[reportlab-users] Splitting a nested table over multiple pages

[Mike Driscoll]

Robin Becker wrote:

> Mike Driscoll wrote:

>> Hi,

>>

>> I am working on a program that accepts large datasets and transforms 

>> them into nested tables that need to be split across multiple pages 

>> in ReportLab. Here's the basic setup:

>>

>> 1) My top level table has four columns and an unknown number of rows

>> 2) In each column is a nested table

>> 3) The nested table has 3 column and an unknown number of rows

>>

>> When I try to feed my table the data, I end up getting the following 

>> traceback:

>>

>> IndexError: list index out of range

>> File 

>> "V:\PythonPackages\Development\pyRetention\pyRetention\pyreGUI.py", 

>> line 143, in <module>

>>  app.MainLoop()

>> File "C:\Python25\Lib\site-packages\wx-2.8-msw-unicode\wx\_core.py", 

>> line 7967, in MainLoop

>>  wx.PyApp.MainLoop(self)

>> File "C:\Python25\Lib\site-packages\wx-2.8-msw-unicode\wx\_core.py", 

>> line 7292, in MainLoop

>>  return _core_.PyApp_MainLoop(*args, **kwargs)

>> File 

>> "V:\PythonPackages\Development\pyRetention\pyRetention\pyreGUI.py", 

>> line 113, in onRun

>>  pdfGenerator.createPDF(userData)

>> File 

>> "V:\PythonPackages\Development\pyRetention\pyRetention\pdfGenerator.py", 

>> line 87, in createPDF

>>  doc.build(story, onFirstPage=onPageHeader)

>> File 

>> "c:\Python25\Lib\site-packages\reportlab\platypus\doctemplate.py", 

>> line 1010, in build

>>  BaseDocTemplate.build(self,flowables, canvasmaker=canvasmaker)

>> File 

>> "c:\Python25\Lib\site-packages\reportlab\platypus\doctemplate.py", 

>> line 777, in build

>>  self.handle_flowable(flowables)

>> File 

>> "c:\Python25\Lib\site-packages\reportlab\platypus\doctemplate.py", 

>> line 665, in handle_flowable

>>  if frame.add(f, canv, trySplit=self.allowSplitting):

>> File "c:\Python25\Lib\site-packages\reportlab\platypus\frames.py", 

>> line 159, in _add

>>  w, h = flowable.wrap(aW, h)

>> File "c:\Python25\Lib\site-packages\reportlab\platypus\tables.py", 

>> line 1092, in wrap

>>  self._calc(availWidth, availHeight)

>> File "c:\Python25\Lib\site-packages\reportlab\platypus\tables.py", 

>> line 571, in _calc

>>  W = self._calcPreliminaryWidths(availWidth) #widths

>> File "c:\Python25\Lib\site-packages\reportlab\platypus\tables.py", 

>> line 665, in _calcPreliminaryWidths

>>  value = self._cellvalues[rowNo][colNo]

>>

>> My outer table is set up like this:

>>

>> mainTbl = Table(data, splitByRow=1)

>>

>> And here's some example data that goes into it:

>>

>> data = [[tblOne, tblTwo, tblThree, tblFour],  [ddTblOne, ddTblTwo, 

>> ddTblThree, ddTblFour]]

>

> not sure what's going on here, but you should be aware that the inner 

> tables will never be split as we always split on row boundaries. From 

> the error it looks like one of the tables has something wrong with it.

>

> Why not try just outputting the inner tables one by one; if there's an 

> issue there then the traceback might indicate which table is wrong. 

> Could one of the inner tables actually be 0 x 0?

> .............

>


Okay...I went through all the tables in this query and I'm not seeing 
it. Maybe a fresh pair of eyes is in order. I've pasted my output here:

http://paste.pocoo.org/show/130422/

These are the nested tables, which I stick into the mainTbl like this:

<code>

innerTableData = [["Earnings", "Earnings", "Earnings", "Earnings"],
                  earningTables,
                  ["Deductions", "Deductions", "Deductions", "Deductions"],
                  deductionTables
                  ]
mainTbl = Table(innerTableData, splitByRow=1)   
story.append(mainTbl)

</code>

I'm sure all I need is a drubbing from the clue stick. Hopefully someone 
has one handy.

- Mike