welcome3

2015-03-10 13:42:58 -05:00
parent 3f9f8db62c
commit 46e0dcebf2
95 changed files with 9789 additions and 1 deletions
@@ -0,0 +1,672 @@
+# -*- coding: utf-8 -*-
+
+# ##########################################################
+# ## make sure administrator is on localhost
+# ###########################################################
+
+import os
+import socket
+import datetime
+import copy
+import gluon.contenttype
+import gluon.fileutils
+
+try:
+    import pygraphviz as pgv
+except ImportError:
+    pgv = None
+
+is_gae = request.env.web2py_runtime_gae or False
+
+# ## critical --- make a copy of the environment
+
+global_env = copy.copy(globals())
+global_env['datetime'] = datetime
+
+http_host = request.env.http_host.split(':')[0]
+remote_addr = request.env.remote_addr
+try:
+    hosts = (http_host, socket.gethostname(),
+             socket.gethostbyname(http_host),
+             '::1', '127.0.0.1', '::ffff:127.0.0.1')
+except:
+    hosts = (http_host, )
+
+if request.is_https:
+    session.secure()
+elif (remote_addr not in hosts) and (remote_addr != "127.0.0.1") and \
+    (request.function != 'manage'):
+    raise HTTP(200, T('appadmin is disabled because insecure channel'))
+
+if request.function == 'manage':
+    if not 'auth' in globals() or not request.args:
+        redirect(URL(request.controller, 'index'))
+    manager_action = auth.settings.manager_actions.get(request.args(0), None)
+    if manager_action is None and request.args(0) == 'auth':
+        manager_action = dict(role=auth.settings.auth_manager_role,
+                              heading=T('Manage Access Control'),
+                              tables=[auth.table_user(),
+                                      auth.table_group(),
+                                      auth.table_permission()])
+    manager_role = manager_action.get('role', None) if manager_action else None
+    auth.requires_membership(manager_role)(lambda: None)()
+    menu = False
+elif (request.application == 'admin' and not session.authorized) or \
+        (request.application != 'admin' and not gluon.fileutils.check_credentials(request)):
+    redirect(URL('admin', 'default', 'index',
+                 vars=dict(send=URL(args=request.args, vars=request.vars))))
+else:
+    response.subtitle = T('Database Administration (appadmin)')
+    menu = True
+
+ignore_rw = True
+response.view = 'appadmin.html'
+if menu:
+    response.menu = [[T('design'), False, URL('admin', 'default', 'design',
+                 args=[request.application])], [T('db'), False,
+                 URL('index')], [T('state'), False,
+                 URL('state')], [T('cache'), False,
+                 URL('ccache')]]
+
+# ##########################################################
+# ## auxiliary functions
+# ###########################################################
+
+if False and request.tickets_db:
+    from gluon.restricted import TicketStorage
+    ts = TicketStorage()
+    ts._get_table(request.tickets_db, ts.tablename, request.application)
+
+def get_databases(request):
+    dbs = {}
+    for (key, value) in global_env.items():
+        cond = False
+        try:
+            cond = isinstance(value, GQLDB)
+        except:
+            cond = isinstance(value, SQLDB)
+        if cond:
+            dbs[key] = value
+    return dbs
+
+
+databases = get_databases(None)
+
+
+def eval_in_global_env(text):
+    exec ('_ret=%s' % text, {}, global_env)
+    return global_env['_ret']
+
+
+def get_database(request):
+    if request.args and request.args[0] in databases:
+        return eval_in_global_env(request.args[0])
+    else:
+        session.flash = T('invalid request')
+        redirect(URL('index'))
+
+
+def get_table(request):
+    db = get_database(request)
+    if len(request.args) > 1 and request.args[1] in db.tables:
+        return (db, request.args[1])
+    else:
+        session.flash = T('invalid request')
+        redirect(URL('index'))
+
+
+def get_query(request):
+    try:
+        return eval_in_global_env(request.vars.query)
+    except Exception:
+        return None
+
+
+def query_by_table_type(tablename, db, request=request):
+    keyed = hasattr(db[tablename], '_primarykey')
+    if keyed:
+        firstkey = db[tablename][db[tablename]._primarykey[0]]
+        cond = '>0'
+        if firstkey.type in ['string', 'text']:
+            cond = '!=""'
+        qry = '%s.%s.%s%s' % (
+            request.args[0], request.args[1], firstkey.name, cond)
+    else:
+        qry = '%s.%s.id>0' % tuple(request.args[:2])
+    return qry
+
+
+# ##########################################################
+# ## list all databases and tables
+# ###########################################################
+def index():
+    return dict(databases=databases)
+
+
+# ##########################################################
+# ## insert a new record
+# ###########################################################
+
+
+def insert():
+    (db, table) = get_table(request)
+    form = SQLFORM(db[table], ignore_rw=ignore_rw)
+    if form.accepts(request.vars, session):
+        response.flash = T('new record inserted')
+    return dict(form=form, table=db[table])
+
+
+# ##########################################################
+# ## list all records in table and insert new record
+# ###########################################################
+
+
+def download():
+    import os
+    db = get_database(request)
+    return response.download(request, db)
+
+
+def csv():
+    import gluon.contenttype
+    response.headers['Content-Type'] = \
+        gluon.contenttype.contenttype('.csv')
+    db = get_database(request)
+    query = get_query(request)
+    if not query:
+        return None
+    response.headers['Content-disposition'] = 'attachment; filename=%s_%s.csv'\
+        % tuple(request.vars.query.split('.')[:2])
+    return str(db(query, ignore_common_filters=True).select())
+
+
+def import_csv(table, file):
+    table.import_from_csv_file(file)
+
+
+def select():
+    import re
+    db = get_database(request)
+    dbname = request.args[0]
+    try:
+        is_imap = db._uri.startswith("imap://")
+    except (KeyError, AttributeError, TypeError):
+        is_imap = False
+    regex = re.compile('(?P<table>\w+)\.(?P<field>\w+)=(?P<value>\d+)')
+    if len(request.args) > 1 and hasattr(db[request.args[1]], '_primarykey'):
+        regex = re.compile('(?P<table>\w+)\.(?P<field>\w+)=(?P<value>.+)')
+    if request.vars.query:
+        match = regex.match(request.vars.query)
+        if match:
+            request.vars.query = '%s.%s.%s==%s' % (request.args[0],
+                                                   match.group('table'), match.group('field'),
+                                                   match.group('value'))
+    else:
+        request.vars.query = session.last_query
+    query = get_query(request)
+    if request.vars.start:
+        start = int(request.vars.start)
+    else:
+        start = 0
+    nrows = 0
+
+    step = 100
+    fields = []
+
+    if is_imap:
+        step = 3
+ 
+    stop = start + step
+
+    table = None
+    rows = []
+    orderby = request.vars.orderby
+    if orderby:
+        orderby = dbname + '.' + orderby
+        if orderby == session.last_orderby:
+            if orderby[0] == '~':
+                orderby = orderby[1:]
+            else:
+                orderby = '~' + orderby
+    session.last_orderby = orderby
+    session.last_query = request.vars.query
+    form = FORM(TABLE(TR(T('Query:'), '', INPUT(_style='width:400px',
+                _name='query', _value=request.vars.query or '',
+                requires=IS_NOT_EMPTY(
+                    error_message=T("Cannot be empty")))), TR(T('Update:'),
+                INPUT(_name='update_check', _type='checkbox',
+                value=False), INPUT(_style='width:400px',
+                _name='update_fields', _value=request.vars.update_fields
+                                    or '')), TR(T('Delete:'), INPUT(_name='delete_check',
+                _class='delete', _type='checkbox', value=False), ''),
+                TR('', '', INPUT(_type='submit', _value=T('submit')))),
+                _action=URL(r=request, args=request.args))
+
+    tb = None
+    if form.accepts(request.vars, formname=None):
+        regex = re.compile(request.args[0] + '\.(?P<table>\w+)\..+')
+        match = regex.match(form.vars.query.strip())
+        if match:
+            table = match.group('table')
+        try:
+            nrows = db(query, ignore_common_filters=True).count()
+            if form.vars.update_check and form.vars.update_fields:
+                db(query, ignore_common_filters=True).update(
+                    **eval_in_global_env('dict(%s)' % form.vars.update_fields))
+                response.flash = T('%s %%{row} updated', nrows)
+            elif form.vars.delete_check:
+                db(query, ignore_common_filters=True).delete()
+                response.flash = T('%s %%{row} deleted', nrows)
+            nrows = db(query, ignore_common_filters=True).count()
