Data only populates in last UITextField in UITableViewCell - rubymotion

Question

I have a tableview that has names and text fields in the accessoryView position. With the following UITableViewDelegate method, I am calling onEdit and it calls a UIPickerView. The problem is, if I have more then 1 cell, it only populates the data in the last uitextfield no matter which textfield I click on. How do I allow data to go into the text field I am editing?
def tableView(tableView, cellForRowAtIndexPath: indexPath)
#reuseIdentifier ||= "CELL_IDENTIFIER"
cell = tableView.dequeueReusableCellWithIdentifier(#reuseIdentifier) || begin
UITableViewCell.alloc.initWithStyle(UITableViewCellStyleDefault, reuseIdentifier:#reuseIdentifier)
end
picker = UIPickerView.alloc.initWithFrame([[0, self.view.frame.size.height / 2 + 50], [self.view.frame.size.width, self.view.frame.size.height]])
picker.delegate = self
picker.showsSelectionIndicator = true
#picker_field = UITextField.alloc.initWithFrame([[200,20],[150,40]])
#picker_field.placeholder = "Choose Location.."
#picker_field.delegate = self
#picker_field.inputView = picker
cell.textLabel.text = #list[indexPath.row]
cell.accessoryView = #picker_field
cell.selectedBackgroundView.backgroundColor = UIColor.redColor
#cell.selectionStyle = UITableViewCellSelectionStyleNone
cell
end
def pickerView(pickerView, numberOfRowsInComponent: component)
#choices_count
end
def pickerView(pickerView, titleForRow: row, forComponent: component)
#choices[row]
end
def pickerView(pickerView, didSelectRow: row, inComponent: component)
#picker_field.text = #choices[row]
#picker_field.resignFirstResponder
end

Answer 1

The solution came from putting more focus on the #picker_field becoming the firstResponder. Once I put an if statement stating the firstResponder it populates everytime.
def pickerView(pickerView, didSelectRow: row, inComponent: component)
if #picker_field = firstResponder
#picker_field.text = #choices[row]
#picker_field.resignFirstResponder
end
end