I've solved my problem - just additional condition
in dal\pydal\adapters\base.py:
298.
299.
300.
301.
302.
303.
304.
305.
306.
307.
# must be PK reference or unique
if rfield.type[:10] != 'reference ' and rfield.type[:14] !=
'big-reference ' and \
getattr(rtable, '_primarykey', None) and rfieldname in
rtable._primarykey or \
rfield.unique:
ftype = types[rfield.type[:9]] % \
dict(length=rfield.length)
# multicolumn primary key reference?
if not rfield.unique and len(rtable._primarykey)>1:
# then it has to be a table level FK
if rtablename not in TFK:
works fine!
On Sunday, March 13, 2016 at 12:17:06 AM UTC+3, Val K wrote:
>
> OK! Let's dance
>
> This doesn't work (with SQLite at least):
> db.define_table('a_tbl', Field('id', 'integer'), Field('name'),
> primarykey=['id'] ) # one keyed table
> db.define_table('b_tbl', Field('id', 'reference a_tbl.id'),
> Field('name'), primarykey=['id']) # another keyed table
>
> <class 'sqlite3.OperationalError'> near "name": syntax error
>
>
> sql.log:
> *CREATE TABLE b_tbl(*
> * id INTEGER, CONSTRAINT "FK_b_tbl_id__constraint" FOREIGN KEY (id)
> REFERENCES a_tbl (id) ON DELETE CASCADE,** name CHAR(512),**
> PRIMARY KEY(id)) ;*
>
>
> This doesn't work too:
> db.define_table('a_tbl', Field('id', 'integer'), Field('name'),
> primarykey=['id'] ) # one keyed table
> db.define_table('b_tbl', Field('id', db.a_tbl), Field('name'),
> primarykey=['id']) # another keyed table
> it produces the same sql.log and causes the same error - expected
>
>
> But this works!:
> db.define_table('a_tbl', Field('id', 'id'), Field('name') ) # not keyed
> table
> db.define_table('b_tbl', Field('id', 'reference a_tbl'), Field('name'),
> primarykey=['id']) # keyed table that references to not keyed table
>
>
> it produces another sql.log:
> CREATE TABLE b_tbl(
> id INTEGER REFERENCES a_tbl (id) ON DELETE CASCADE NOT NULL ,
> name CHAR(512),
> PRIMARY KEY(id)) ;
>
>
>
>
>
>
>
>
>
>
>
>
> On Saturday, March 12, 2016 at 8:54:37 PM UTC+3, Anthony wrote:
>>
>> Not sure if it's a bug, but the book does say:
>>
>> - Keyed tables can only reference other keyed tables.
>> - Referencing fields must use the reference tablename.fieldname
>> format.
>>
>> Anthony
>>
>> On Saturday, March 12, 2016 at 4:52:53 AM UTC-5, Val K wrote:
>>>
>>> Hi!
>>> I have a problem - look at example:
>>>
>>> db.define_table('a_tbl', Field('name'))
>>> db.define_table('b_tbl', Field('id', 'reference a_tbl') ,Field('name'),
>>> primarykey=['id'])
>>> db.define_table('c_tbl', Field('b_tbl_id', 'reference b_tbl')
>>> ,Field('name'))
>>>
>>>
>>> *c_tbl* definition causes an error (see below) because there is
>>> *b_tbl_id* field that references to *b_tbl* that has *id* reference
>>> to *a_tbl*
>>>
>>> Is this a bug?
>>>
>>>
>>>
>>>
>>> ----------------------------------------------------------------------------------------------------------
>>>
>>> <type 'exceptions.KeyError'> 'foreign_key'
>>>
>>> web2py™Version 2.13.4-stable+timestamp.2015.12.26.04.59.39PythonPython
>>> 2.7.9:
>>>
>>>
>>> *File D:\web2py_last\web2py\gluon\packages\dal\pydal\adapters\base.py in
>>> create_table at line 303*
>>> Function argument list
>>>
>>> (self=<pydal.adapters.sqlite.SQLiteAdapter object>, table=<Table c_tbl
>>> (id,name)>, migrate=True, fake_migrate=False, polymodel=None)
>>> Code listing
>>>
>>> 298.
>>> 299.
>>> 300.
>>> 301.
>>> 302.
>>> 303.
>>>
>>> 304.
>>> 305.
>>> 306.
>>> 307.
>>>
>>>
>>> # must be PK reference or unique
>>> if getattr(rtable, '_primarykey', None) and rfieldname in
>>> rtable._primarykey or \
>>> rfield.unique:
>>> ftype = types[rfield.type[:9]] % \
>>> dict(length=rfield.length)
>>>
>>> # multicolumn primary key reference?
>>> if not rfield.unique and len(rtable._primarykey)>1:
>>> # then it has to be a table level FK
>>> if rtablename not in TFK:
>>>
>>>
>>>
>>>
>>>
--
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