+
+            if is_imap:
+                fields = [db[table][name] for name in
+                    ("id", "uid", "created", "to",
+                     "sender", "subject")]
+            if orderby:
+                rows = db(query, ignore_common_filters=True).select(
+                              *fields, limitby=(start, stop),
+                              orderby=eval_in_global_env(orderby))
+            else:
+                rows = db(query, ignore_common_filters=True).select(
+                    *fields, limitby=(start, stop))
+        except Exception, e:
+            import traceback
+            tb = traceback.format_exc()
+            (rows, nrows) = ([], 0)
+            response.flash = DIV(T('Invalid Query'), PRE(str(e)))
+    # begin handle upload csv
+    csv_table = table or request.vars.table
+    if csv_table:
+        formcsv = FORM(str(T('or import from csv file')) + " ",
+                       INPUT(_type='file', _name='csvfile'),
+                       INPUT(_type='hidden', _value=csv_table, _name='table'),
+                       INPUT(_type='submit', _value=T('import')))
+    else:
+        formcsv = None
+    if formcsv and formcsv.process().accepted:
+        try:
+            import_csv(db[request.vars.table],
+                       request.vars.csvfile.file)
+            response.flash = T('data uploaded')
+        except Exception, e:
+            response.flash = DIV(T('unable to parse csv file'), PRE(str(e)))
+    # end handle upload csv
+
+    return dict(
+        form=form,
+        table=table,
+        start=start,
+        stop=stop,
+        step=step,
+        nrows=nrows,
+        rows=rows,
+        query=request.vars.query,
+        formcsv=formcsv,
+        tb=tb
+    )
+
+
+# ##########################################################
+# ## edit delete one record
+# ###########################################################
+
+
+def update():
+    (db, table) = get_table(request)
+    keyed = hasattr(db[table], '_primarykey')
+    record = None
+    db[table]._common_filter = None
+    if keyed:
+        key = [f for f in request.vars if f in db[table]._primarykey]
+        if key:
+            record = db(db[table][key[0]] == request.vars[key[
+                        0]]).select().first()
+    else:
+        record = db(db[table].id == request.args(
+            2)).select().first()
+
+    if not record:
+        qry = query_by_table_type(table, db)
+        session.flash = T('record does not exist')
+        redirect(URL('select', args=request.args[:1],
+                     vars=dict(query=qry)))
+
+    if keyed:
+        for k in db[table]._primarykey:
+            db[table][k].writable = False
+
+    form = SQLFORM(
+        db[table], record, deletable=True, delete_label=T('Check to delete'),
+        ignore_rw=ignore_rw and not keyed,
+        linkto=URL('select',
+                   args=request.args[:1]), upload=URL(r=request,
+                                                      f='download', args=request.args[:1]))
+
+    if form.accepts(request.vars, session):
+        session.flash = T('done!')
+        qry = query_by_table_type(table, db)
+        redirect(URL('select', args=request.args[:1],
+                 vars=dict(query=qry)))
+    return dict(form=form, table=db[table])
+
+
+# ##########################################################
+# ## get global variables
+# ###########################################################
+
+
+def state():
+    return dict()
+
+
+def ccache():
+    if is_gae:
+        form = FORM(
+            P(TAG.BUTTON(T("Clear CACHE?"), _type="submit", _name="yes", _value="yes")))
+    else:
+        cache.ram.initialize()
+        cache.disk.initialize()
+
+        form = FORM(
+            P(TAG.BUTTON(
+                T("Clear CACHE?"), _type="submit", _name="yes", _value="yes")),
+            P(TAG.BUTTON(
+                T("Clear RAM"), _type="submit", _name="ram", _value="ram")),
+            P(TAG.BUTTON(
+                T("Clear DISK"), _type="submit", _name="disk", _value="disk")),
+        )
+
+    if form.accepts(request.vars, session):
+        session.flash = ""
+        if is_gae:
+            if request.vars.yes:
+                cache.ram.clear()
+                session.flash += T("Cache Cleared")
+        else:
+            clear_ram = False
+            clear_disk = False
+            if request.vars.yes:
+                clear_ram = clear_disk = True
+            if request.vars.ram:
