Render an uploaded template to LaTeX

InvenTree/report/migrations/0004_auto_20200521_1217.py

@@ -0,0 +1,25 @@
+# Generated by Django 3.0.5 on 2020-05-21 12:17
+
+from django.db import migrations, models
+import report.models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('report', '0003_reportasset'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='reporttemplate',
+            name='filters',
+            field=models.CharField(blank=True, help_text='Query filters (comma-separated list of key=value pairs)', max_length=250, validators=[report.models.validate_filter_string]),
+        ),
+        migrations.AddField(
+            model_name='reporttemplate',
+            name='name',
+            field=models.CharField(default='Test', help_text='Template name', max_length=100, unique=True),
+            preserve_default=False,
+        ),
+    ]

InvenTree/report/models.py

@@ -12,6 +12,8 @@ from django.core.validators import FileExtensionValidator
 
 from django.utils.translation import gettext_lazy as _
 
+from django_tex.shortcuts import render_to_pdf
+
 
 def rename_template(instance, filename):
 
@@ -28,6 +30,28 @@ class ReportTemplate(models.Model):
     def __str__(self):
         return os.path.basename(self.template.name)
 
+    @property
+    def extension(self):
+        return os.path.splitext(self.template.name)[1].lower()
+
+    def render(self, request, context={}, **kwargs):
+        """
+        Render to template.
+        """
+
+        filename = kwargs.get('filename', 'report.pdf')
+
+        template = os.path.join('report_template', os.path.basename(self.template.name))
+
+        if 1 or self.extension == '.tex':
+            return render_to_pdf(request, template, context, filename=filename)
+
+    name = models.CharField(
+        blank=False, max_length=100,
+        help_text=_('Template name'),
+        unique=True,
+    )
+
     template = models.FileField(
         upload_to=rename_template,
         help_text=_("Report template file"),
@@ -36,6 +60,13 @@ class ReportTemplate(models.Model):
 
     description = models.CharField(max_length=250, help_text=_("Report template description"))
 
+    filters = models.CharField(
+        blank=True,
+        max_length=250,
+        help_text=_("Query filters (comma-separated list of key=value pairs)"),
+        validators=[validate_filter_string]
+    )
+
 
 def rename_asset(instance, filename):