中拆分超过1页的表我试图在2页或更多页面上拆分“全角”表。我使用ReportLab和BaseDocTemplate类的Platypus库。在Reportlab
我有一个“全宽”元素表,如果表中有足够的行,这应该被绘制到第一页的框架中。应该在第二页继续。我的问题是,第一页的框架的高度和位置与其他页面不同,因为在第一页的顶部,我需要显示更多信息(是的...我正在讨论发票或订单)。
经过数千次尝试后,我所得到的只是一个带有唯一页面的pdf,只有8个项目/行,这正是他们在第一页需要的空间,但是如果该表有多于8行,然后我得到只有1页,没有表(这意味着一个空框架,虽然我看到日志中的所有数据)的PDF。
我已经使用了方法split()和wrap(),但可能以错误的方式,因为我是新的ReportLab。我向你展示我的代码的最后一个版本:
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)
预先感谢您!
非常感谢您的回答!现在我可以看到我的方式是错误的,而且你说得对,现在我可以看到,如你所说,我在框架中添加了一个空列表。明天我会尝试优化这段代码。 非常感谢! –