Question

在视图中

<input id="checkbox-1"  type="checkbox" value="drama" name="user[book][]">    
<input id="checkbox-2"  type="checkbox" value="poem" name="user[book][]">    
<input id="checkbox-3" type="checkbox" value="fantasy" name="user[book][]">

如果选中1和3复选框，则可能会出现类似＆＃34;戏剧，幻想＆＃34;保存在野外书中

控制器中的

private
 def user_params
  params[:user][:book] = params[:user][:book].join(',') 
  params.require(:user).permit(title, email, :book, message)
 end 




def create        
   @user = User.new(user_params)        
   if @user.save        
      UserMailer.new_feedback(@user).deliver        
      render :json => { :result => 'Text message' }        
  end    
end

当我尝试将表单输入保存到数据库时，我收到以下错误：

Template is missing

没有params[:user][:book] = params[:user][:book].join(',')工作正常，但我需要将数组转换为字符串以存储在DB列中

Answer 1

如果我理解你有代码

def create
  @user = User.new user_params
  if @user.save
     UserMailer.new_feedback(@user).deliver
     render :json => {:result => 'Text message'}
  end
# what happens if doesnt pass
end

你需要

def create
  @user = User.new user_params
  if @user.save
     UserMailer.new_feedback(@user).deliver
     render :json => {:result => 'Text message'}
  else
     render :json => @user.errors.first, :status => 400
     # when user does not create controller is looking for some template and you don't have template
  end      
end

如何在创建之前将多个复选框值保存到字符串？

1 个答案: