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Merge pull request #833 from SchrodingersGat/latex-fix

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Catch some errors related to missing system packages
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Oliver 2020-05-25 15:13:33 +10:00 committed by GitHub
commit 835451c02c
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3 changed files with 30 additions and 6 deletions
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9
InvenTree/InvenTree/settings.py
View File

@ -351,12 +351,15 @@ DATE_INPUT_FORMATS = [
] ]
# LaTeX rendering settings (django-tex) # LaTeX rendering settings (django-tex)
latex_settings = CONFIG.get('latex', {}) LATEX_SETTINGS = CONFIG.get('latex', {})
# Is LaTeX rendering enabled? (Off by default)
LATEX_ENABLED = LATEX_SETTINGS.get('enabled', False)
# Set the latex interpreter in the config.yaml settings file # Set the latex interpreter in the config.yaml settings file
LATEX_INTERPRETER = latex_settings.get('interpreter', 'pdflatex') LATEX_INTERPRETER = LATEX_SETTINGS.get('interpreter', 'pdflatex')
LATEX_INTERPRETER_OPTIONS = latex_settings.get('options', '') LATEX_INTERPRETER_OPTIONS = LATEX_SETTINGS.get('options', '')
LATEX_GRAPHICSPATH = [ LATEX_GRAPHICSPATH = [
# Allow LaTeX files to access the report assets directory # Allow LaTeX files to access the report assets directory

2
InvenTree/config_template.yaml
View File

@ -77,10 +77,12 @@ sentry:
# LaTeX report rendering # LaTeX report rendering
# InvenTree uses the django-tex plugin to enable LaTeX report rendering # InvenTree uses the django-tex plugin to enable LaTeX report rendering
# Ref: https://pypi.org/project/django-tex/ # Ref: https://pypi.org/project/django-tex/
# Note: Ensure that a working LaTeX toolchain is installed and working *before* starting the server
latex: latex:
# Select the LaTeX interpreter to use for PDF rendering # Select the LaTeX interpreter to use for PDF rendering
# Note: The intepreter needs to be installed on the system! # Note: The intepreter needs to be installed on the system!
# e.g. to install pdflatex: apt-get texlive-latex-base # e.g. to install pdflatex: apt-get texlive-latex-base
enabled: False
interpreter: pdflatex interpreter: pdflatex
# Extra options to pass through to the LaTeX interpreter # Extra options to pass through to the LaTeX interpreter
options: '' options: ''

25
InvenTree/report/models.py
View File

@ -6,8 +6,11 @@ Report template model definitions
from __future__ import unicode_literals from __future__ import unicode_literals
import os import os
import sys
from django.db import models from django.db import models
from django.conf import settings
from django.core.validators import FileExtensionValidator from django.core.validators import FileExtensionValidator
from django.core.exceptions import ValidationError from django.core.exceptions import ValidationError
@ -15,8 +18,21 @@ from django.utils.translation import gettext_lazy as _
from part import models as PartModels from part import models as PartModels
from django_tex.shortcuts import render_to_pdf try:
from django_weasyprint import WeasyTemplateResponseMixin from django_weasyprint import WeasyTemplateResponseMixin
except OSError as err:
print("OSError: {e}".format(e=err))
print("You may require some further system packages to be installed.")
sys.exit(1)
# Conditional import if LaTeX templating is enabled
if settings.LATEX_ENABLED:
try:
from django_tex.shortcuts import render_to_pdf
except OSError as err:
print("OSError: {e}".format(e=err))
print("You may not have a working LaTeX toolchain installed?")
sys.exit(1)
def rename_template(instance, filename): def rename_template(instance, filename):
@ -137,7 +153,10 @@ class ReportTemplateBase(models.Model):
if self.extension == '.tex': if self.extension == '.tex':
# Render LaTeX template to PDF # Render LaTeX template to PDF
return render_to_pdf(request, self.template_name, context, filename=filename) if settings.LATEX_ENABLED:
return render_to_pdf(request, self.template_name, context, filename=filename)
else:
return ValidationError("Enable LaTeX support in config.yaml")
elif self.extension in ['.htm', '.html']: elif self.extension in ['.htm', '.html']:
# Render HTML template to PDF # Render HTML template to PDF
wp = WeasyprintReportMixin(request, self.template_name, **kwargs) wp = WeasyprintReportMixin(request, self.template_name, **kwargs)