+                clear_ram = True
+            if request.vars.disk:
+                clear_disk = True
+            if clear_ram:
+                cache.ram.clear()
+                session.flash += T("Ram Cleared")
+            if clear_disk:
+                cache.disk.clear()
+                session.flash += T("Disk Cleared")
+        redirect(URL(r=request))
+
+    try:
+        from guppy import hpy
+        hp = hpy()
+    except ImportError:
+        hp = False
+
+    import shelve
+    import os
+    import copy
+    import time
+    import math
+    from gluon import portalocker
+
+    ram = {
+        'entries': 0,
+        'bytes': 0,
+        'objects': 0,
+        'hits': 0,
+        'misses': 0,
+        'ratio': 0,
+        'oldest': time.time(),
+        'keys': []
+    }
+
+    disk = copy.copy(ram)
+    total = copy.copy(ram)
+    disk['keys'] = []
+    total['keys'] = []
+
+    def GetInHMS(seconds):
+        hours = math.floor(seconds / 3600)
+        seconds -= hours * 3600
+        minutes = math.floor(seconds / 60)
+        seconds -= minutes * 60
+        seconds = math.floor(seconds)
+
+        return (hours, minutes, seconds)
+
+    if is_gae:
+        gae_stats = cache.ram.client.get_stats()
+        try:
+            gae_stats['ratio'] = ((gae_stats['hits'] * 100) /
+                (gae_stats['hits'] + gae_stats['misses']))
+        except ZeroDivisionError:
+            gae_stats['ratio'] = T("?")
+        gae_stats['oldest'] = GetInHMS(time.time() - gae_stats['oldest_item_age'])
+        total.update(gae_stats)
+    else:
+        for key, value in cache.ram.storage.iteritems():
+            if isinstance(value, dict):
+                ram['hits'] = value['hit_total'] - value['misses']
+                ram['misses'] = value['misses']
+                try:
+                    ram['ratio'] = ram['hits'] * 100 / value['hit_total']
+                except (KeyError, ZeroDivisionError):
+                    ram['ratio'] = 0
+            else:
+                if hp:
+                    ram['bytes'] += hp.iso(value[1]).size
+                    ram['objects'] += hp.iso(value[1]).count
+                ram['entries'] += 1
+                if value[0] < ram['oldest']:
+                    ram['oldest'] = value[0]
+                ram['keys'].append((key, GetInHMS(time.time() - value[0])))
+        folder = os.path.join(request.folder,'cache')
+        if not os.path.exists(folder):
+            os.mkdir(folder)
+        locker = open(os.path.join(folder, 'cache.lock'), 'a')
+        portalocker.lock(locker, portalocker.LOCK_EX)
+        disk_storage = shelve.open(
+            os.path.join(folder, 'cache.shelve'))
+        try:
+            for key, value in disk_storage.items():
+                if isinstance(value, dict):
+                    disk['hits'] = value['hit_total'] - value['misses']
+                    disk['misses'] = value['misses']
+                    try:
+                        disk['ratio'] = disk['hits'] * 100 / value['hit_total']
+                    except (KeyError, ZeroDivisionError):
+                        disk['ratio'] = 0
+                else:
+                    if hp:
+                        disk['bytes'] += hp.iso(value[1]).size
+                        disk['objects'] += hp.iso(value[1]).count
+                    disk['entries'] += 1
+                    if value[0] < disk['oldest']:
+                        disk['oldest'] = value[0]
+                    disk['keys'].append((key, GetInHMS(time.time() - value[0])))
+        finally:
+            portalocker.unlock(locker)
+            locker.close()
+            disk_storage.close()
+
+        total['entries'] = ram['entries'] + disk['entries']
+        total['bytes'] = ram['bytes'] + disk['bytes']
+        total['objects'] = ram['objects'] + disk['objects']
+        total['hits'] = ram['hits'] + disk['hits']
+        total['misses'] = ram['misses'] + disk['misses']
+        total['keys'] = ram['keys'] + disk['keys']
+        try:
+            total['ratio'] = total['hits'] * 100 / (total['hits'] +
+                                                total['misses'])
+        except (KeyError, ZeroDivisionError):
+            total['ratio'] = 0
+
+        if disk['oldest'] < ram['oldest']:
+            total['oldest'] = disk['oldest']
+        else:
+            total['oldest'] = ram['oldest']
+
+        ram['oldest'] = GetInHMS(time.time() - ram['oldest'])
+        disk['oldest'] = GetInHMS(time.time() - disk['oldest'])
