Another example, on top of the example he put in his original post? A sequence is a generic python term for a collection of objects that can be iterated through. So a list (or array, if you don't grok the lingo) is a sequence, so is a tuple, so is a string - its a sequence of characters.
All these things are sequences: [ 'a', 'b', 'c', ] ( 'a', 'b', 'c', ) 'abc' and they all have identical output in the following code: for obj in seq: print obj In your question, you were passing the string 'choice753' as the initial value for your multi select widget. Multi select widgets want a sequence as an initial value, with each value in the sequence corresponding to a selected element (so you were saying 'the selected elements are those with values 'c', 'h', 'o', 'i', 'c', 'e', '7', '5' or '3'). You should have been passing a sequence of selected choices, so either [ 'choice753', ] or ( 'choice753', ) (note the trailing commas). If you look closely at Bruno's reply, this is exactly what he told you. Cheers Tom On Fri, Jun 18, 2010 at 3:13 PM, Jeff Green <jeffhg2...@gmail.com> wrote: > Can you clarify what you mean by sequence. It would be appreciated if you > can provide me of an example which might help me to understand how to > implement it. > > Thanks, > Jeff > > On Fri, Jun 18, 2010 at 8:44 AM, bruno desthuilliers > <bruno.desthuilli...@gmail.com> wrote: >> >> >> On 18 juin, 15:03, Jeff Green <jeffhg2...@gmail.com> wrote: >> > I have been trying unsuccessfully to select the initial value of a >> > multi select drop down. >> > >> > I was wondering what I am missing as to why this does not seem to be >> > working. >> > >> > Here is a snippet of my code >> > >> > self.fields[config.ConfigurationName] = forms.MultipleChoiceField( >> > choices=choicelist, >> > initial='choice753', >> > required=False) >> > >> >> A MultipleChoiceField works with a sequence, not with a single >> element, so passing the appropriate sequence as initial value might >> help. >> >> self.fields[config.ConfigurationName] = forms.MultipleChoiceField( >> choices=choicelist, >> initial=['choice753'], # use >> a list here >> required=False) >> >> >> >> PS 1 : not tested but IIRC that's how I always initialised these >> fields. >> >> PS 2 : In case you wonder why it didn't raise an exception with a >> single string as initial value, remember that strings are sequences >> too - so what the MultipleChoiceField tried to use was in fact ['c', >> 'h', 'o', 'i', 'c', 'e', '7', '5', '3'] !-) >> >> HTH >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Django users" group. >> To post to this group, send email to django-us...@googlegroups.com. >> To unsubscribe from this group, send email to >> django-users+unsubscr...@googlegroups.com. >> For more options, visit this group at >> http://groups.google.com/group/django-users?hl=en. >> > > -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To post to this group, send email to django-us...@googlegroups.com. > To unsubscribe from this group, send email to > django-users+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/django-users?hl=en. > -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-us...@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
