Question

我最近执行了迁移，将string列转换为Postgres数组。迁移如下：

  def change
    change_column :projects, :layout_slug, "varchar[] USING (string_to_array(layout_slug, ','))"
  end

现在，我遇到了Unpermitted parameters: layout_slug的问题。我已经尝试了其他StackOverflow问题的所有已接受的答案，但他们仍然无法为我工作。以下是我迄今为止所尝试的所有变体：

def project_params
    params.require(:project).permit(:image_slug, { layout_slug: [] }, :category, ..., :selection => [:inputs => Project::ALLOWED_INPUTS.keys])
end

def project_params
    params.require(:project).permit(:image_slug, { :layout_slug => [] }, :category, ..., :selection => [:inputs => Project::ALLOWED_INPUTS.keys])
end

然后我尝试删除:layout_slug => []周围的括号，我收到了一个错误：

SyntaxError (/.../app/controllers/api/v1/projects_controller.rb:62: syntax error, unexpected ',', expecting =>
... :layout_slug => [], :category, :subcategory, :version, :ema...
...                               ^
/.../app/controllers/api/v1/projects_controller.rb:62: syntax error, unexpected ')', expecting keyword_end
/.../app/controllers/api/v1/projects_controller.rb:165: syntax error, unexpected end-of-input, expecting keyword_end):

# THIS ONE THROWS A SYNTAX ERROR
def project_params
    params.require(:project).permit(:image_slug, :layout_slug => [], :category, :subcategory, :version, :email, :zip_code, :selection => [:inputs => Project::ALLOWED_INPUTS.keys])
end

然后我将layout_slug移到了最后，然后又重新抛出了Unpermitted parameters: layout_slug错误。

# This throws the same Unpermitted parameters error as before
def project_params
    params.require(:project).permit(:image_slug, ..., :selection => [:inputs => Project::ALLOWED_INPUTS.keys], :layout_slug => [])
end

我已经对拼写进行了双重和三重检查，并且我已经验证了前端正在提交数组。

我错过了什么？我的迁移有问题吗？或者我的许可方法有什么明显的错误吗？

Answer 1

已经测试了您的示例代码，似乎没问题：

raw_parameters = { :image_slug => "some_slug", :category => "A", :layout_slug => ["a", "b"] }
parameters = ActionController::Parameters.new(raw_parameters)
parameters.permit(:image_slug, :category, :layout_slug => []) 
# {"image_slug"=>"some_slug", "category"=>"A", "layout_slug"=>["a", "b"]}

检查您的参数:layout_slug格式，也许就是

Rails 4 Postgres类型数组的未允许参数

1 个答案: