Looks like you've got survey_id as a variable in your URL query string, so
it will end up in request.get_vars. When you edit a record, the form also
includes a survey_id variable, which will end up in request.post_vars.
request.vars is a combination of get_vars and post_vars, so if they both
contain a variable with the same name, when merged into request.vars, those
values get combined into a list.
To avoid the problem, just use request.get_vars.survey_id in your code (or
use a variable name other than survey_id in your query string).
Anthony
On Thursday, January 30, 2014 8:08:29 AM UTC-5, Johann Spies wrote:
>
>
> In the following controller when edit a row and submit,
> request.vars.survey_id changes from '3' to ['3', '3']
> but not if I click on 'Back' without editing. Why?
>
> I had to use the following workaround:
>
> survey_id = request.vars.survey_id[0] if isinstance(survey_id, list)
> else request.vars.survey_id
>
>
> @auth.requires_login()
> def edit_survey():
> response.view = 'default/survey_create.html'
> survey_id = request.vars.survey_id
> if isinstance(survey_id, list):
> survey_id = survey_id[0]
> survey = db.survey[survey_id]
> db.questions.id.readable = False
> if survey_id:
> query = db.questions.survey_id== survey_id
> fields = [db.questions.question_number,
> db.questions.question,db.questions.answer_type,
> db.questions.id]
> questions = SQLFORM.grid(query,
> editable = True,
> deletable = True,
> create = True,
> searchable = False,
> maxtextlength = 100,
> orderby=db.questions.question_number)
> header = H3(T('%s for editing' % db.survey[survey_id].name))
> else:
> header = H3(T('No valid survey selected'))
> form = ''
> return dict(header = header, form = questions)
>
> Regards
> Johann
>
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