author | Stephanie Marcu <stephanie.marcu@logilab.fr> |
Fri, 22 Oct 2010 14:54:24 +0200 | |
changeset 6592 | 4dad0ec0a44f |
parent 5460 | 52ae8f68d9e2 |
child 7152 | 39c1ffc7d93f |
permissions | -rw-r--r-- |
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# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved. |
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# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr |
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3 |
# |
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4 |
# This file is part of CubicWeb. |
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5 |
# |
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parents:
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# CubicWeb is free software: you can redistribute it and/or modify it under the |
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# terms of the GNU Lesser General Public License as published by the Free |
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# Software Foundation, either version 2.1 of the License, or (at your option) |
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# any later version. |
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10 |
# |
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# CubicWeb is distributed in the hope that it will be useful, but WITHOUT |
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more |
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14 |
# details. |
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# |
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# You should have received a copy of the GNU Lesser General Public License along |
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# with CubicWeb. If not, see <http://www.gnu.org/licenses/>. |
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"""an helper class to display CubicWeb schema using ureports |
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||
20 |
""" |
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__docformat__ = "restructuredtext en" |
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_ = unicode |
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from logilab.common.ureports import Section, Title, Table, Link, Span, Text |
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from yams.schema2dot import CARD_MAP |
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from yams.schema import RelationDefinitionSchema |
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from operator import attrgetter |
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TYPE_GETTER = attrgetter('type') |
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I18NSTRINGS = [_('read'), _('add'), _('delete'), _('update'), _('order')] |
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0 | 35 |
class SchemaViewer(object): |
36 |
"""return an ureport layout for some part of a schema""" |
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def __init__(self, req=None, encoding=None): |
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self.req = req |
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if req is not None: |
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req.add_css('cubicweb.schema.css') |
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if encoding is None: |
0 | 42 |
encoding = req.encoding |
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self._ = req._ |
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else: |
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encoding = 'ascii' |
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self._ = unicode |
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self.encoding = encoding |
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# no self.req managements |
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def may_read(self, rdef, action='read'): |
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"""Return true if request user may read the given schema. |
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Always return True when no request is provided. |
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""" |
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if self.req is None: |
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return True |
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return rdef.may_have_permission(action, self.req) |
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def format_eschema(self, eschema): |
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text = eschema.type |
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if self.req is None: |
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return Text(text) |
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return Link(self.req.build_url('cwetype/%s' % eschema), text) |
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def format_rschema(self, rschema, label=None): |
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if label is None: |
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label = rschema.type |
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if self.req is None: |
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return Text(label) |
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return Link(self.req.build_url('cwrtype/%s' % rschema), label) |
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# end of no self.req managements |
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1998
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def visit_schema(self, schema, display_relations=0, skiptypes=()): |
0 | 75 |
"""get a layout for a whole schema""" |
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title = Title(self._('Schema %s') % schema.name, |
0 | 77 |
klass='titleUnderline') |
78 |
layout = Section(children=(title,)) |
|
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esection = Section(children=(Title(self._('Entities'), |
0 | 80 |
klass='titleUnderline'),)) |
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layout.append(esection) |
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1132 | 82 |
eschemas = [eschema for eschema in schema.entities() |
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if not (eschema.final or eschema in skiptypes)] |
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for eschema in sorted(eschemas, key=TYPE_GETTER): |
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esection.append(self.visit_entityschema(eschema, skiptypes)) |
0 | 86 |
if display_relations: |
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title = Title(self._('Relations'), klass='titleUnderline') |
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rsection = Section(children=(title,)) |
0 | 89 |
layout.append(rsection) |
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relations = [rschema for rschema in sorted(schema.relations(), key=TYPE_GETTER) |
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if not (rschema.final or rschema.type in skiptypes)] |
0 | 92 |
keys = [(rschema.type, rschema) for rschema in relations] |
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for key, rschema in sorted(keys, cmp=(lambda x, y: cmp(x[1], y[1]))): |
0 | 94 |
relstr = self.visit_relationschema(rschema) |
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rsection.append(relstr) |
|
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return layout |
|
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def _entity_attributes_data(self, eschema): |
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_ = self._ |
0 | 100 |
data = [_('attribute'), _('type'), _('default'), _('constraints')] |
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attributes = sorted(eschema.attribute_definitions(), cmp=(lambda x, y: cmp(x[0].type, y[0].type))) |
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for rschema, aschema in attributes: |
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rdef = eschema.rdef(rschema) |
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if not self.may_read(rdef): |
0 | 105 |
continue |
106 |
aname = rschema.type |
|
107 |
if aname == 'eid': |
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continue |
0 | 109 |
data.append('%s (%s)' % (aname, _(aname))) |
110 |
data.append(_(aschema.type)) |
|
111 |
defaultval = eschema.default(aname) |
|
112 |
if defaultval is not None: |
|
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default = self.to_string(defaultval) |
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elif rdef.cardinality[0] == '1': |
0 | 115 |
default = _('required field') |
116 |
else: |
|
117 |
default = '' |
|
