ok, so we are back to the central question. the output below indictates that only "tables" are reflected and "views" are ignored. i like to think i am not the first who wants to use mysql views with sqla? is this really such a difficult task?
>>> print(Base.classes.keys()) ['attribs', 'dyn_table', 'nodes', 'entries'] On Wednesday, February 13, 2019 at 4:35:22 PM UTC+1, Simon King wrote: > > On Wed, Feb 13, 2019 at 3:22 PM Simon King <si...@simonking.org.uk > <javascript:>> wrote: > > > > On Wed, Feb 13, 2019 at 3:13 PM <christia...@itsv.at <javascript:>> > wrote: > > > > > > did not work out very well,...god, this stuff gives some good > headache! > > > > > > >>> from sqlalchemy.ext.automap import automap_base > > > >>> Base = automap_base(metadata=metadata) > > > >>> Base.prepare() > > > >>> WebView = Base.classes.web_view > > > Traceback (most recent call last): > > > File "<stdin>", line 1, in <module> > > > File > "/usr/lib64/python2.7/site-packages/sqlalchemy/util/_collections.py", line > 212, in __getattr__ > > > raise AttributeError(key) > > > AttributeError: web_view > > > > > > What does "print(Base.classes)" report at this point? > > Sorry, that should probably have been "print(Base.classes.keys())" > > > > > > > > > > > On Wednesday, February 13, 2019 at 4:01:25 PM UTC+1, Simon King wrote: > > >> > > >> It looks like you are mixing up Table objects (which are part of > > >> SQLAlchemy Core) with mapped classes (part of SQLAlchemy ORM). > > >> > > >> The objects in metadata.tables are instances of the Table class, and > > >> each correspond to a table or view in the database. The ORM allows > you > > >> to define classes which are mapped to those Tables, such that each > > >> instance of the mapped class corresponds to a *row* in the table. > > >> Flask-admin works with mapped classes (which it calls "models"), not > > >> Table instances. > > >> > > >> Since you are reflecting the database anyway, the quickest way for > you > > >> to get up-and-running might be to use the Automap extension: > > >> > > >> https://docs.sqlalchemy.org/en/latest/orm/extensions/automap.html > > >> > > >> It doesn't look like "Base.prepare()" accepts an argument telling it > > >> to reflect views, so you might actually need a combination of the two > > >> approaches, something like this (untested): > > >> > > >> engine = create_engine(app.config.get('SQLALCHEMY_DATABASE_URI')) > > >> metadata = MetaData(bind=engine) > > >> metadata.reflect(views=True, autoload=True) > > >> > > >> Base = automap_base(metadata=metadata) > > >> Base.prepare() > > >> > > >> Nodes = Base.classes.nodes > > >> Attributes = Base.classes.attribs > > >> Entries = Base.classes.entries > > >> WebView = Base.classes.web_view > > >> > > >> > > >> Hope that helps, > > >> > > >> Simon > > >> > > >> On Wed, Feb 13, 2019 at 2:19 PM <christia...@itsv.at> wrote: > > >> > > > >> > i already spent 3 days trying to map one stupid mysql view and i > cant get it to work. > > >> > > > >> > in the python interpreter it works... > > >> > > > >> > Python 2.7.5 (default, May 31 2018, 09:45:54) > > >> > [GCC 4.8.5 20150623 (Red Hat 4.8.5-28)] on linux2 > > >> > Type "help", "copyright", "credits" or "license" for more > information. > > >> > >>> SQLALCHEMY_DATABASE_URI = > 'mysql://aix_reg:blalblabla@localhost/aix_registry' > > >> > >>> from flask import Flask, request > > >> > >>> from flask_sqlalchemy import SQLAlchemy > > >> > >>> from sqlalchemy import String, Enum, create_engine, MetaData, > Table, Column, Integer > > >> > >>> from sqlalchemy.orm import sessionmaker > > >> > >>> from sqlalchemy.ext.declarative import declarative_base > > >> > >>> from flask_admin.contrib