Revoke support for LaTex reporting

InvenTree/InvenTree/settings.py

@@ -208,7 +208,6 @@ INSTALLED_APPS = [
     'mptt',                                 # Modified Preorder Tree Traversal
     'markdownx',                            # Markdown editing
     'markdownify',                          # Markdown template rendering
-    'django_tex',                           # LaTeX output
     'django_admin_shell',                   # Python shell for the admin interface
     'djmoney',                              # django-money integration
     'djmoney.contrib.exchange',             # django-money exchange rates
@@ -265,14 +264,6 @@ TEMPLATES = [
             ],
         },
     },
-    # Backend for LaTeX report rendering
-    {
-        'NAME': 'tex',
-        'BACKEND': 'django_tex.engine.TeXEngine',
-        'DIRS': [
-            os.path.join(MEDIA_ROOT, 'report'),
-        ]
-    },
 ]
 
 REST_FRAMEWORK = {
@@ -485,22 +476,6 @@ DATE_INPUT_FORMATS = [
     "%Y-%m-%d",
 ]
 
-# LaTeX rendering settings (django-tex)
-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
-LATEX_INTERPRETER = LATEX_SETTINGS.get('interpreter', 'pdflatex')
-
-LATEX_INTERPRETER_OPTIONS = LATEX_SETTINGS.get('options', '')
-
-LATEX_GRAPHICSPATH = [
-    # Allow LaTeX files to access the report assets directory
-    os.path.join(MEDIA_ROOT, "report", "assets"),
-]
-
 # crispy forms use the bootstrap templates
 CRISPY_TEMPLATE_PACK = 'bootstrap3'
 

InvenTree/config_template.yaml

@@ -107,19 +107,6 @@ static_root: '../inventree_static'
 # If unspecified, the local user's temp directory will be used
 #backup_dir: '/home/inventree/backup/'
 
-# LaTeX report rendering
-# InvenTree uses the django-tex plugin to enable LaTeX report rendering
-# Ref: https://pypi.org/project/django-tex/
-# Note: Ensure that a working LaTeX toolchain is installed and working *before* starting the server
-latex:
-  # Select the LaTeX interpreter to use for PDF rendering
-  # Note: The intepreter needs to be installed on the system!
-  # e.g. to install pdflatex: apt-get texlive-latex-base
-  enabled: False
-  interpreter: pdflatex 
-  # Extra options to pass through to the LaTeX interpreter
-  options: ''
-
 # Permit custom authentication backends
 #authentication_backends:
 #  - 'django.contrib.auth.backends.ModelBackend'

InvenTree/report/migrations/0007_auto_20210204_1617.py

@@ -0,0 +1,20 @@
+# Generated by Django 3.0.7 on 2021-02-04 05:17
+
+import django.core.validators
+from django.db import migrations, models
+import report.models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('report', '0006_reportsnippet'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='testreport',
+            name='template',
+            field=models.FileField(help_text='Report template file', upload_to=report.models.rename_template, validators=[django.core.validators.FileExtensionValidator(allowed_extensions=['html', 'htm'])], verbose_name='Template'),
+        ),
+    ]

InvenTree/report/models.py

@@ -14,7 +14,6 @@ from django.db import models
 from django.conf import settings
 
 from django.core.validators import FileExtensionValidator
-from django.core.exceptions import ValidationError
 
 import stock.models
 
@@ -29,17 +28,6 @@ except OSError as 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
-        from django_tex.core import render_template_with_context
-        from django_tex.exceptions import TexError
-    except OSError as err:
-        print("OSError: {e}".format(e=err))
-        print("You may not have a working LaTeX toolchain installed?")
-        sys.exit(1)
-
 from django.http import HttpResponse
 
 
@@ -104,7 +92,7 @@ class ReportBase(models.Model):
     def template_name(self):
         """
         Returns the file system path to the template file.
-        Required for passing the file to an external process (e.g. LaTeX)
+        Required for passing the file to an external process
         """
 
         template = os.path.join('report_template', self.getSubdir(), os.path.basename(self.template.name))
@@ -124,7 +112,7 @@ class ReportBase(models.Model):
         upload_to=rename_template,
         verbose_name=_('Template'),
         help_text=_("Report template file"),
-        validators=[FileExtensionValidator(allowed_extensions=['html', 'htm', 'tex'])],
+        validators=[FileExtensionValidator(allowed_extensions=['html', 'htm'])],
     )
 
     description = models.CharField(
@@ -153,12 +141,11 @@ class ReportTemplateBase(ReportBase):
         """
         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
+        Uses django-weasyprint plugin to render HTML template against Weasyprint
         """
 
-        filename = kwargs.get('filename', 'report.pdf')
+        # TODO: Support custom filename generation!
+        # filename = kwargs.get('filename', 'report.pdf')
 
         context = self.get_context_data(request)
 
@@ -171,31 +158,17 @@ class ReportTemplateBase(ReportBase):
         context['date'] = datetime.datetime.now().date()
         context['datetime'] = datetime.datetime.now()
 
-        if self.extension == '.tex':
-            # Render LaTeX template to PDF
-            if settings.LATEX_ENABLED:
-                # Attempt to render to LaTeX template
-                # If there is a rendering error, return the (partially rendered) template,
-                # so at least we can debug what is going on
-                try:
-                    rendered = render_template_with_context(self.template_name, context)
-                    return render_to_pdf(request, self.template_name, context, filename=filename)
-                except TexError:
-                    return TexResponse(rendered, filename="error.tex")
-            else:
-                raise ValidationError("Enable LaTeX support in config.yaml")
-        elif self.extension in ['.htm', '.html']:
-            # Render HTML template to PDF
-            wp = WeasyprintReportMixin(
-                request,
-                self.template_name,
-                base_url=request.build_absolute_uri("/"),
-                presentational_hints=True,
-                **kwargs)
+        # Render HTML template to PDF
+        wp = WeasyprintReportMixin(
+            request,
+            self.template_name,
+            base_url=request.build_absolute_uri("/"),
+            presentational_hints=True,
+            **kwargs)
 
-            return wp.render_to_response(
-                context,
-                **kwargs)
+        return wp.render_to_response(
+            context,
+            **kwargs)
 
     enabled = models.BooleanField(
         default=True,

requirements.txt

@@ -23,7 +23,6 @@ coverage==5.3                   # Unit test coverage
 coveralls==2.1.2                # Coveralls linking (for Travis)
 rapidfuzz==0.7.6                # Fuzzy string matching
 django-stdimage==5.1.1          # Advanced ImageField management
-django-tex==1.1.7               # LaTeX PDF export
 django-weasyprint==1.0.1        # HTML PDF export
 django-debug-toolbar==2.2       # Debug / profiling toolbar
 django-admin-shell==0.1.2       # Python shell for the admin interface