在Rails 4中未设置实例变量

Question

I'm having a problem with a Rails 4 app that used to work perfectly fine. Now, an instance variable remains nil after being set. In the controller, I have the following code:

def create
  @reportdate = Reportdate.new(reportdate_params)
  weekly_summary = getSOData(@reportdate.start_date, @reportdate.end_date)
  @reportdate.questions = weekly_summary[:question_ids]
  @reportdate.num_answers = weekly_summary[:answers]
  @reportdate.views = weekly_summary[:views]
  respond_to do |format|
  if @reportdate.save
  ...

When I run this, @reportdate.num_answers and @reportdate.views gets set, but @reportdate.questions remains nil .

When I run it in the debugger, I verified that weekly_summary[:question_ids] equals

[21636454, 21539706, 21611661, 21632781, 21583630, 21614059, 21634704, 21615609, 21595829, 21564079, 21587196, 21537280] .

This used to work before and I have no idea why it's not working now.

Answer 1

def create
  @reportdate = Reportdate.new(reportdate_params)
  weekly_summary = getSOData(@reportdate.start_date, @reportdate.end_date)

  @reportdate.questions   = weekly_summary[:question_ids]
  @reportdate.num_answers = weekly_summary[:answers]
  @reportdate.views       = weekly_summary[:views]

  respond_to do |format|
      if @reportdate.save
         ...

I think the answer is outside the scope of your controller. I changed the above to reflect the data used in the action, and as you can see, the main ways you receive data are from the weekly_summary method

I would check these:

1. Is weekly_summary populating the variable correctly?
2. Is .questions an attribute of the Reportdate object? If not, do you have an attr_accessor ?
3. Your Reportdate object needs to be CamelCase - should be ReportDate (this could cause an issue)
4. As mentioned in the comments, your model may prevent saving due to validation issues.

---

All this points to some other part of the app having issues

Could you post your Reportdate model and weekly_summary code please?

Answer 2

Thank you all for responding. The problem was that I was setting the instance variable incorrectly. I didn't think I made a change in that part of the code, but it was impossible to work the way it was written, so I must have. It is all fixed and working now.