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1 from django.core.management.base import LabelCommand, CommandError |
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2 from django.utils.encoding import force_unicode |
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3 |
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4 class Command(LabelCommand): |
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5 help = "Outputs the specified model as a form definition to the shell." |
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6 args = "[app.model]" |
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7 label = 'application name and model name' |
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8 |
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9 requires_model_validation = True |
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10 can_import_settings = True |
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11 |
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12 def handle_label(self, label, **options): |
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13 return describe_form(label) |
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14 |
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15 |
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16 def describe_form(label, fields=None): |
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17 """ |
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18 Returns a string describing a form based on the model |
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19 """ |
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20 from django.db.models.loading import get_model |
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21 try: |
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22 app_name, model_name = label.split('.')[-2:] |
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23 except (IndexError, ValueError): |
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24 raise CommandError("Need application and model name in the form: appname.model") |
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25 model = get_model(app_name, model_name) |
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26 |
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27 opts = model._meta |
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28 field_list = [] |
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29 for f in opts.fields + opts.many_to_many: |
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30 if not f.editable: |
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31 continue |
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32 if fields and not f.name in fields: |
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33 continue |
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34 formfield = f.formfield() |
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35 if not '__dict__' in dir(formfield): |
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36 continue |
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37 attrs = {} |
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38 valid_fields = ['required', 'initial', 'max_length', 'min_length', 'max_value', 'min_value', 'max_digits', 'decimal_places', 'choices', 'help_text', 'label'] |
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39 for k,v in formfield.__dict__.items(): |
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40 if k in valid_fields and v != None: |
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41 # ignore defaults, to minimize verbosity |
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42 if k == 'required' and v: |
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43 continue |
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44 if k == 'help_text' and not v: |
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45 continue |
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46 if k == 'widget': |
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47 attrs[k] = v.__class__ |
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48 elif k in ['help_text', 'label']: |
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49 attrs[k] = force_unicode(v).strip() |
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50 else: |
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51 attrs[k] = v |
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52 |
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53 params = ', '.join(['%s=%r' % (k, v) for k, v in attrs.items()]) |
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54 field_list.append(' %(field_name)s = forms.%(field_type)s(%(params)s)' % { 'field_name': f.name, |
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55 'field_type': formfield.__class__.__name__, |
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56 'params': params }) |
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57 |
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58 return ''' |
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59 from django import forms |
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60 from %(app_name)s.models import %(object_name)s |
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61 |
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62 class %(object_name)sForm(forms.Form): |
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63 %(field_list)s |
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64 ''' % { 'app_name': app_name, 'object_name': opts.object_name, 'field_list': '\n'.join(field_list) } |