Question

我有一个form将数组传递给参数中的控制器，并且它会导致ActiveModel::ForbiddenAttributesError。我的create函数调用另一个函数来修复这些数组参数并将这些部分组合成一个字符串，但我认为那时已经太晚了。

PARAMS

{  "remote"=>
      {  "name"=>"",
         "start_date"=>"9/27/2016",
         "email"=>"",
         "allergies"=>["Peanuts", "Soy Protein", "Dairy", ""],
      }
}

控制器

def create

    new_params = fix_params(params, ["allergies"])
    remote_params = new_params["remote"]
    @remote = Remote.new(remote_params)

    respond_to do |format|
        if @remote.save
            format.html { redirect_to root_path, notice: 'Remote was successfully created.' }
            format.json { render :show, status: :created, location: @remote }
        else
            format.html { render :new }
            format.json { render json: @remote.errors, status: :unprocessable_entity }
        end
    end
end

def fix_params(params, fields)
        fields.each do |field|
            to_change = params[:remote][field]
            new_param = to_change.join(", ").strip()
            params[:remote][field] = new_param || ""
        end
    return params
end

也许有更好的方法来传递这些变量？

Answer 1

错误发生的原因是unpermitted parameters因为我从未明确表示将会在array中传递params.require(:remote).permit(:name, :start_date, :email, :allergies => [])。

我修改了我的强参数以包含# Do not remove this line, otherwise mod_rewrite rules will stop working RewriteBase /

Rails 4：带有哈希的参数

1 个答案: