implement pre_render for coursebook and latex templates

Author: tobi-werner

content/templates/content/export/Image.tex

@@ -1,2 +1,15 @@
-\textbf{This is an image}
-{{content.description}}
+{% load cc_export_tags %}
+{% autoescape off %}
+
+\textbf{ {{content.description}} }
+{{content.imagecontent.image.path|tex_escape}}
+
+\includegraphics{ {{ content.imagecontent.image.path }} }
+
+%\begin{figure}[H]
+%\centering
+%\includegraphics[width=\textwidth ext=.png]{ {{ content.imagecontent.image.url }} }
+%\caption{ {{content.description}} }
+%\end{figure}
+
+{% endautoescape %}

content/templates/content/export/YouTubeVideo.tex

@@ -1 +1,2 @@
-\textbf{This is a YouTube video}
+\textbf{This is a YouTube video}
+\href{ {{ content.ytvideocontent.url }} }{ {{ content.ytvideocontent.url }} }

content/templates/content/export/base.tex

@@ -6,6 +6,10 @@
 \usepackage[utf8]{inputenc}
 \usepackage[T1]{fontenc}
 \usepackage[ngerman]{babel}
+\usepackage{graphicx}
+\usepackage{float}
+\usepackage{grffile}
+\usepackage{hyperref}
 \usepackage[left=1cm, right=1cm, top=2cm, bottom=2cm]{geometry}
 
 \begin{document}
@@ -14,10 +18,8 @@
     \author{ {{user|tex_escape}} }
     \maketitle
 
-    {% for content in contents %}
-        \input{ {{ content.type|export_template }} }
-    {% endfor %}
-
-\end{document}
+%    {% for content in contents %}
+%        \input{ {{ content.type|export_template }} }
+%    {% endfor %}
 
 {% endautoescape %}

export/helper_functions.py

@@ -5,16 +5,27 @@
 
 from django.template.loader import get_template
 
+from export.templatetags.cc_export_tags import export_template
+
 
 class LaTeX:
-    """
-    https://github.com/d120/pyophase/blob/master/ophasebase/helper.py
-    Retrieved 10.08.2020
-    """
+
+    encoding = 'utf-8'
+
     @staticmethod
     def render(context, template_name, assets, app='export', external_assets=None):
+        """
+        https://github.com/d120/pyophase/blob/master/ophasebase/helper.py
+        Retrieved 10.08.2020
+        """
+
         template = get_template(template_name)
-        rendered_tpl = template.render(context).encode('utf-8')
+        rendered_tpl = template.render(context).encode(LaTeX.encoding)
+        # prerender content templates
+        for content in context['contents']:
+            rendered_tpl += LaTeX.pre_render(content)
+        rendered_tpl += "\end{document}".encode(LaTeX.encoding)
+
         with tempfile.TemporaryDirectory() as tempdir:
             # for asset in assets:
             #     shutil.copy(os.path.dirname(os.path.realpath(__file__)) + '/../' + app + '/assets/' + asset, tempdir)
@@ -29,3 +40,11 @@ def render(context, template_name, assets, app='export', external_assets=None):
             except FileNotFoundError:
                 pdf = None
         return pdf, pdflatex_output
+
+    @staticmethod
+    def pre_render(content):
+        template = get_template(export_template(content.type))
+        context = {'content': content}
+        print(content.imagecontent.image.url)
+        return template.render(context).encode(LaTeX.encoding)
+

frontend/templates/frontend/coursebook/rendering-error.html

@@ -9,4 +9,5 @@
 {% block content %}
     <h1>Error</h1>
     <p>An error occured while generating your coursebook.</p>
+    <p>{{ content }}</p>
 {% endblock %}