diff --git a/lib/nulib/python/nulib/base.py b/lib/nulib/python/nulib/base.py
index 075b77f..6b28271 100644
--- a/lib/nulib/python/nulib/base.py
+++ b/lib/nulib/python/nulib/base.py
@@ -36,7 +36,36 @@ mydir, myname = path.split(myself)
 
 # Fonctions diverses
 
+_undef = object()
 class Undef(object):
+    def sa(self, value, kw, name, default=_undef):
+        """si value est Undef, récupérer la valeur avec le nom court name dans kw
+        """
+        if default is _undef: default = self
+        if value is self and name is not None: value = kw.pop(name, self)
+        if value is self: value = default
+        return value
+
+    def __nonzero__(self):
+        return False
+    def __len__(self):
+        return 0
+    def __lt__(self, other):
+        if other: return True
+        else: return False
+    def __le__(self, other):
+        return True
+    def __eq__(self, other):
+        if other: return False
+        else: return True
+    def __ne__(self, other):
+        if other: return True
+        else: return False
+    def __gt__(self, other):
+        if other: return False
+        else: return True
+    def __ge__(self, other):
+        return True
     def __repr__(self):
         return 'Undef'
     def __call__(self):
diff --git a/lib/nulib/python/nulib/web/api.py b/lib/nulib/python/nulib/web/api.py
index 24ee87d..66fb2c5 100644
--- a/lib/nulib/python/nulib/web/api.py
+++ b/lib/nulib/python/nulib/web/api.py
@@ -1,7 +1,11 @@
 # -*- coding: utf-8 mode: python -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
 
-__all__ = ('_weburl', '_ensure_session')
+__all__ = (
+    '_weburl', '_ensure_session',
+    'u', 'uval',
+)
 
+from types import UnicodeType, StringType
 from ..ext import web
 
 def _weburl(path, __BASEURL, **kw):
@@ -14,3 +18,21 @@ def _ensure_session(page):
     if session is None: raise ValueError("no session configured")
     page.session = session
     return session
+
+def u(text):
+    """Si text n'est pas de l'unicode, le convertir en unicode avec l'encoding utf-8
+    """
+    t = type(text)
+    if t is not UnicodeType:
+        if t is not StringType: text = str(text)
+        text = unicode(text, "utf-8")
+    return text
+
+def uval(value):
+    """Transformer value en unicode, en particulier s'il est callable ou s'il
+    a une méthode render()
+    """
+    if value is None: return None
+    if hasattr(value, 'render'): value = value.render()
+    if callable(value): value = value()
+    return u(value)
diff --git a/lib/nulib/python/nulib/web/bootstrap.py b/lib/nulib/python/nulib/web/bootstrap.py
index a34ac48..2b4b180 100644
--- a/lib/nulib/python/nulib/web/bootstrap.py
+++ b/lib/nulib/python/nulib/web/bootstrap.py
@@ -2,19 +2,22 @@
 
 __all__ = (
     'load',
+    'table', 'tr', 'td',
+    'Menu', 'Action',
     'About',
     'Alert', 'set_alert',
-    'Menu', 'Action',
 )
 
 import sys, traceback
+from types import StringType
 
-from ..base import seqof, Undef
+from ..base import isseq, seqof, Undef
 from ..ext import web
 
 from . import ui
-from .ui import Action, u, p
-from .api import _ensure_session
+from .api import _ensure_session, u, uval
+from .model import Row, TableSchema
+from .ui import Action, p
 
 Undef = Undef() # spécifique à ce module
 
@@ -43,12 +46,98 @@ def load(prefix=None, icons=True, charset="utf-8"):
     ])
     return u"\n".join(lines)
 
