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Source code for sacrud_deform.common

#! /usr/bin/env python
# -*- coding: utf-8 -*-
# vim:fenc=utf-8
#
# Copyright © 2014 uralbash <root@uralbash.ru>
#
# Distributed under terms of the MIT license.

"""
Common
"""
from gettext import gettext as _

import colander
import json
import deform
from sqlalchemy import types as sa_types

from sacrud.common import pk_to_list
from sacrud.exttype import ChoiceType

from .types import _TYPES, _WIDGETS


[docs]class HTMLText(object): def __init__(self, text): self.text = text def __html__(self): try: return unicode(self.text) except NameError: # pragma: no cover return str(self.text) # pragma: no cover
[docs]def get_pk(obj): return json.dumps(pk_to_list(obj))
def _sa_row_to_choises(rows): return [(get_pk(ch), ch.__repr__()) for ch in rows] def _get_column_type_by_sa_type(sa_type): """ Returns the colander type that correspondents to the sqlalchemy type 'sa_type'. """ return _TYPES.get(sa_type) or colander.String def _get_widget_type_by_sa_type(sa_type): """ Returns the deform widget that correspondents to the sqlalchemy type 'sa_type'. """ return _WIDGETS.get(sa_type) or deform.widget.TextInputWidget
[docs]def get_validator(widget): return colander.All()
[docs]def get_column_title(col, translate=_): if 'verbose_name' in col.info: name = col.info['verbose_name'] else: name = col.name if 'sacrud_position' in col.info: if col.info['sacrud_position'] == 'inline': if 'verbose_name' in col.info: name = col.info['verbose_name'] else: name = col.sacrud_name return translate(name)
[docs]def get_column_type(col): if hasattr(col, 'type'): return col.type.__class__ return None
[docs]def get_column_description(col): if 'description' in col.info: return HTMLText(col.info['description']) return None
[docs]def get_column_default_value(col, obj): value = None col_type = get_column_type(col) if obj and hasattr(col, 'instance_name'): value = getattr(obj, col.instance_name) elif obj and hasattr(col, 'name'): try: value = getattr(obj, col.name, colander.null) except UnicodeEncodeError: value = colander.null if value is None: value = colander.null elif col_type == ChoiceType: value = value[0] if col_type == sa_types.Boolean: value = bool(value) return value
[docs]class MemoryTmpStore(dict): """ Instances of this class implement the :class:`deform.interfaces.FileUploadTempStore` interface"""
[docs] def preview_url(self, uid): return None
[docs]def get_widget(widget_type, values, mask, css_class, col): if widget_type == deform.widget.FileUploadWidget: tmpstore = MemoryTmpStore() return widget_type(tmpstore) return widget_type(values=values, mask=mask, col=col, mask_placeholder='_', css_class=css_class, )