CODEWITHSUNDEEP
validationerror-handlingruby-on-rails-3.2
Katie M
Katie M

Reputation: 1131

Rails 3.2 - Validations - Redirect To Back with Error

I need help with error validations/redirects....

If I use format.html {redirect_to :back, flash: {error: "Oops, something went wrong. Please try again."} the error message works, but it does not hold the form data so the user needs to re-input and doesn't know which fields were incorrect.

The format.xml {render :xml => @award.errors, :status => :unprocessable_entity} line redirects to back, but it doesn't show any errors.

I would like to see which fields are incorrect, with their validation messages intact. Please help with syntax. Thanks in advance!

respond_to do |format|
  if @award.save
    format.html { redirect_to(new_award_path, :notice => 'Thank you for your nomination!') }
    format.xml  { render :xml => @award, :status => :created, :location => @award }
  else
    format.html {redirect_to :back}
    #format.html {redirect_to :back, flash: {error: "Oops, something went wrong. Please try again."}}
    format.xml {render :xml => @award.errors, :status => :unprocessable_entity}
  end
end

UPDATE to include more detail:

I'm using 2 different forms for this create method. Each form has a hidden field to set a boolean value, then I do stuff in my controller based on that hidden condition. If there are errors, I need to redirect to the correct form, hold its values, and show the appropriate error fields. Something like this:

respond_to do |format|
      if @award.save
        format.html { redirect_to(new_award_path, :notice => 'Thank you for your nomination!') }
        format.xml  { render :xml => @award, :status => :created, :location => @award }
      else
        if boolean_field == true
            format.html { render action: "true_form" }
            format.xml {render :xml => @award.errors, :status => :unprocessable_entity}
        else
            format.html { render action: "false_form" }
            format.xml {render :xml => @award.errors, :status => :unprocessable_entity}
        end
      end
end

When I try it this way, errors work, but it always goes back to the true_form, even if I started on the false_form. So, it's like it's ignoring the boolean_field condition... make sense?

Upvotes: 0

Views: 1718

Answers (1)

Arjan
Arjan

Reputation: 6274

The trick is not redirecting when there are errors, but simply rendering the view again.

respond_to do |format|
  if @award.save
    format.html { redirect_to(new_award_path, notice: 'Thank you for your nomination!') }
    format.xml { render xml: @award, status: :created, location: @award }
  else
    format.html { render action: 'new' }
    format.xml { render json: @award.errors, status: :unprocessable_entity }
  end
end

Upvotes: 2

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