98 lines
3.0 KiB
Python
98 lines
3.0 KiB
Python
from __future__ import absolute_import
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import os
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import tempfile
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import re
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import datetime
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try:
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from cStringIO import StringIO
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except ImportError:
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from StringIO import StringIO
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from django.db import models
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from django.utils.translation import ugettext_lazy as _
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from django.core import management
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from .literals import (FIXTURE_TYPES_CHOICES, FIXTURE_FILE_TYPE, COMMAND_LOADDATA)
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from .managers import BootstrapSetupManager
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from .classes import BootstrapModel, FixtureMetadata
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class BootstrapSetup(models.Model):
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"""
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Model to store the fixture for a pre configured setup.
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"""
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name = models.CharField(max_length=128, verbose_name=_(u'name'), unique=True)
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description = models.TextField(verbose_name=_(u'description'), blank=True)
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fixture = models.TextField(verbose_name=_(u'fixture'), help_text=_(u'These are the actual database structure creation instructions.'))
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type = models.CharField(max_length=16, verbose_name=_(u'type'), choices=FIXTURE_TYPES_CHOICES)
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created = models.DateTimeField(verbose_name=_('creation date and time'), default=lambda: datetime.datetime.now(), editable=False)
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objects = BootstrapSetupManager()
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def __unicode__(self):
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return self.name
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def get_extension(self):
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"""
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Return the fixture file extension based on the fixture type.
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"""
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return FIXTURE_FILE_TYPE[self.type]
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def execute(self):
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"""
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Read a bootstrap's fixture and create the corresponding model
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instances based on it.
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"""
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BootstrapModel.check_for_data()
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handle, filepath = tempfile.mkstemp()
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# Just need the filepath, close the file description
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os.close(handle)
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filepath = os.path.extsep.join([filepath, self.get_extension()])
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with open(filepath, 'w') as file_handle:
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file_handle.write(self.cleaned_fixture)
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content = StringIO()
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management.call_command(COMMAND_LOADDATA, filepath, verbosity=0, stderr=content)
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content.seek(0, os.SEEK_END)
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if content.tell():
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content.seek(0)
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raise Exception(content.readlines()[-2])
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os.unlink(filepath)
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def compress(self):
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"""
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Return a compacted and compressed version of the BootstrapSetup
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instance, meant for download.
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"""
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return ''
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@property
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def cleaned_fixture(self):
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"""
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Return the bootstrap setup's fixture without comments.
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"""
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return re.sub(re.compile('#.*?\n'), '', self.fixture)
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def get_metadata_string(self):
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"""
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Return all the metadata for the current bootstrap fixture.
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"""
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return FixtureMetadata.generate_all(self)
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def save(self, *args, **kwargs):
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self.fixture = '%s\n\n%s' % (
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self.get_metadata_string(),
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self.cleaned_fixture
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)
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return super(BootstrapSetup, self).save(*args, **kwargs)
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class Meta:
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verbose_name = _(u'bootstrap setup')
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verbose_name_plural = _(u'bootstrap setups')
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ordering = ['name']
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