Hopefully this is a softball question. Say
I have a table "meals" which has "entree_id" and
"dessert_id".
I have parent tables "entrees" and "desserts".
In my data entry controller, I have a new_meal()
action and a create_meal() action.
new_meal loads @entrees and @desserts, and new_meal.rhtml
uses them in a couple of form.collection_select() calls
so I can generate select boxes.
The common paradigm seems to be:
def new_meal
<create new meal object, fill any appropriate fields>
<set up other vars needed for view, as noted above>
end
def create_meal
@meal = Meal.new(params[:meal])
if @meal.save
flash[:notice] = "yay"
redirect_to :action => index
else
render :action => 'new_meal'
end
end
My problem is that if I do the above and incorrectly fill out
the form, then the "render" line is called and fails because
"new_mail.rhtml" now has nil values for the vars that were
supposed to be set up in the new_meal action.
If I instead change "render" to "redirect_to", then the form
generates fine, but apparently error_messages_for() no longer
has anything to report, so I can't tell users what they did wrong.
What am I missing? This task has got to be about as
common as dirt...
-glenn
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