-def sa(value, kw, name, default=Undef):
-    """si value est indéfini, récupérer la valeur avec le nom court dans kw
-    """
-    if value is Undef and name is not None: value = kw.pop(name, Undef)
-    if value is Undef: value = default
-    return value
+################################################################################
+# Table
+
+TRD_CLASS_MAP = dict(
+    active="active",
+    success="success", done="success",
+    info="info",
+    warning="warning", warn="warning", notice="warning",
+    danger="danger", error="danger",
+)
+def trd_joinc(css):
+    if css is Undef: css = None
+    if type(css) is StringType:
+        css = css.split(",")
+    classes = []
+    for css in seqof(css):
+        classes.append(TRD_CLASS_MAP.get(css, css))
+    css = ' '.join(classes)
+    return css
+
+def td(value, schema=None, css=Undef, tag=Undef, **kw):
+    css = Undef.sa(css, kw, 'c')
+    value = uval(value)
+    if schema:
+        value = schema.html(value)
+        if css is Undef: css = schema.css(value)
+    if tag is Undef: tag = 'td'
+    css = trd_joinc(css)
+    return u'<%s%s>%s</%s>' % (tag, ui.classif(css), value, tag)
+
+def tr(values, schema=None, css=Undef, celltag=Undef, **kw):
+    css = Undef.sa(css, kw, 'c')
+    tdschema = lambda value, index: None
+    if schema is not None:
+        if css is Undef: css = schema.css(values)
+        tdschema = lambda value, index: schema.cell_schema(value, index)
+    css = trd_joinc(css)
+    lines = []
+    lines.append(u'<tr%s>' % ui.classif(css))
+    index = 0
+    if isinstance(values, dict) or isinstance(values, Row):
+        if schema is not None:
+            for col in schema.cols:
+                value = values[col.key]
+                lines.append(td(value, tdschema(value, index), tag=celltag))
+                index += 1
+        else:
+            for value in values.values():
+                lines.append(td(value, tdschema(value, index), tag=celltag))
+                index += 1
+    else:
+        for value in values:
+            lines.append(td(value, tdschema(value, index), tag=celltag))
+            index += 1
+    lines.append(u'</tr>')
+    return u'\n'.join(lines)
+
+TABLE_CLASS_MAP = dict(
+    auto="table-auto", a="table-auto",
+    striped="table-striped", strip="table-striped", s="table-striped",
+    bordered="table-bordered", border="table-bordered", b="table-bordered",
+    hover="table-hover", h="table-hover",
+    condensed="table-condensed", c="table-condensed",
+)
+def table_joinc(css):
+    if css is Undef: css = None
+    if type(css) is StringType:
+        css = css.split(",")
+    classes = ['table']
+    for css in seqof(css):
+        classes.append(TABLE_CLASS_MAP.get(css, css))
+    css = ' '.join(classes)
+    return css
+
+def table(rows, schema=None, css=Undef, **kw):
+    css = Undef.sa(css, kw, 'c')
+    if schema is None: schema = TableSchema.parse(rows)
+    elif isseq(schema): schema = TableSchema(schema)
+    if css is Undef: css = schema.css(rows)
+    css = table_joinc(css)
+    lines = []
+    lines.append(u'<table%s>' % ui.classif(css))
+    lines.append(u'<thead>')
+    lines.append(tr(schema.headers(), schema.header_row_schema(), celltag='th'))
+    lines.append(u'</thead><tbody>')
+    index = 0
+    for row in rows:
+        lines.append(tr(row, schema.body_row_schema(index)))
+        index += 1
+    lines.append(u'</tbody>')
+    lines.append(u'</table>')
+    return u'\n'.join(lines)
 
 ################################################################################
 # Menu
@@ -265,12 +354,12 @@ class Alert(object):
     showtb = None
 
     def __init__(self, msg=None, exc_info=Undef, type=Undef, closeable=Undef, escape=Undef, action=None, showtb=True, **kw):
-        exc_info = sa(exc_info, kw, 'e')
+        exc_info = Undef.sa(exc_info, kw, 'e')
         if exc_info is Undef: exc_info = sys.exc_info()
         if exc_info == (None, None, None): exc_info = None
-        type = sa(type, kw, 't', "error")
-        closeable = sa(closeable, kw, 'c', False)
-        escape = sa(escape, kw, 'x', None)
+        type = Undef.sa(type, kw, 't', "error")
+        closeable = Undef.sa(closeable, kw, 'c', False)
+        escape = Undef.sa(escape, kw, 'x', None)
 
         self.msg = msg
         self.exc_info = exc_info
@@ -281,7 +370,7 @@ class Alert(object):
         self.showtb = showtb
 
     def __call__(self, msg=Undef, exc_info=Undef, type=Undef, closeable=Undef, escape=Undef, action=Undef, showtb=Undef, **kw):
-        exc_info = sa(exc_info, kw, 'e')
+        exc_info = Undef.sa(exc_info, kw, 'e')
         if msg is Undef:
             # si on ne spécifie pas de message, alors prendre la valeur actuelle
             msg = self.msg
@@ -290,11 +379,11 @@ class Alert(object):
             # si on spécifie un message, alors prendre aussi l'exception courante
             if exc_info is Undef: exc_info = sys.exc_info()
             if exc_info == (None, None, None): exc_info = None
-        type = sa(type, kw, 't', self.type)
-        closeable = sa(closeable, kw, 'c', self.closeable)
-        escape = sa(escape, kw, 'x', self.escape)
-        action = sa(action, kw, None, self.action)
-        showtb = sa(showtb, kw, None, self.showtb)
+        type = Undef.sa(type, kw, 't', self.type)
+        closeable = Undef.sa(closeable, kw, 'c', self.closeable)
+        escape = Undef.sa(escape, kw, 'x', self.escape)
+        action = Undef.sa(action, kw, None, self.action)
+        showtb = Undef.sa(showtb, kw, None, self.showtb)
 