+        total['oldest'] = GetInHMS(time.time() - total['oldest'])
+
+    def key_table(keys):
+        return TABLE(
+            TR(TD(B(T('Key'))), TD(B(T('Time in Cache (h:m:s)')))),
+            *[TR(TD(k[0]), TD('%02d:%02d:%02d' % k[1])) for k in keys],
+            **dict(_class='cache-keys',
+                   _style="border-collapse: separate; border-spacing: .5em;"))
+
+    if not is_gae:
+        ram['keys'] = key_table(ram['keys'])
+        disk['keys'] = key_table(disk['keys'])
+        total['keys'] = key_table(total['keys'])
+
+    return dict(form=form, total=total,
+                ram=ram, disk=disk, object_stats=hp != False)
+
+
+def table_template(table):
+    from gluon.html import TR, TD, TABLE, TAG
+
+    def FONT(*args, **kwargs):
+        return TAG.font(*args, **kwargs)
+
+    def types(field):
+        f_type = field.type
+        if not isinstance(f_type,str):
+            return ' '
+        elif f_type == 'string':
+            return field.length
+        elif f_type == 'id':
+            return B('pk')
+        elif f_type.startswith('reference') or \
+                f_type.startswith('list:reference'):
+            return B('fk')
+        else:
+            return ' '
+
+    # This is horribe HTML but the only one graphiz understands
+    rows = []
+    cellpadding = 4
+    color = "#000000"
+    bgcolor = "#FFFFFF"
+    face = "Helvetica"
+    face_bold = "Helvetica Bold"
+    border = 0
+
+    rows.append(TR(TD(FONT(table, _face=face_bold, _color=bgcolor),
+                           _colspan=3, _cellpadding=cellpadding,
+                           _align="center", _bgcolor=color)))
+    for row in db[table]:
+        rows.append(TR(TD(FONT(row.name, _color=color, _face=face_bold),
+                              _align="left", _cellpadding=cellpadding,
+                              _border=border),
+                       TD(FONT(row.type, _color=color, _face=face),
+                               _align="left", _cellpadding=cellpadding,
+                               _border=border),
+                       TD(FONT(types(row), _color=color, _face=face),
+                               _align="center", _cellpadding=cellpadding,
+                               _border=border)))
+    return "< %s >" % TABLE(*rows, **dict(_bgcolor=bgcolor, _border=1,
+                                          _cellborder=0, _cellspacing=0)
+                             ).xml()
+
+
+def bg_graph_model():
+    graph = pgv.AGraph(layout='dot',  directed=True,  strict=False,  rankdir='LR')
+
+    subgraphs = dict()
+    for tablename in db.tables:
+        if hasattr(db[tablename],'_meta_graphmodel'):
+            meta_graphmodel = db[tablename]._meta_graphmodel
+        else:
+            meta_graphmodel = dict(group='Undefined', color='#ECECEC')
+
+        group = meta_graphmodel['group'].replace(' ', '')
+        if not subgraphs.has_key(group):
+            subgraphs[group] = dict(meta=meta_graphmodel, tables=[])
+            subgraphs[group]['tables'].append(tablename)
+        else:
+            subgraphs[group]['tables'].append(tablename)
+
+        graph.add_node(tablename, name=tablename, shape='plaintext',
+                       label=table_template(tablename))
+
+    for n, key in enumerate(subgraphs.iterkeys()):
+        graph.subgraph(nbunch=subgraphs[key]['tables'],
+                    name='cluster%d' % n,
+                    style='filled',
+                    color=subgraphs[key]['meta']['color'],
+                    label=subgraphs[key]['meta']['group'])
+
+    for tablename in db.tables:
+        for field in db[tablename]:
+            f_type = field.type
+            if isinstance(f_type,str) and (
+                f_type.startswith('reference') or
+                f_type.startswith('list:reference')):
+                referenced_table = f_type.split()[1].split('.')[0]
+                n1 = graph.get_node(tablename)
+                n2 = graph.get_node(referenced_table)
+                graph.add_edge(n1, n2, color="#4C4C4C", label='')
+
+    graph.layout()
+    if not request.args:
+        response.headers['Content-Type'] = 'image/png'
+        return graph.draw(format='png', prog='dot')
+    else:
+        response.headers['Content-Disposition']='attachment;filename=graph.%s'%request.args(0)
+        if request.args(0) == 'dot':
+            return graph.string()
+        else:
+            return graph.draw(format=request.args(0), prog='dot')
+
+def graph_model():
+    return dict(databases=databases, pgv=pgv)
+
