django,python-2.7 , How can I resolve my variable's unexpected output?
How can I resolve my variable's unexpected output?
Question:
Tag: django,python-2.7
I have a variable in django named optional_message. If I debug the variable then it says Swenskt but when I try to print the variable on my page the following comes out: (u'Swenskt',) and the variable can't be tested for its length etc. What should I do if I only want the variable to be Swenskt and not (u'Swenskt',) ? Why is it a tuple when my other variable isn't?
The backend code is:
optional_message = form.cleaned_data['optional_message'],
optional_message_en = form.cleaned_data['optional_message_en']
if tutoring_language == 'en' and optional_message == '':
optional_message=optional_message_en
if tutoring_language == 'sv' and optional_message_en == '':
optional_message_en=optional_message
return render(request, "survey/confirm_survey.html", {
"context": course.context,
"tutoring_language": tutoring_language,
"trans_lang": trans_lang,
"start_date": _short_date_format(form.cleaned_data['start_date']) + ' ' + form.cleaned_data[
'start_date'].strftime("%Y"),
"end_date": _short_date_format(form.cleaned_data['end_date']) + ' ' + form.cleaned_data['end_date'].strftime(
"%Y"),
"email": request.user.email,
"form": form,
"admin_roles": _get_admin_roles(request, course.context),
"process_id": process_id,
"enable_progress_bar": str(settings.ENABLE_PROGRESS_BAR).lower(),
"extra_questions": form.cleaned_data['extra_questions'],
"optional_message": optional_message,
"optional_message_en": optional_message_en,
"template": template,
'subgroups': subgroup_dicts
})
My django template code is
{% if optional_message|length > 1 %}
<li>
{% trans "Svenska" %}:
</li>
<li>
{{ optional_message }}
</li>
<br/>
{% endif %}
Update
The following code fixed it, but why? Why is the variable a tuple when the other variable isn't?
{% if optional_message %}
<li>
{% trans "Svenska" %}:
</li>
<li>
{{ optional_message.0 }}
</li>
<br/>
{% endif %}
The form code is:
optional_message = forms.CharField(
widget=forms.Textarea(attrs={'rows':4, 'cols':15}),
label=_(u'Valfritt meddelande till studenter:'),
required=False,
)
Answer:
Remove the comma on your first line of code, this turns it into a tuple
optional_message = form.cleaned_data['optional_message'],
should be
optional_message = form.cleaned_data['optional_message']
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