inventree/InvenTree
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Code

Option for rendering HTML template

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This commit is contained in:
Oliver Walters 2020-05-21 23:41:47 +10:00
parent c3dcabcaad
commit b93ba6339a
2 changed files with 36 additions and 6 deletions
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38
InvenTree/report/models.py
View File

@ -13,6 +13,7 @@ from django.core.validators import FileExtensionValidator
from django.utils.translation import gettext_lazy as _ from django.utils.translation import gettext_lazy as _
from django_tex.shortcuts import render_to_pdf from django_tex.shortcuts import render_to_pdf
from django_weasyprint import WeasyTemplateResponseMixin
def rename_template(instance, filename): def rename_template(instance, filename):
@ -22,6 +23,21 @@ def rename_template(instance, filename):
return os.path.join('report', 'report_template', filename) return os.path.join('report', 'report_template', filename)
class WeasyprintReportMixin(WeasyTemplateResponseMixin):
"""
Class for rendering a HTML template to a PDF.
"""
pdf_filename = 'report.pdf'
pdf_attachment = True
def __init__(self, request, template, **kwargs):
self.request = request
self.template_name = template
self.pdf_filename = kwargs.get('filename', 'report.pdf')
class ReportTemplate(models.Model): class ReportTemplate(models.Model):
""" """
Reporting template model. Reporting template model.
@ -34,17 +50,29 @@ class ReportTemplate(models.Model):
def extension(self): def extension(self):
return os.path.splitext(self.template.name)[1].lower() return os.path.splitext(self.template.name)[1].lower()
@property
def template_name(self):
return os.path.join('report_template', os.path.basename(self.template.name))
def render(self, request, context={}, **kwargs): def render(self, request, context={}, **kwargs):
""" """
Render to template. Render the template to a PDF file.
Supported template formats:
.tex - Uses django-tex plugin to render LaTeX template against an installed LaTeX engine
.html - Uses django-weasyprint plugin to render HTML template against Weasyprint
""" """
filename = kwargs.get('filename', 'report.pdf') filename = kwargs.get('filename', 'report.pdf')
template = os.path.join('report_template', os.path.basename(self.template.name)) context['request'] = request
if self.extension == '.tex':
return render_to_pdf(request, self.template_name, context, filename=filename)
elif self.extension in ['.htm', '.html']:
wp = WeasyprintReportMixin(request, self.template_name, **kwargs)
return wp.render_to_response(context, **kwargs)
if 1 or self.extension == '.tex':
return render_to_pdf(request, template, context, filename=filename)
name = models.CharField( name = models.CharField(
blank=False, max_length=100, blank=False, max_length=100,
@ -55,7 +83,7 @@ class ReportTemplate(models.Model):
template = models.FileField( template = models.FileField(
upload_to=rename_template, upload_to=rename_template,
help_text=_("Report template file"), help_text=_("Report template file"),
validators=[FileExtensionValidator(allowed_extensions=['html', 'tex'])], validators=[FileExtensionValidator(allowed_extensions=['html', 'htm', 'tex'])],
) )
description = models.CharField(max_length=250, help_text=_("Report template description")) description = models.CharField(max_length=250, help_text=_("Report template description"))

2
requirements.txt
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@ -20,3 +20,5 @@ coverage==4.0.3 # Unit test coverage
python-coveralls==2.9.1 # Coveralls linking (for Travis) python-coveralls==2.9.1 # Coveralls linking (for Travis)
rapidfuzz==0.7.6 # Fuzzy string matching rapidfuzz==0.7.6 # Fuzzy string matching
django-stdimage==5.1.1 # Advanced ImageField management django-stdimage==5.1.1 # Advanced ImageField management
django-tex==1.1.7 # LaTeX PDF export
django-weasyprint==1.0.1 # HTML PDF export