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"""
gestion.views_graph, un module pour SLM
- manipulation de données visualisées comme des graphes
Copyright (C) 2025 Georges Khaznadar <georgesk@debian.org>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
from .views_common import render_common
from django.utils.translation import gettext_lazy as _
from .models import Classes, Niveaux, Filieres, Digraphe, Digraphe_select
def essai_svg(request):
"""
page expérimentale pour bricoler des graphes de dépendances
"""
left_vertices = Digraph_Query(
Classes.classes_importantes, "libelle", "libelle").vertices()
right_vertices = Digraph_Query(
Niveaux.objects.all, "libelle", "libelle", "libelle").vertices()
return render_common(
request,
'gestion/essai_svg.html',
_("essai SVG"),
{
"aide": "",
"left_vertices": left_vertices,
"right_vertices": right_vertices,
})
def svg_from_dot(request):
"""
Produit un page avec un graphe, et des outils pour le manipuler
le POST contient digraphe, le nom d'un digraphe (instance de
Digraph_select, qui fournit de quoi selectionner des descriptions
de noeuds, et qui est référencée par une instance de Digraph, qui
a une date de création et un digraphe codé en langage DOT)
"""
digraphe_name = request.POST.get("digraphe","essai")
"momentanément ..."
essai = Digraphe.objects.filter(
select__name=digraphe_name,
).order_by('-date_creation')[0]
svg_elts = essai.to_svg()
lr_query = essai.select.lr_query()
return render_common(
request,
'gestion/svg_from_dot.html',
_("SVG depuis DOT"),
{
"aide": "",
"svg_elts" : svg_elts,
"lr_query": lr_query,
})
def digraphe_select(request):
"""
Page permettant à un administrateur d'éditer les sélecteurs pour digraphes
et de créer des digraphes
"""
dgsels = Digraphe_select.objects.all()
collection = {}
for dgsel in dgsels:
dgs = Digraphe.objects.filter(select=dgsel)
collection[dgsel.name] = {
"select": dgsel.id,
"dgs": [d.id for d in dgs],
}
return render_common(
request,
'gestion/digraphe_select.html',
_("Gestion des digraphes"),
{
"aide": "digraphes",
"collection": collection,
})
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