- Create LaTeX template for substitutions PDF with django template engine

- Refactor a big part of PDF generation to new template (Missing: teacher, subject, room)
- Add template tag for setting variables dynamic in templates

.idea/school-apps.iml

@@ -25,6 +25,14 @@
     <orderEntry type="library" name="jquery" level="application" />
   </component>
   <component name="TemplatesService">
+    <option name="templateFileTypes">
+      <list>
+        <option value="HTML" />
+        <option value="XHTML" />
+        <option value="XML" />
+        <option value="LaTeX source file" />
+      </list>
+    </option>
     <option name="TEMPLATE_CONFIGURATION" value="Django" />
     <option name="TEMPLATE_FOLDERS">
       <list>

schoolapps/timetable/pdf.py

 import os
 import subprocess
 
+from django.template.loader import render_to_string
 from django.utils import timezone
 from django.utils import formats
 
@@ -144,60 +145,66 @@ def generate_class_tex(subs, date, header_info):
     tex_body = ""
 
     # Format dates
-    status_date = formats.date_format(date, format="j. F Y, \\K\\W W ")
-    current_date = formats.date_format(timezone.datetime.now(), format="j. F Y H:i")
-    head_date = formats.date_format(date, format="l, j. F Y")
+    # status_date = formats.date_format(date, format="j. F Y, \\K\\W W ")
+    # current_date = formats.date_format(timezone.datetime.now(), format="j. F Y H:i")
+    # head_date = formats.date_format(date, format="l, j. F Y")
 
     # Generate header with dates
-    tex_body += TEX_HEADER_CLASS % (status_date, current_date, head_date)
-
-    if header_info.is_box_needed():
-        tex_body += TEX_HEADER_BOX_START
-        for row in header_info.rows:
-            tex_body += TEX_HEADER_BOX_ROW_A % row[0]
-        tex_body += TEX_HEADER_BOX_MIDDLE
-        for row in header_info.rows:
-            tex_body += TEX_HEADER_BOX_ROW_B % row[1]
-        tex_body += TEX_HEADER_BOX_END
+    # tex_body += TEX_HEADER_CLASS % (status_date, current_date, head_date)
+
+    # if header_info.is_box_needed():
+    #     tex_body += TEX_HEADER_BOX_START
+    #     for row in header_info.rows:
+    #         tex_body += TEX_HEADER_BOX_ROW_A % row[0]
+    #     tex_body += TEX_HEADER_BOX_MIDDLE
+    #     for row in header_info.rows:
+    #         tex_body += TEX_HEADER_BOX_ROW_B % row[1]
+    #     tex_body += TEX_HEADER_BOX_END
     # Begin table
-    tex_body += TEX_TABLE_HEADER_CLASS
+    # tex_body += TEX_TABLE_HEADER_CLASS
 
-    color_background = True
-    last_classes = ""
+    # color_background = True
+    # last_classes = ""
     for sub in subs:
         # Color groups of classes in grey/white
-        if last_classes != sub.classes:
-            color_background = not color_background
+        # if last_classes != sub.classes:
+        #     color_background = not color_background
+        #
+        # last_classes = sub.classes
 
-        last_classes = sub.classes
-
-        if color_background:
-            tex_body += '\\rowcolor{grey}'
+        # if color_background:
+        #     tex_body += '\\rowcolor{grey}'
 
         # Get color tag for row
-        color = "\color{%s}" % sub.color
+        # color = "\color{%s}" % sub.color
 
         # Print classes
         # print(sub.classes)
-        tex_body += color
-        tex_body += '\\textbf{' + sub.classes + '} & '
+        # tex_body += color
+        # tex_body += '\\textbf{' + sub.classes + '} & '
 
         # Print lesson number, teacher, subject and room
         for i in [sub.lesson, sub.teacher, sub.subject, sub.room]:
-            tex_body += color
+            # tex_body += color
             tex_body += tex_replacer(i) + ' & '
 
         # Print badge (Cancellation)
-        if sub.badge is not None:
-            tex_body += """\\large\\badge{%s}""" % sub.badge
+        # if sub.badge is not None:
+        #     tex_body += """\\large\\badge{%s}""" % sub.badge
 
         # Print notice and new line
-        tex_body += color
-        tex_body += "\\Large\\textit{%s}\\\\\n" % (sub.text or "")
+        # tex_body += color
+        # tex_body += "\\Large\\textit{%s}\\\\\n" % (sub.text or "")
 
