Hi John,
each element in the choices is a two elements tuple. first one is
the real data will be saved in the database and second one will
present on the form. therefore, the max_length of 'type' field must be
modified to fit the first element in the choices tuple. Plz see the
following code, i change the first element and the type field's
max_length.
REPORT_CHOICES = (
('BR', 'Bug Report'),
('UN', 'Unknown Problem'),
)
type = models.CharField(max_length=2, choices=REPORT_CHOICES)
ps: you can also google some pages which use the IntegerField to
save the choices.
BR
Titan
On Dec 14, 9:04 am, john doe <[email protected]> wrote:
> Dear all,
> I am making a small Django app for a bug tracking system to get my
> head round this awesome framework. I am facing a problem wherein when
> accepting input via a form generated by models. The classes are listed below
> (not in its entirety).
>
> [code]
> class Report(models.Model):
> #type = models.CharField(max_length=200)
> REPORT_CHOICES = (
> ('BR: Bug Report', 'Bug Report'),
> ('UN: Unknown Problem', 'Unknown Problem'),
> )
> type = models.CharField(max_length=1, choices=REPORT_CHOICES)
> submitter = models.CharField(max_length=200, default='Anonymous')
> ...
> ...
> class Incident(models.Model):
> report = models.ForeignKey(Report)
> INCIDENT_CHOICES = (
> ('SF: Seg Fault', 'SegFault'),
> ('ML: Memory Leak', 'Memory Leak'),
> ('MC: Memory Corruption', 'Memory Corruption'),
> )
> type = models.CharField(max_length=1, choices=INCIDENT_CHOICES)
> #description of the incident
> description = models.CharField(max_length=20000)
> ...
> ...
> [/code]
>
> I have generated a form wherein a user can enter a report, and multiple
> incidents related to the report. When I use the function to accept the
> input, not actually processing anything I get "Select a valid choice. SF:
> Seg Fault is not one of the available choices." .
>
> The HTML page code looks like below:
> [code]
> <h2>Submit a report</h2>
> {% if new_report_form %}
> <ul>
> <form action="/submit_new_report/" method="post">
> {{ new_report_form.non_field_errors }}
> <div class="reportType">
> {{ new_report_form.type.errors }}
> <label for="id_reporttype">Type of Report:</label>
> {{ new_report_form.type }}
> </div>
> <div class="incidentType">
> {{ new_incident_form.type.errors }}
> <label for="id_incidenttype">Type of Incident:</label>
> {{ new_incident_form.type }}
> </div>
> ...
> ...
> [/code]
>
> The form.is_valid() call is basically saying that there's a problem with
> validating the form input because the choice selected for the incident-type
> is not valid. However, in the model description, the choices are clearly
> valid and in the form I have different identifiers too. Can someone please
> provide some advice as to why this might be happening.
>
> Thanks in advance.
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