         self.msg = msg
         self.exc_info = exc_info
@@ -306,7 +395,7 @@ class Alert(object):
         return self
 
     def render(self, msg=Undef, exc_info=Undef, type=Undef, closeable=Undef, escape=Undef, action=Undef, showtb=Undef, **kw):
-        exc_info = sa(exc_info, kw, 'e')
+        exc_info = Undef.sa(exc_info, kw, 'e')
         if msg is Undef:
             # si on ne spécifie pas de message, alors prendre la valeur initiale
             msg = self.msg
@@ -314,11 +403,11 @@ class Alert(object):
         else:
             # si on spécifie un message, alors prendre aussi l'exception courante
             if exc_info is Undef: exc_info = sys.exc_info()
-        type = sa(type, kw, 't', self.type)
-        closeable = sa(closeable, kw, 'c', self.closeable)
-        escape = sa(escape, kw, 'x', self.escape)
-        action = sa(action, kw, None, self.action)
-        showtb = sa(showtb, kw, None, self.showtb)
+        type = Undef.sa(type, kw, 't', self.type)
+        closeable = Undef.sa(closeable, kw, 'c', self.closeable)
+        escape = Undef.sa(escape, kw, 'x', self.escape)
+        action = Undef.sa(action, kw, None, self.action)
+        showtb = Undef.sa(showtb, kw, None, self.showtb)
 
         if callable(msg):
             # si msg est callable, par défaut ne pas mettre le résultat en
diff --git a/lib/nulib/python/nulib/web/model.py b/lib/nulib/python/nulib/web/model.py
index 266fed5..a1f3318 100644
--- a/lib/nulib/python/nulib/web/model.py
+++ b/lib/nulib/python/nulib/web/model.py
@@ -3,14 +3,19 @@
 __all__ = (
     'LazyObject',
     'dbconfig', 'fixsqlite', 'lazydb', 'oradbinfos',
-    'incd', 'excd', 'Row', 'RowCtl',
+    'incd', 'excd', 'ColSchema', 'Col', 'Row', 'RowCtl',
     'Migration',
 )
 
 from os import path
+from types import StringType
 import csv
 
+from ..base import Undef, odict, seqof
 from ..ext import web
+from .api import uval
+
+Undef = Undef() # spécifique à ce module
 
 class LazyObject(object):
     """Un objet proxy vers un autre objet qui est construit avec retard
@@ -84,6 +89,69 @@ class oradbinfos(object):
     def __unicode__(self):
         return self()
 
+class ColSchema(odict):
+    def __init__(self, formatter=Undef, link=Undef, **kw):
+        formatter = Undef.sa(formatter, kw, 'f', None)
+        link = Undef.sa(link, kw, 'u', None)
+        super(ColSchema, self).__init__(**kw)
+        self.formatter = formatter
+        self.link = link
+
+    def css(self, value=Undef):
+        return None
+    def format(self, value, index=Undef):
+        formatter = self.formatter
+        if type(formatter) is StringType:
+            return formatter % value
+        elif formatter is not None:
+            return formatter(value)
+        else:
+            return value
+    def text(self, value, index=Undef):
+        return self.format(value, index)
+    def html(self, value, index=Undef):
+        link = uval(self.link)
+        value = self.format(value, index)
+        if link is None: return value
+        else: return u'<a href="%s">%s</a>' % (link, value)
+
+class Col(odict):
+    def __init__(self, key, title=Undef, schema=Undef, formatter=Undef, link=Undef, **kw):
+        title = Undef.sa(title, kw, 't', None)
+        schema = Undef.sa(schema, kw, 's', None)
+        formatter = Undef.sa(formatter, kw, 'f')
+        link = Undef.sa(link, kw, 'u')
+        super(Col, self).__init__(**kw)
+        if title is None: title = key
+        if schema is None and (formatter is not Undef or link is not Undef):
+            schema = ColSchema(formatter, link)
+        self.key = key
+        self.title = title
+        self.schema = schema
+
+def geti(values, index):
+    return values[index] if index >= 0 and index < len(values) else None
+
+class RowSchema(odict):
+    def __init__(self, cols=Undef, **kw):
+        cols = seqof(Undef.sa(cols, kw, None, None))
+        super(RowSchema, self).__init__(**kw)
+        self.cols = cols
+
+    def col(self, index=Undef):
+        if index is not Undef:
+            return geti(self.cols, index)
+        return None
+
+    def cell_schema(self, value=Undef, index=Undef):
+        if index is not Undef:
+            col = geti(self.cols, index)
+            if col is not None: return col.schema
+        return None
+
+    def css(self, value=Undef):
+        return None
+
 class Row(object):
     """un proxy vers une ligne de web.database
 