+def manage():
+    tables = manager_action['tables']
+    if isinstance(tables[0], str):
+        db = manager_action.get('db', auth.db)
+        db = globals()[db] if isinstance(db, str) else db
+        tables = [db[table] for table in tables]
+    if request.args(0) == 'auth':
+        auth.table_user()._plural = T('Users')
+        auth.table_group()._plural = T('Roles')
+        auth.table_membership()._plural = T('Memberships')
+        auth.table_permission()._plural = T('Permissions')
+    if request.extension != 'load':
+        return dict(heading=manager_action.get('heading',
+                    T('Manage %(action)s') % dict(action=request.args(0).replace('_', ' ').title())),
+                    tablenames=[table._tablename for table in tables],
+                    labels=[table._plural.title() for table in tables])
+
+    table = tables[request.args(1, cast=int)]
+    formname = '%s_grid' % table._tablename
+    linked_tables = orderby = None
+    if request.args(0) == 'auth':
+        auth.table_group()._id.readable = \
+        auth.table_membership()._id.readable = \
+        auth.table_permission()._id.readable = False
+        auth.table_membership().user_id.label = T('User')
+        auth.table_membership().group_id.label = T('Role')
+        auth.table_permission().group_id.label = T('Role')
+        auth.table_permission().name.label = T('Permission')
+        if table == auth.table_user():
+            linked_tables=[auth.settings.table_membership_name]
+        elif table == auth.table_group():
+            orderby = 'role' if not request.args(3) or '.group_id' not in request.args(3) else None
+        elif table == auth.table_permission():
+            orderby = 'group_id'
+    kwargs = dict(user_signature=True, maxtextlength=1000,
+                  orderby=orderby, linked_tables=linked_tables)
+    smartgrid_args = manager_action.get('smartgrid_args', {})
+    kwargs.update(**smartgrid_args.get('DEFAULT', {}))
+    kwargs.update(**smartgrid_args.get(table._tablename, {}))
+    grid = SQLFORM.smartgrid(table, args=request.args[:2], formname=formname, **kwargs)
+    return grid
@@ -0,0 +1,71 @@
+# -*- coding: utf-8 -*-
+# this file is released under public domain and you can use without limitations
+
+#########################################################################
+## This is a sample controller
+## - index is the default action of any application
+## - user is required for authentication and authorization
+## - download is for downloading files uploaded in the db (does streaming)
+## - api is an example of Hypermedia API support and access control
+#########################################################################
+
+def index():
+    """
+    example action using the internationalization operator T and flash
+    rendered by views/default/index.html or views/generic.html
+
+    if you need a simple wiki simply replace the two lines below with:
+    return auth.wiki()
+    """
+    response.flash = T("Welcome to web2py!")
+    return dict(message=T('Hello World'))
+
+
+def user():
+    """
+    exposes:
+    http://..../[app]/default/user/login
+    http://..../[app]/default/user/logout
+    http://..../[app]/default/user/register
+    http://..../[app]/default/user/profile
+    http://..../[app]/default/user/retrieve_password
+    http://..../[app]/default/user/change_password
+    http://..../[app]/default/user/manage_users (requires membership in
+    use @auth.requires_login()
+        @auth.requires_membership('group name')
+        @auth.requires_permission('read','table name',record_id)
+    to decorate functions that need access control
+    """
+    return dict(form=auth())
+
+
+@cache.action()
+def download():
+    """
+    allows downloading of uploaded files
+    http://..../[app]/default/download/[filename]
+    """
+    return response.download(request, db)
+
+
+def call():
+    """
+    exposes services. for example:
+    http://..../[app]/default/call/jsonrpc
+    decorate with @services.jsonrpc the functions to expose
+    supports xml, json, xmlrpc, jsonrpc, amfrpc, rss, csv
+    """
+    return service()
+
+
+@auth.requires_login() 
+def api():
+    """
+    this is example of API with access control
+    WEB2PY provides Hypermedia API (Collection+JSON) Experimental
+    """
+    from gluon.contrib.hypermedia import Collection
+    rules = {
+        '<tablename>': {'GET':{},'POST':{},'PUT':{},'DELETE':{}},
+        }
+    return Collection(db).process(request,response,rules)