DjangoがIntegrityErrorを発生させました：ユニットテストでUNIQUE制約が失敗しました

Question

test.pyまたはシェルインターフェイスでTimesheetオブジェクトを作成しようとすると、整合性エラーが発生します。しかし、私はサーブされたhtmlインターフェイスを介してオブジェクトを作成することはできます。以下のエラー、モデル、ビュー、フォーム。

ご意見やアドバイスをいただければ幸いです。

エラー：

Traceback (most recent call last): 
    File "<console>", line 5, in <module> 
    File "/Users/Development/venvs/venv-2017-01/lib/python2.7/site-packages/django/db/models/manager.py", line 85, in manager_method 
    return getattr(self.get_queryset(), name)(*args, **kwargs) 
    File "/Users/Development/venvs/venv-2017-01/lib/python2.7/site-packages/django/db/models/query.py", line 399, in create 
    obj.save(force_insert=True, using=self.db) 
    File "/Users/Development/et/timesheets/models.py", line 222, in save 
    return super(Timesheet, self).save(*args, **kwargs) 
    File "/Users/Development/venvs/venv-2017-01/lib/python2.7/site-packages/django/db/models/base.py", line 796, in save 
    force_update=force_update, update_fields=update_fields) 
    File "/Users/Development/venvs/venv-2017-01/lib/python2.7/site-packages/django/db/models/base.py", line 824, in save_base 
    updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields) 
    File "/Users/Development/venvs/venv-2017-01/lib/python2.7/site-packages/django/db/models/base.py", line 908, in _save_table 
    result = self._do_insert(cls._base_manager, using, fields, update_pk, raw) 
    File "/Users/Development/venvs/venv-2017-01/lib/python2.7/site-packages/django/db/models/base.py", line 947, in _do_insert 
    using=using, raw=raw) 
    File "/Users/Development/venvs/venv-2017-01/lib/python2.7/site-packages/django/db/models/manager.py", line 85, in manager_method 
    return getattr(self.get_queryset(), name)(*args, **kwargs) 
    File "/Users/Development/venvs/venv-2017-01/lib/python2.7/site-packages/django/db/models/query.py", line 1045, in _insert 
    return query.get_compiler(using=using).execute_sql(return_id) 
    File "/Users/Development/venvs/venv-2017-01/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 1054, in execute_sql 
    cursor.execute(sql, params) 
    File "/Users/Development/venvs/venv-2017-01/lib/python2.7/site-packages/django/db/backends/utils.py", line 79, in execute 
    return super(CursorDebugWrapper, self).execute(sql, params) 
    File "/Users/Development/venvs/venv-2017-01/lib/python2.7/site-packages/django/db/backends/utils.py", line 64, in execute 
    return self.cursor.execute(sql, params) 
    File "/Users/Development/venvs/venv-2017-01/lib/python2.7/site-packages/django/db/utils.py", line 94, in __exit__ 
    six.reraise(dj_exc_type, dj_exc_value, traceback) 
    File "/Users/Development/venvs/venv-2017-01/lib/python2.7/site-packages/django/db/backends/utils.py", line 64, in execute 
    return self.cursor.execute(sql, params) 
    File "/Users/Development/venvs/venv-2017-01/lib/python2.7/site-packages/django/db/backends/sqlite3/base.py", line 337, in execute 
    return Database.Cursor.execute(self, query, params) 
IntegrityError: UNIQUE constraint failed: timesheets_timesheet.id 

モデル：

class Timesheet(models.Model): 
    owner = models.ForeignKey(User, editable=False) 

    employee = models.CharField(
     max_length=30, 
     help_text='Name of the employee that did the work' 
    ) 

    company = models.CharField(
     max_length=30, 
     help_text = 'Name of the company that will pay for the invoice' 
    ) 

    date = models.DateField(help_text='Week-End Date (Sunday)', validators=[validate_sunday]) 

    ...Other model fields... 

    secret = models.UUIDField(default=uuid.uuid4, editable=False, unique=True) 


    ...Other model functions... 

    def save(self, *args, **kwargs): 
     self.full_clean() 

     if self.pk is None: 
      super(Timesheet, self).save(*args, **kwargs) 
      self.create_time_entries() 
     else: 
      self.update_hours() 
     return super(Timesheet, self).save(*args, **kwargs) 

再生回数：

class TimesheetCreate(LoginRequiredMixin, CreateView): 
    model = Timesheet 
    template_name = 'timesheet.html' 
    form_class = TimeSheetForm 

    def form_valid(self, form): 
     form.instance.owner = self.request.user 
     return super(TimesheetCreate, self).form_valid(form) 

    def get_success_url(self): 
     return reverse('TimeEntryUpdate', args=(self.object.pk,)) 

フォーム：あなたが二回saveメソッド呼び出している

class TimeSheetForm(forms.ModelForm): 
    employee = forms.CharField(label='Name', 
           widget=forms.TextInput(attrs={'class' : 'form-control', 'placeholder' : 'Your Name'})) 
    company = forms.CharField(label='Company', 
           widget=forms.TextInput(attrs={'class' : 'form-control', 'placeholder' : 'Company'})) 
    date = forms.DateField(label='Date', 
          input_formats=date_formats, 
          widget=forms.DateInput(format='%d %B, %Y', attrs={'class' : 'form-control datepicker-sunday-only', 'placeholder' : 'Week-end Date (Sunday)'}), 
          error_messages={'invalid': 'Date must be a Sunday!'}) 

    class Meta: 
     model = Timesheet 
     fields = ['employee', 'company', 'date'] 
     exclude = ['owner', 'secret', 'employer_name', 'employer_email'] 

    def __init__(self, *args, **kwargs): 
     super(TimeSheetForm, self).__init__(*args, **kwargs) 
     instance = getattr(self, 'instance', None) 
     if instance.status in ('1','2','3',) : 
      self.fields['employee'].widget.attrs['readonly'] = True 
      self.fields['company'].widget.attrs['readonly'] = True 
      self.fields['date'].widget.attrs['readonly'] = True 

Answer 1

、あなたの方法を保存、編集、

def save(self, *args, **kwargs): 
    self.full_clean() 

    if self.pk is None: 
     super(Timesheet, self).save(*args, **kwargs) 
     self.create_time_entries() 
    else: 
     self.update_hours() 
     super(Timesheet, self).save(*args, **kwargs)