I'm trying to split a "full-width" table across 2 pages or even more. I use the Platypus library of ReportLab and the BaseDocTemplate class.
I've a "full width" table of elements and this should be drawn into a frame of the first page, if the table has enough rows It should be continued in the second page. My problem is that the frame of the first page has a different height and position than the others, because at the top of the first page I need to show more information (Yes... I'm talking about an invoice or order).
After thousands attempts, all that I've got is a pdf with a unique page with only 8 items/rows, It's exactly the space that they require at the first page, but if the table has more than 8 rows, then I get a pdf with only 1 page and without the table (that means an empty frame, although I see all data in the log).
I've used the methods split() and wrap() but probably in the wrong way, because I'm new with ReportLab. I show you the last version of my code:
from django.http import HttpResponse
from reportlab.pdfgen import canvas
from reportlab.lib.units import mm
from reportlab.lib import colors
from reportlab.lib.pagesizes import A4
from reportlab.platypus import BaseDocTemplate, PageTemplate, Table, Spacer, Frame, TableStyle,\
NextPageTemplate, PageBreak, FrameBreak
PAGE_WIDTH = A4[0]
PAGE_HEIGHT = A4[1]
MARGIN = 10*mm
class ThingPDF(BaseDocTemplate):
def header(self, canvas, subheader=True):
# print 'header()'
data = [('AAAA', 'Thing %s' % (self.thing.name)), ]
s = []
t = Table(data, colWidths=[95 * mm, 95 * mm], rowHeights=None, style=None, splitByRow=1,
repeatRows=0, repeatCols=0)
t.setStyle(TableStyle([
('BACKGROUND', (0, 0), (0, 0), colors.red),
('BACKGROUND', (1, 0), (1, 0), colors.blue),
('ALIGN', (1, 0), (1, 0), 'RIGHT'),
]))
s.append(t)
# if subheader:
# print 'subheader'
self.head.addFromList(s, canvas)
def data_table(self, canvas, items):
# print 'data_table()'
d = [[u'col0', u'col1', u'col2', u'col3', u'col4', ],]
for item in items:
d.append([item.col0, item.col1, item.col2, item.col3, item.col4])
s = []
t = Table(d, colWidths=[20*mm, 100*mm, 20*mm, 20*mm, 30*mm], rowHeights=20*mm, style=None,\
splitByRow=1, repeatRows=0, repeatCols=0)
t.setStyle([('BACKGROUND', (0,0), (-1,0), ('#eeeeee'))])
h=187*mm #TODO
w=A4[0] - (2*MARGIN)
splitter = t.split(w, h)
# print '\n\nresult of splitting: ', len(splitter)
for i in splitter:
print 'i: ', i
self.dataframeX.addFromList(s, canvas)
s.append(t)
self.dataframe0.addFromList(s, canvas)
def on_first_page(self, canvas, doc):
canvas.saveState()
self.header(canvas)
self.data_table(canvas, self.items)
canvas.restoreState()
def on_next_pages(self, canvas, doc):
canvas.saveState()
self.header(canvas, subheader=False)
canvas.restoreState()
def build_pdf(self, thing=None, items=None, user=None):
self.thing = thing
self.items = items
self.doc = BaseDocTemplate('%s.pdf' % (thing.name),
pagesize=A4,
pageTemplates=[self.first_page, self.next_pages,],
showBoundary=1,
rightMargin=MARGIN,
leftMargin=MARGIN,
bottomMargin=MARGIN,
topMargin=MARGIN,
allowSplitting=1,
title='%s' % 'title')
self.story.append(Spacer(0*mm, 2*mm))
self.doc.build(self.story)
response = HttpResponse(mimetype='application/pdf')
response['Content-Disposition'] = 'attachment; filename=%s.pdf' % (reference)
return response
def __init__(self):
self.thing = None
self.items = None
self.story = []
#========== FRAMES ==========
self.head = Frame(x1=MARGIN, y1=A4[1] - (2*MARGIN), width=A4[0] - (2*MARGIN), height=10*mm,
leftPadding=0, bottomPadding=0, rightPadding=0, topPadding=0, id='header',
showBoundary=1)#, overlapAttachedSpace=None, _debug=None)
self.dataframe0 = Frame(x1=MARGIN, y1=10*mm, width=A4[0] - (2*MARGIN), height=187*mm,
leftPadding=0, bottomPadding=0, rightPadding=0, topPadding=0,
id='body', showBoundary=1)
self.dataframeX = Frame(x1=MARGIN, y1=MARGIN, width=A4[0] - (2*MARGIN), height=257*mm,
leftPadding=0, bottomPadding=0, rightPadding=0, topPadding=0,
id='body', showBoundary=1)
#========== PAGES ==========
self.first_page = PageTemplate(id='firstpage', frames=[self.head, self.dataframe0], onPage=self.on_first_page)
self.next_pages = PageTemplate(id='nextpages', frames=[self.head, self.dataframeX], onPage=self.on_next_pages)
Thank you in advance!!