     # End table
-    tex_body += '\\end{longtable}'
+    # tex_body += '\\end{longtable}'
 
     # Connect header, body and footer
-    tex_content = TEX_HEADER + tex_body + TEX_FOOTER
-    return tex_content
+    # tex_content = TEX_HEADER + tex_body + TEX_FOOTER
+    # return tex_content
+    context = {
+        "subs": subs,
+        "date": date,
+        "header_info": header_info
+    }
+    return render_to_string("timetable/latex/substitutions.tex", context)

schoolapps/timetable/templates/timetable/latex/substitutions.tex

+{% load common %}
+
+\documentclass[11pt]{article}
+\usepackage[ngerman]{babel}
+\usepackage[sfdefault]{cabin}
+\usepackage[utf8]{inputenc}
+\usepackage[a4paper,left=1cm,right=1cm,top=2cm,bottom=2cm,bindingoffset=0mm]{geometry}
+
+% Packages
+\usepackage{fancyhdr}
+\usepackage{graphicx}
+\usepackage{longtable}
+\usepackage{multirow}
+\usepackage{color, colortbl}
+
+\usepackage{ulem, xpatch}
+\xpatchcmd{\sout}
+{\bgroup}
+{\bgroup\def\ULthickness{1.5pt}}
+{}{}
+
+% Badge box
+\usepackage{tcolorbox}
+\newtcbox{\badge}{nobeforeafter,colframe=green,colback=green,boxrule=0.5pt,arc=4pt,
+boxsep=0pt,left=5pt,right=5pt,top=5pt,bottom=5pt,tcbox raise base,
+grow to left by=0pt,
+grow to right by=-3pt,
+enlarge top by=3pt,
+enlarge bottom by=3pt,coltext=white}
+
+% Define colors
+\definecolor{grey}{RGB}{208, 208, 208}
+\definecolor{darkgrey}{rgb}{0.6,0.6,0.6}
+\definecolor{white}{rgb}{1,1,1}
+\definecolor{ green }{RGB}{76,175,80}
+\definecolor{green}{RGB}{76,175,80}
+\definecolor{ black }{RGB}{0,0,0}
+
+% Define header
+\pagestyle{fancy}
+
+% Left header: logo
+%\lhead{\includegraphics[width=5cm]{}}
+
+% Define footer
+\lfoot{Katharineum zu Lübeck}
+\cfoot{\thepage}
+\rfoot{\small Umsetzung: © 2018--2019 by Computer-AG}
+\rhead{\textbf{
+Vertretungen {{ date|date:"j. F Y, \\K\\W W"}}}\\
+Stand: {% now "j. F Y H:i" %}\\
+}
+
+\begin{document}
+    \Large
+    \subsubsection*{}
+    {#    \vspace{10pt}#}
+    \section*{\Huge Vertretungen {{ date|date:"l, j. F Y"}}}
+
+    {% if header_info.is_box_needed %}
+    \fbox{
+    \begin{tabular}{@{}ll@{}}
+    {% for row in header_info.rows %}
+        \textbf{ {{ row.0 }} } & {{ row.1 }} \\
+    {% endfor %}
+    \end{tabular}
+    }
+    {% endif %}
+
+    % Init table
+    {% set color_background = 1 %}
+    {% set last_classes = "" %}
+
+    \def\arraystretch{1.5}
+    \begin{longtable}{p{20mm}p{8mm}p{32mm}p{25mm}p{30mm}p{45mm}}
+        \textbf{Klassen} &
+        \textbf{Std.} &
+        \textbf{Lehrer} &
+        \textbf{Fach} &
+        \textbf{Raum} &
+        \textbf{Hinweis}\\
+        \hline
+        \endhead
+        {% for sub in subs %}
+
+        {# ------------------------------ #}
+        {#  Color groups of classes in grey/white #}
+        {% if last_classes != sub.classes %}
+
+        {% if color_background %}
+        {% set color_background = 0 %}
+        {% else %}
+        {% set color_background = 1 %}
+        {% endif %}
+
+        {% endif %}
+
+        {% set last_classes = sub.classes %}
+
+
+        {# Background color #}
+        {% if color_background %}
+        \rowcolor{grey}
+        {% endif %}
+
+        {# ------------------------------ #}
+
+        {% with c=sub.color %}
+        {#  Display classes #}
+        \color{ {{c}} }
+        \textbf{ {{ sub.classes }} } &
+
+        {# Display lesson number #}
+        \color{ {{c}} }
+        {{ sub.lesson }} &
+
+        \color{ {{c}} }
+        lehrer &
+
+        \color{ {{c}} }
+        fach &
+
+        \color{ {{c}} }
+        raum &
+
+        {# Display badge (for cancellations) #}
+        {% if sub.badge %}
+        \large\badge{ {{ sub.badge }} }
+        {% endif %}
+
+        {# Display notice and new line #}
+        \color{ {{c}} }
+        \Large\textit{ {{sub.text|default:""}} } \\
+    {% endwith %}
+    {% endfor %}
+    \end{longtable}
+
+\end{document}
\ No newline at end of file

schoolapps/timetable/templatetags/common.py

+from django import template
+
+register = template.Library()
+
+
+class SetVarNode(template.Node):
+
+    def __init__(self, var_name, var_value):
+        self.var_name = var_name
+        self.var_value = var_value
+
+    def render(self, context):
+        try:
+            value = template.Variable(self.var_value).resolve(context)
+        except template.VariableDoesNotExist:
+            value = ""
+        context[self.var_name] = value
+
+        return u""
+
+
+@register.tag(name='set')
+def set_var(parser, token):
+    """
+    {% set some_var = '123' %}
+    """
+    parts = token.split_contents()
+    if len(parts) < 4:
+        raise template.TemplateSyntaxError("'set' tag must be of the form: {% set <var_name> = <var_value> %}")
+
+    return SetVarNode(parts[1], parts[3])