@@ -94,8 +162,24 @@ class Row(object):
     def __init__(self, row):
         self.__dict__['_row'] = row
 
-    def __contains__(self, name):
-        return name in self._row
+    def keys(self): return self._row.keys()
+    def values(self): return self._row.values()
+    def items(self): return self._row.items()
+    def has_key(self): return self._row.has_key()
+    def get(self): return self._row.get()
+    def clear(self): return self._row.clear()
+    def setdefault(self): return self._row.setdefault()
+    def iterkeys(self): return self._row.iterkeys()
+    def itervalues(self): return self._row.itervalues()
+    def iteritems(self): return self._row.iteritems()
+    def pop(self): return self._row.pop()
+    def popitem(self): return self._row.popitem()
+    def update(self): return self._row.update()
+    def __iter__(self): return self._row.__iter__()
+    def __contains__(self, key): return self._row.__contains__(key)
+
+    def copy(self): return self.__class__(self._row)
+
     def __getattr__(self, name):
         row = self._row
         try:
@@ -128,9 +212,36 @@ class Row(object):
     def __delitem__(self, key):
         del self._row[key]
 
-    def __repr__(self): return repr(self._row)
+    def __repr__(self): return '<%s:%r>' % (self.__class__.__name__, self._row)
     def __str__(self): return str(self._row)
 
+def _firstof(values):
+    for value in values:
+        return value
+    return None
+
+class TableSchema(odict):
+    @staticmethod
+    def parse(rows):
+        # on assume que rows est une liste de dictionnaires
+        cols = [Col(key) for key in _firstof(rows)] if rows else Undef
+        return TableSchema(cols)
+
+    def __init__(self, cols=Undef, **kw):
+        cols = seqof(Undef.sa(cols, kw, None, None))
+        super(TableSchema, self).__init__(**kw)
+        self.cols = cols
+        self.row_schemas = {}
+        self.row_schemas['header'] = RowSchema(cols)
+        self.row_schemas['body'] = RowSchema(cols)
+
+    def headers(self):
+        return [col.title for col in self.cols]
+    def header_row_schema(self):
+        return self.row_schemas["header"]
+    def body_row_schema(self, index):
+        return self.row_schemas["body"]
+
 def incd(fd, *names):
     td = dict()
     if not names:
diff --git a/lib/nulib/python/nulib/web/ui.py b/lib/nulib/python/nulib/web/ui.py
index 1e21d66..dc81967 100644
--- a/lib/nulib/python/nulib/web/ui.py
+++ b/lib/nulib/python/nulib/web/ui.py
@@ -5,15 +5,15 @@ __all__ = (
     'accesskeyif',
     'classif', 'addclassif',
     'favicon', 'css', 'js', 'jscss',
-    'u', 'p',
+    'p',
     'Action', 'Menu',
 )
 
-from types import StringType, UnicodeType
 import urlparse, urllib
 
 from nulib.base import odict, isseq, seqof
 from nulib.web import web
+from .api import u
 
 def checked(b):
     return u' checked="checked"' if b else u''
@@ -45,7 +45,7 @@ def css(href, media=None):
     return ur'<link rel="stylesheet" href="%s" type="text/css"%s />' % (href, media or u'')
 def js(href):
     return ur'<script type="text/javascript" src="%s"></script>' % href
-def jscss(href, min=False):
+def jscss(href):
     if href.endswith(".min.js"):
         jshref = href
         csshref = "%s.css" % href[:-len(".min.js")]
@@ -57,15 +57,6 @@ def jscss(href, min=False):
         csshref = href
     return u"%s\n%s" % (js(jshref), css(csshref))
 
-def u(text):
-    """Si text n'est pas de l'unicode, le convertir en unicode avec l'encoding utf-8
-    """
-    t = type(text)
-    if t is not UnicodeType:
-        if t is not StringType: text = str(text)
-        text = unicode(text, "utf-8")
-    return text
-
 def p(text):
     """Si text commence par un tag, le laisser tel quel, sinon le mettre entre <p> et </p>
     """