如何验证取决于不同的提交按钮

Question

我的应用程序有“save_button”、“check_button”和“submit_button”，我只想进行验证，如果我单击“submit_button”如果有人没有附加任何文件（tape_files）并提交，请避免。

Model:
validates :tape_files, attached: true, on: :update

View:
<%= f.submit "Save", name: "save_button" %>
<%= f.submit "Check", name: "check_button" %>
<%= f.submit "Submit", name: "submit_button" %>

def update
    @tape.update(tapes_params)
    if params[:save_button]
      redirect_to tapes_path, notice: "Saved!"
    elsif params[:check_button]
      redirect_to tapes_path, notice: "Checked!"
    elsif params[:submit_button]
        redirect_to tape_file_tape_path(@tape.id), notice: "Attachment Saved!"   
    end

我发现“save(false)”可以跳过验证，但我真的不知道如何将它集成到验证中。有人知道应该如何仅针对“submit_button”验证修改验证吗？

Answer 1

我很难在这里提供更多的代码修复，因为我不了解您的代码和域的整个用例，但您是否探索过 custom context with on 的使用？

如果我知道您希望仅在单击 submit_button 时验证运行，您可以使用代码探索更改。否则，我希望您了解如何根据您的确切需求对其进行自定义。

Model:
# You can change the context to be a custom one, 
# or use multiple e.g. on: [:update, :submitted]
validates :tape_files, attached: true, on: :submitted

def update
  # [1] Change to assign_attributes
  @tape.assign_attributes(tapes_params)

  if params[:submit_button] 
    # [2] This will run all validations without an explicit
    # context PLUS the `:submitted` ones.
    if @tape.save(context: :submitted)
      redirect_to tape_file_tape_path(@tape.id), notice: "Attachment Saved!"
    else
      render 'edit', notice: "Update failed"
    end
  else
    # [3] This will run all validations without an explicit context.
    if @tape.save
      if params[:save_button]
        redirect_to tapes_path, notice: "Saved!"
      elsif params[:check_button]
        redirect_to tapes_path, notice: "Checked!"
      else
        # [Optional] You may want to consider handling a default redirect here
      end
    else
      render 'edit', notice: "Update failed"
    end
  end
end

Answer 2

我解决了这个问题如下：

Model:
validates :tape_files, attached: true, on: :submit_button

Controller:
def update
 @tape.assign_attributes(tapes_params)   
  if params[:submit_button]     
     @tape.valid?(:submit_button)
     if !@tape.errors.any?
        redirect_to tape_file_tape_path(@tape.id), notice: "Attachment Saved!"
     else
        render 'edit', notice: "Update failed"
     end
    
  elsif params[:save_button]
      redirect_to tapes_path, notice: "Saved!"
  elsif params[:check_button]
      redirect_to tapes_path, notice: "Checked!"
  end
  @tape.save
end

如何验证取决于不同的提交按钮

How to validation depend on different submit buttons

ruby

validation

ruby-on-rails

rails-activestorage