PDF generation advanced configuration¶
In order to redefine the PDF layout you must create a new function in /var/webapps/fleio/project/fleio/settings.py. For this example we will call it pdf_invoice_new. Once the new function is created you can modify it to change the default PDF layout.
def footer_pagination(canvas, doc):
canvas.saveState()
canvas.translate(0, 0)
canvas.setFont('Helvetica-Bold', 6)
width, height = pagesizes.A4
canvas.drawCentredString(width / 2, cm, "Page {}".format(doc.page))
canvas.restoreState()
def pdf_invoice_new(
pdf_file, invoice_display_number, invoice_status, customer_details, company_details,
invoice_items, invoice_totals, invoice_issue_date=None, invoice_due_date=None,
text_after_invoice_items=None, invoice_title=None, invoice_author=None, invoice_creator=None,
invoice_lang=None, invoice_subject=None, invoice_currency='',
):
# Define paragraph styles
title_style = ParagraphStyle(name='invTitleStyle',
fontName='Helvetica-Bold',
fontSize=16,
textColor='#404040',
testTransform='upper',
leading=20)
sub_title_style = ParagraphStyle(name='invTitleStyle',
fontName='Helvetica-Bold',
fontSize=8,
leading=10,
textColor='#404040',
testTransform='upper')
norm_style = ParagraphStyle(name='invNormStyle',
fontName='Helvetica',
textColor='#606060',
fontSize=8,
leading=10)
norm_style_bold = ParagraphStyle(name='invNormStyle',
fontName='Helvetica-Bold',
textColor='#606060',
fontSize=8,
leading=10)
totals_style_bold = ParagraphStyle(name='invNormStyle',
fontName='Helvetica-Bold',
textColor='#000000',
fontSize=8,
leading=10,
alignment=enums.TA_RIGHT)
cost_style = ParagraphStyle(name='invCostStyle',
fontName='Helvetica',
textColor='#000000',
fontSize=8,
leading=10,
alignment=enums.TA_CENTER)
norm_style_right = ParagraphStyle(name='invNormStyleRight',
fontName='Helvetica',
textColor='#606060',
fontSize=8,
leading=10,
alignment=enums.TA_RIGHT)
head_style = ParagraphStyle(name='headStyle',
fontName='Helvetica',
textColor='#ffffff',
backColor='#404040',
fontSize=10,
leading=12)
# Begin invoice pdf generation
invoice_title = invoice_title or invoice_display_number
invoice_author = invoice_author or 'Fleio Billing'
invoice_creator = invoice_creator or 'Fleio Billing'
invoice_lang = invoice_lang or 'en'
invoice_subject = invoice_subject or '{} {}'.format(invoice_display_number, invoice_status)
doc = SimpleDocTemplate(pdf_file,
pagesize=pagesizes.A4,
leftMargin=cm,
rightMargin=cm,
topMargin=cm,
bottomMargin=cm,
title=invoice_title,
author=invoice_author,
creator=invoice_creator,
lang=invoice_lang,
subject=invoice_subject)
# noinspection PyListCreation
pdf_story = [Spacer(1, cm)]
# Add invoice display number and header
pdf_story.append(Paragraph(invoice_display_number, style=title_style))
pdf_story.append(Paragraph(invoice_status, style=sub_title_style))
pdf_story.append(Spacer(1, cm / 3))
# Add customer and company info
customer_paragraph = []
# adds issue and due dates
if invoice_issue_date:
customer_paragraph.append(Paragraph(_('Issue Date: {}').format(invoice_issue_date), norm_style))
if invoice_due_date:
customer_paragraph.append(Paragraph(_('Due Date: {}').format(invoice_due_date), norm_style))
# adds customer info
customer_paragraph.append(Paragraph(_('Invoiced to:'), norm_style_bold))
customer_details = customer_details or 'Customer details missing'
for cinf in customer_details.splitlines():
customer_paragraph.append(Paragraph(cinf, norm_style))
# adds company info
company_details = company_details or 'Company details missing'
company_paragraph = [Paragraph(cinf, norm_style_right) for cinf in company_details.splitlines()]
invoice_info = Table(data=[[customer_paragraph, company_paragraph]],
style=[('VALIGN', (0, 0), (-1, -1), 'TOP'),
('LEFTPADDING', (0, 0), (0, 0), 0),
('RIGHTPADDING', (0, 0), (-1, -1), 0)])
pdf_story.append(invoice_info)
# Add invoice items
# Set some items styles first
table_style = [('BACKGROUND', (0, 0), (-1, 0), '#404040'),
('ALIGN', (3, 0), (-1, -1), 'CENTER'),
('VALIGN', (3, 0), (-1, -1), 'MIDDLE'),
('TEXTCOLOR', (1, 0), (-1, 0), '#ffffff'),
('SPAN', (0, 0), (2, 0)),
('LINEAFTER', (0, 1), (-2, -len(invoice_totals) - 1), 0.1, '#707070', None, (2, 2, 2)),
('LINEBELOW', (0, 1), (-1, -len(invoice_totals) - 1), 0.1, '#707070', None, (2, 2, 2))]
items_table = []
items_header = [Paragraph(_('Description'), head_style), '', '', _('Quantity'), _('Unit Price'), _('Cost')]
items_table.append(items_header)
last_item_num = 1
for item in invoice_items:
item_description = item['description']
for option in item.get('options', []):
item_description = '{} <br/> - {}'.format(item_description, option['display'])
if option.get('price', 0) > 0:
item_description = '{} ({} {})'.format(item_description, option['price'], invoice_currency)
items_table.append([Paragraph(item_description, norm_style), '', '',
Paragraph(str(item.get('quantity', '1')), cost_style),
Paragraph(str(item.get('unit_price')), cost_style),
Paragraph(str(item.get('cost')), cost_style)])
table_style.append(('SPAN', (0, last_item_num), (2, last_item_num)))
last_item_num += 1
# Add totals
for inv_total in invoice_totals:
items_table.append(['', '', '', '',
Paragraph(str(inv_total['name']), totals_style_bold),
Paragraph(str(inv_total['value']), cost_style)])
table_style.append(('LINEAFTER', (4, last_item_num), (-2, -1), 0.1, '#707070', None, (2, 2, 2)))
table_style.append(('LINEBELOW', (4, last_item_num), (-1, -2), 0.1, '#707070', None, (2, 2, 2)))
invoice_items_table = Table(data=items_table,
style=table_style)
pdf_story.append(invoice_items_table)
if text_after_invoice_items:
pdf_story.append(Paragraph(text=text_after_invoice_items, style=norm_style))
doc.build(pdf_story, onFirstPage=footer_pagination, onLaterPages=footer_pagination)
After you create the function you will also have to solve dependencies, by adding the following lines at the begginning of the settings.py file:
from reportlab.lib import enums, pagesizes
from reportlab.lib.styles import ParagraphStyle
from reportlab.lib.units import cm
from reportlab.platypus import SimpleDocTemplate, Spacer, Paragraph, Table
from django.utils.translation import ugettext_lazy as _
Finally, add the following line after the function that you added earlier and restart fleio, celery and uwsgi services:
PDF_INVOICE_CALLABLE = pdf_invoice_new