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import os
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from django import forms
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from apps.main.models import Device, Experiment
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from .models import JARSConfiguration, JARSfilter
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from .widgets import SpectralWidget
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class JARSConfigurationForm(forms.ModelForm):
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def __init__(self, *args, **kwargs):
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super(JARSConfigurationForm, self).__init__(*args, **kwargs)
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instance = getattr(self, 'instance', None)
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if instance and instance.pk:
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devices = Device.objects.filter(device_type__name='jars')
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if instance.experiment:
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experiments = Experiment.objects.filter(pk=instance.experiment.id)
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self.fields['experiment'].widget.choices = [(experiment.id, experiment) for experiment in experiments]
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self.fields['device'].widget.choices = [(device.id, device) for device in devices]
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#self.fields['spectral'].widget = SpectralWidget()
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self.fields['spectral_number'].widget.attrs['readonly'] = True
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self.fields['spectral'].widget = SpectralWidget()
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#-------------JARS Configuration needs an Experiment-----------------
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def clean(self):
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cleaned_data = super(JARSConfigurationForm, self).clean()
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experiment = cleaned_data.get('experiment')
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if experiment == None:
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msg = "Error: Jars Configuration needs an Experiment"
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self.add_error('experiment', msg)
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class Meta:
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model = JARSConfiguration
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exclude = ('type', 'parameters', 'status', 'filter_parms')
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class JARSfilterForm(forms.ModelForm):
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def __init__(self, *args, **kwargs):
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super(JARSfilterForm, self).__init__(*args, **kwargs)
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instance = getattr(self, 'instance', None)
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self.fields['fch_decimal'].widget.attrs['readonly'] = True
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class Meta:
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model = JARSfilter
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exclude = ('type', 'parameters', 'status')
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class ExtFileField(forms.FileField):
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"""
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Same as forms.FileField, but you can specify a file extension whitelist.
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>>> from django.core.files.uploadedfile import SimpleUploadedFile
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>>>
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>>> t = ExtFileField(ext_whitelist=(".pdf", ".txt"))
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>>>
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>>> t.clean(SimpleUploadedFile('filename.pdf', 'Some File Content'))
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>>> t.clean(SimpleUploadedFile('filename.txt', 'Some File Content'))
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>>>
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>>> t.clean(SimpleUploadedFile('filename.exe', 'Some File Content'))
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Traceback (most recent call last):
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...
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ValidationError: [u'Not allowed filetype!']
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"""
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def __init__(self, *args, **kwargs):
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extensions = kwargs.pop("extensions")
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self.extensions = [i.lower() for i in extensions]
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super(ExtFileField, self).__init__(*args, **kwargs)
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def clean(self, *args, **kwargs):
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data = super(ExtFileField, self).clean(*args, **kwargs)
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filename = data.name
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ext = os.path.splitext(filename)[1]
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ext = ext.lower()
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if ext not in self.extensions:
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raise forms.ValidationError('Not allowed file type: %s' % ext)
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class JARSImportForm(forms.Form):
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#file_name = ExtFileField(extensions=['.racp', '.json', '.dat'])
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file_name = ExtFileField(extensions=['.json'])
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