[reportlab-users] Problem with a class derived from Table

[shawn a]

Thanks a lot Tim. I can now stop banging my head against my not so soft wall ;)

On Jan 22, 2008 1:24 PM, Tim Roberts <timr at probo.com> wrote:

> shawn a wrote:

> > I have a custom table class whose base is Table. When i pass in data

> > rows and the table can render itself  on ONE page there is no issue.

> > But when i pass in a larger data rows list that need to split onto

> > other pages i get an exception.

> >

> > For the purpose of this email I've stripped the custom table class down to this:

> >

> > from reportlab.platypus import Table

> > class MyTable(Table):

> >       def __init__(self,data,**kw):

> >               Table.__init__(self,data,**kw)

> >

> > then in my code

> >

> > t = MyTable(data,style=s[0])

> >

> > I am getting the following exception when the table needs to splitByRows:

> > Traceback (most recent call last):

> > ...  File "/usr/lib/python2.4/site-packages/reportlab/platypus/tables.py",

> > line 860, in _splitRows

> >     splitByRow=splitByRow)

> > TypeError: __init__() takes exactly 2 non-keyword arguments (4 given)

> >

> >

> > To recap my custom table class throws the above exception if the list

> > data is to large and the table needs to split across pages. It works

> > fine if the table can be rendered onto one page

> > OR i use the Table class exclusively:(like so)

> > t = Table(data,style=s[0])

> >

>

> Right.  This seems pretty clear.  The statement that explodes, line 860

> in tables.py, is calling the Table constructor, but it's passing some of

> the arguments positionally and some by keyword.  Your derived class

> assumes that all of the arguments, except the first, will always be by

> keyword.  You should be able to fix this via something like this:

>

>     class MyTable(Table):

>         def __init__( self, data, *pos, **kw ):

>             Table.__init__(self, data, *pos, **kw )

>

> --

> Tim Roberts, timr at probo.com

> Providenza & Boekelheide, Inc.

>

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