import sqla > > >> > >>> from flask_admin import Admin, expose, BaseView > > >> > >>> from flask_admin.contrib.sqla import ModelView > > >> > >>> from flask_admin.model.template import EndpointLinkRowAction, > LinkRowAction > > >> > >>> Base = declarative_base() > > >> > >>> engine = create_engine(SQLALCHEMY_DATABASE_URI) > > >> > >>> metadata = MetaData(bind=engine) > > >> > >>> Base.metadata = metadata > > >> > >>> metadata.reflect(views=True, autoload=True) > > >> > >>> WebView = metadata.tables['web_view'] > > >> > >>> WebView > > >> > Table('web_view', > MetaData(bind=Engine(mysql://aix_reg:***@localhost/aix_registry)), > Column('NODE_ID', INTEGER(display_width=11), table=<web_view>, > server_default=DefaultClause(<sqlalchemy.sql.elements.TextClause object at > 0x3fff7aace890>, for_update=False)), Column('NODE', VARCHAR(length=256), > table=<web_view>), Column('LOCATION', VARCHAR(length=256), > table=<web_view>), Column('IS_CLUSTER', VARCHAR(length=256), > table=<web_view>), Column('MAN_SYS_NAME', VARCHAR(length=256), > table=<web_view>), Column('HAS_CICS', VARCHAR(length=256), > table=<web_view>), Column('OS_LEVEL', VARCHAR(length=256), > table=<web_view>), Column('HAS_COBOL', VARCHAR(length=256), > table=<web_view>), Column('HAS_ORACLE', VARCHAR(length=256), > table=<web_view>), Column('MEM_VALUE', VARCHAR(length=256), > table=<web_view>), Column('HAS_TUXEDO', VARCHAR(length=256), > table=<web_view>), Column('STORAGE_VALUE', VARCHAR(length=256), > table=<web_view>), Column('IS_LPM', VARCHAR(length=256), table=<web_view>), > Column('HAS_SAP', VARCHAR(length=256), table=<web_view>), > Column('CPU_VALUE', VARCHAR(length=256), table=<web_view>), > Column('CLUSTER_RGS', VARCHAR(length=256), table=<web_view>), > Column('HA_LEVEL', VARCHAR(length=256), table=<web_view>), > Column('CLUSTER_NODES', VARCHAR(length=256), table=<web_view>), > Column('CLUSTER_NAME', VARCHAR(length=256), table=<web_view>), > Column('CPU_POOL', VARCHAR(length=256), table=<web_view>), > Column('AME_FACTOR', VARCHAR(length=256), table=<web_view>), > Column('SYS_PROFILE', VARCHAR(length=256), table=<web_view>), > Column('INFO_MAIL', VARCHAR(length=256), table=<web_view>), > Column('HOSTNAME', VARCHAR(length=256), table=<web_view>), > Column('OS_TYPE', VARCHAR(length=256), table=<web_view>), > Column('Java6_64', VARCHAR(length=256), table=<web_view>), > Column('Java7_64', VARCHAR(length=256), table=<web_view>), > Column('Java8_64', VARCHAR(length=256), table=<web_view>), > Column('Java5_64', VARCHAR(length=256), table=<web_view>), Column('Java8', > VARCHAR(length=256), table=<web_view>), Column('Java5', > VARCHAR(length=256), table=<web_view>), Column('Java14', > VARCHAR(length=256), table=<web_view>), Column('Java7', > VARCHAR(length=256), table=<web_view>), Column('Java71', > VARCHAR(length=256), table=<web_view>), Column('Java71_64', > VARCHAR(length=256), table=<web_view>), Column('Java14_64', > VARCHAR(length=256), table=<web_view>), Column('Java6', > VARCHAR(length=256), table=<web_view>), Column('UPTIME', > VARCHAR(length=256), table=<web_view>), Column('IP', VARCHAR(length=256), > table=<web_view>), Column('IP_LONG', VARCHAR(length=256), > table=<web_view>), Column('CLUSTER_NODENAME', VARCHAR(length=256), > table=<web_view>), Column('RG_SERVICE_IP_LONG', VARCHAR(length=256), > table=<web_view>), Column('HAS_SNA', VARCHAR(length=256), > table=<web_view>), schema=None) > > >> > > > >> > > > >> > > > >> > but in the flask app no way > > >> > > > >> > Base = declarative_base() > > >> > engine = create_engine(app.config.get('SQLALCHEMY_DATABASE_URI')) > > >> > metadata = MetaData(bind=engine) > > >> > Base.metadata = metadata > > >> > metadata.reflect(views=True, autoload=True) > > >> > > > >> > Nodes = metadata.tables['nodes'] > > >> > Attributes = metadata.tables['attribs'] > > >> > Entries = metadata.tables['entries'] > > >> > WebView = metadata.tables['web_view'] > > >> > > > >> > session = sessionmaker(bind=engine) > > >> > > > >> > > > >> > admin = Admin(app, name='AIX Registry', template_mode='bootstrap3') > > >> > admin.add_view(AixAdmin(Nodes, session, 'Overview')) > > >> > > > >> > root@lpgaixmgmtlx01:/root/flask/aix_registry>python run.py > > >> > Traceback (most recent call last): > > >> > File "run.py", line 3, in <module> > > >> > from app import app > > >> > File "/root/flask/aix_registry/app/__init__.py", line 18, in > <module> > > >> > from app import views > > >> > File "/root/flask/aix_registry/app/views.py", line 55, in > <module> > > >> > admin.add_view(AixAdmin(Nodes, session, 'Overview')) > > >> > File > "/usr/lib/python2.7/site-packages/flask_admin/contrib/sqla/view.py", line > 329, in __init__ > > >> > menu_icon_value=menu_icon_value) > > >> > File > "/usr/lib/python2.7/site-packages/flask_admin/model/base.py", line 812, in > __init__ > > >> > menu_icon_value=menu_icon_value) > > >> > File "/usr/lib/python2.7/site-packages/flask_admin/base.py", line > 192, in __init__ > > >> > self.endpoint = self._get_endpoint(endpoint) > > >> > File > "/usr/lib/python2.7/site-packages/flask_admin/model/base.py", line 825, in > _get_endpoint > > >> > return self.model.__name__.lower() > > >> > AttributeError: 'Table' object has no attribute '__name__' > > >> > > > >> > > > >> > so how can i do this highly frustrating task correctly? > > >> > > > >> > -- > > >> > SQLAlchemy - > > >> > The Python SQL Toolkit and Object Relational Mapper > > >> > > > >> > http://www.sqlalchemy.org/ > > >> > > > >> > To post example code, please provide an MCVE: Minimal, Complete, > and Verifiable Example. See http://stackoverflow.com/help/mcve for a full > description. > > >> > --- > > >> > You received this message because you are subscribed to the Google > Groups "sqlalchemy" group. > > >> > To unsubscribe from this group and stop receiving emails from it, > send an email to sqlalchemy+...@googlegroups.com. > > >> > To post to this group, send email to sqlal...@googlegroups.com. > > >> > Visit this group at https://groups.google.com/group/sqlalchemy. > > >> > For more options, visit https://groups.google.com/d/optout. > > > > > > -- > > > SQLAlchemy - > > > The Python SQL Toolkit and Object Relational Mapper > > > > > > http://www.sqlalchemy.org/ > > > > > > To post example code, please provide an MCVE: Minimal, Complete, and > Verifiable Example. See http://stackoverflow.com/help/mcve for a full > description. > > > --- > > > You received this message because you are subscribed to the Google > Groups "sqlalchemy" group. > > > To unsubscribe from this group and stop receiving emails from it, send > an email to sqlalchemy+...@googlegroups.com <javascript:>. > > > To post to this group, send email to sqlal...@googlegroups.com > <javascript:>. > > > Visit this group at https://groups.google.com/group/sqlalchemy. > > > For more options, visit https://groups.google.com/d/optout. > -- SQLAlchemy - The Python SQL Toolkit and Object Relational Mapper http://www.sqlalchemy.org/ To post example code, please provide an MCVE: Minimal, Complete, and Verifiable Example. See http://stackoverflow.com/help/mcve for a full description. --- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sqlalchemy+unsubscr...@googlegroups.com. To post to this group, send email to sqlalchemy@googlegroups.com. Visit this group at https://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/d/optout.
