => CategoryList()));
    }
  }

Laravel服务器代码

public function store(Request $request)
    {
        $category = new Category();
        $category->name =  $request->input('categoryName');
        $category->icon = $request->input('categoryIcon');

        if($category->save()){
           return response(['result' => true, 'name' => $category ->name]);
        }
       return redirect()->back()->with('failed', 'Could not saved');
    }

---

请为我提供有关dart文件的帮助

public function store(Request $request)
    {

   $request->validate([
            'categoryIcon' => 'required|image|mimes:jpeg,png,jpg,gif,svg|max:2048',
        ]);
       $imageName = time().'.'.$request->categoryIcon->extension();  
        $request->categoryIcon->move(public_path('images'), $imageName);
        /* Store $imageName name in DATABASE from HERE */
        $category = new Category();
        $category->name =  $request->input('categoryName');
        $category->icon = $imageName ;

        if($category->save()){
           return response(['result' => true, 'name' => $category ->name]);
        }
       return redirect()->back()->with('failed', 'Could not saved');
    }