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data.append(default) |
|
119 |
constraints = rschema.rproperty(eschema.type, aschema.type, |
|
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'constraints') |
|
121 |
data.append(', '.join(str(constr) for constr in constraints)) |
|
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return data |
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124 |
||
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def stereotype(self, name): |
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return Span((' <<%s>>' % name,), klass='stereotype') |
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def visit_entityschema(self, eschema, skiptypes=()): |
0 | 129 |
"""get a layout for an entity schema""" |
130 |
etype = eschema.type |
|
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layout = Section(children=' ', klass='clear') |
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layout.append(Link(etype,' ' , id=etype)) # anchor |
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title = self.format_eschema(eschema) |
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boxchild = [Section(children=(title,), klass='title')] |
0 | 135 |
data = [] |
136 |
data.append(Section(children=boxchild, klass='box')) |
|
137 |
data.append(Section(children='', klass='vl')) |
|
138 |
data.append(Section(children='', klass='hl')) |
|
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t_vars = [] |
|
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rels = [] |
|
141 |
first = True |
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142 |
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143 |
rel_defs = sorted(eschema.relation_definitions(), |
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144 |
cmp=(lambda x, y: cmp((x[0].type, x[0].cardinality), |
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145 |
(y[0].type, y[0].cardinality)))) |
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146 |
for rschema, targetschemas, role in rel_defs: |
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stop using meta attribute from yams schema. Use instead sets defining meta relations and another defining schema types. Refactor various schema view based on this
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if rschema.type in skiptypes: |
0 | 148 |
continue |
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for oeschema in sorted(targetschemas, key=TYPE_GETTER): |
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rdef = rschema.role_rdef(eschema, oeschema, role) |
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151 |
if not self.may_read(rdef): |
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continue |
0 | 153 |
label = rschema.type |
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154 |
if role == 'subject': |
0 | 155 |
cards = rschema.rproperty(eschema, oeschema, 'cardinality') |
156 |
else: |
|
157 |
cards = rschema.rproperty(oeschema, eschema, 'cardinality') |
|
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cards = cards[::-1] |
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label = '%s %s %s' % (CARD_MAP[cards[1]], label, |
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CARD_MAP[cards[0]]) |
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161 |
rlink = self.format_rschema(rschema, label) |
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162 |
elink = self.format_eschema(oeschema) |
0 | 163 |
if first: |
164 |
t_vars.append(Section(children=(elink,), klass='firstvar')) |
|
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rels.append(Section(children=(rlink,), klass='firstrel')) |
|
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first = False |
|
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else: |
|
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t_vars.append(Section(children=(elink,), klass='var')) |
|
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rels.append(Section(children=(rlink,), klass='rel')) |
|
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data.append(Section(children=rels, klass='rels')) |
|
171 |
data.append(Section(children=t_vars, klass='vars')) |
|
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layout.append(Section(children=data, klass='entityAttributes')) |
|
173 |
return layout |
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|
0 | 175 |
def visit_relationschema(self, rschema, title=True): |
176 |
"""get a layout for a relation schema""" |
|
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_ = self._ |
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178 |
if title: |
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title = self.format_rschema(rschema) |
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stereotypes = [] |
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if rschema.meta: |
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stereotypes.append('meta') |
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if rschema.symmetric: |
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184 |
stereotypes.append('symmetric') |
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185 |
if rschema.inlined: |
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186 |
stereotypes.append('inlined') |
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187 |
title = Section(children=(title,), klass='title') |
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188 |
if stereotypes: |
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189 |
title.append(self.stereotype(','.join(stereotypes))) |
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layout = Section(children=(title,), klass='schema') |
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191 |
else: |
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192 |
layout = Section(klass='schema') |
0 | 193 |
data = [_('from'), _('to')] |
194 |
schema = rschema.schema |
|
195 |
rschema_objects = rschema.objects() |
|
196 |
if rschema_objects: |
|
197 |
# might be empty |
|
4087 | 198 |
properties = [p for p in RelationDefinitionSchema.rproperty_defs(rschema_objects[0]) |
0 | 199 |
if not p in ('cardinality', 'composite', 'eid')] |
200 |
else: |
|
201 |
properties = [] |
|
202 |
data += [_(prop) for prop in properties] |
|
203 |
cols = len(data) |
|
204 |
done = set() |
|
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205 |
for subjtype, objtypes in sorted(rschema.associations()): |
0 | 206 |
for objtype in objtypes: |
207 |
if (subjtype, objtype) in done: |
|
208 |
continue |
|
209 |
done.add((subjtype, objtype)) |
|
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if rschema.symmetric: |
0 | 211 |
done.add((objtype, subjtype)) |
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212 |
data.append(self.format_eschema(schema[subjtype])) |
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data.append(self.format_eschema(schema[objtype])) |
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214 |
rdef = rschema.rdef(subjtype, objtype) |
0 | 215 |
for prop in properties: |
4087 | 216 |
val = getattr(rdef, prop) |
0 | 217 |
if val is None: |
218 |
val = '' |
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219 |
elif prop == 'constraints': |
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220 |
val = ', '.join([c.restriction for c in val]) |
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221 |
elif isinstance(val, dict): |
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222 |
for key, value in val.iteritems(): |
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223 |
if isinstance(value, (list, tuple)): |
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224 |
val[key] = ', '.join(sorted( str(v) for v in value)) |
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225 |
val = str(val) |
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226 |
|
0 | 227 |
elif isinstance(val, (list, tuple)): |
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228 |
val = sorted(val) |
0 | 229 |
val = ', '.join(str(v) for v in val) |
230 |
elif val and isinstance(val, basestring): |
|
231 |
val = _(val) |
|
232 |
else: |
|
233 |
val = str(val) |
|
234 |
data.append(Text(val)) |
|
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table = Table(cols=cols, rheaders=1, children=data, klass='listing') |
0 | 236 |
layout.append(Section(children=(table,), klass='relationDefinition')) |
237 |
layout.append(Section(children='', klass='clear')) |
|
238 |
return layout |
|
239 |
||
240 |
def to_string(self, value): |
|
241 |
"""used to converte arbitrary values to encoded string""" |
|
242 |
if isinstance(value, unicode): |
|
243 |
return value.encode(self.encoding, 'replace') |
|
244 |
return str(value) |