266 lines
9.3 KiB
Python
266 lines
9.3 KiB
Python
# coding: utf-8
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from datetime import date
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from django import forms
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from django.contrib.auth.decorators import login_required
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from django.conf import settings
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from django.core.cache import cache
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from django.core.paginator import Paginator
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from django.db.models import Q, Case, When
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from django.http import JsonResponse, HttpResponseBadRequest
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from django.shortcuts import render, redirect, get_object_or_404
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import json
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import logging
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USE_ELASTICSEARCH = getattr(settings, "USE_ELASTICSEARCH", True)
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if USE_ELASTICSEARCH:
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from .documents import StageDocument
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from .decorators import en_scolarite_required
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from .models import Stage
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from .statics import TYPE_LIEU_OPTIONS, TYPE_STAGE_OPTIONS, NIVEAU_SCOL_OPTIONS
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logger = logging.getLogger("recherche")
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# Recherche
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class SearchForm(forms.Form):
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generique = forms.CharField(required=False)
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sujet = forms.CharField(label=u'À propos de', required=False)
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contexte = forms.CharField(label=u'Contexte (lieu, encadrant⋅e⋅s, structure)',
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required=False)
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apres_annee = forms.IntegerField(label=u'Après cette année', required=False)
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avant_annee = forms.IntegerField(label=u'Avant cette année', required=False)
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type_stage = forms.ChoiceField(label="Type de stage", choices=([('', u'')]
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+ list(TYPE_STAGE_OPTIONS)),
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required=False)
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niveau_scol = forms.ChoiceField(label="Année d'étude", choices=([('', u'')]
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+ list(NIVEAU_SCOL_OPTIONS)),
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required=False)
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type_lieu = forms.ChoiceField(label=u"Type de lieu d'accueil",
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choices=([('', u'')]
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+ list(TYPE_LIEU_OPTIONS)),
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required=False)
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tri = forms.ChoiceField(label=u'Tri par',
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choices=[('pertinence', u'Pertinence'),
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('-date_maj',u'Dernière mise à jour')],
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required=False, initial='pertinence')
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def cherche(**kwargs):
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filtres = Q(public=True)
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use_dsl = False
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def field_relevant(field, test_string=True):
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return field in kwargs and \
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kwargs[field] is not None and \
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((not test_string) or kwargs[field].strip() != '')
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if USE_ELASTICSEARCH:
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dsl = StageDocument.search()
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#
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# Recherche libre AVEC ELASTICSEARCH
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#
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# Champ générique : recherche dans tous les champs
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if field_relevant("generique"):
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#print("Filtre generique", kwargs['generique'])
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dsl = dsl.query(
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"multi_match",
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query = kwargs["generique"],
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fuzziness = "auto",
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fields = [
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'sujet^3',
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'encadrants',
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'type_stage',
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'niveau_scol',
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'structure',
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"lieux.*^2",
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"auteur.nom^2",
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"thematiques^2",
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"matieres"
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])
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use_dsl = True
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# Sujet -> Recherche dan les noms de sujets et les thématiques
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if field_relevant("sujet"):
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dsl = dsl.query("multi_match",
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query = kwargs["sujet"],
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fields = ['sujet^2', 'thematiques', 'matieres'],
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fuzziness = "auto")
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use_dsl = True
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# Contexte -> Encadrants, structure, lieu
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if field_relevant("contexte"):
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dsl = dsl.query("multi_match",
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query = kwargs["contexte"],
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fields = ['encadrants', 'structure^2',
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'lieux.nom', 'lieux.pays', 'lieux.ville'],
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fuzziness = "auto")
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use_dsl = True
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else:
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# Sans ElasticSearch, on active quand même une approximation de
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# recherche en base de données
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if field_relevant("generique"):
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generique = kwargs["generique"]
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filtres = (Q(sujet__icontains=generique)
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| Q(thematiques__name__icontains=generique)
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| Q(matieres__nom__icontains=generique)
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| Q(lieux__nom__icontains=generique))
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# Autres champs -> non fonctionnels
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if field_relevant("sujet") or field_relevant("contexte"):
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raise NotImplementedError(
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"ElasticSearch doit être activé pour ce type de recherche")
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#
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# Filtres directs db
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#
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# Dates
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if field_relevant('avant_annee', False):
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dte = date(kwargs['avant_annee']+1, 1, 1)
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filtres &= Q(date_fin__lt=dte)
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if field_relevant('apres_annee', False):
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dte = date(kwargs['apres_annee'], 1, 1)
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filtres &= Q(date_debut__gte=dte)
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# Type de stage
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if field_relevant('type_stage'):
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filtres &= Q(type_stage=kwargs["type_stage"])
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if field_relevant('niveau_scol'):
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filtres &= Q(niveau_scol=kwargs["niveau_scol"])
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# Type de lieu
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if field_relevant('type_lieu'):
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filtres &= Q(lieux__type_lieu=kwargs["type_lieu"])
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# Tri
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tri = "pertinence"
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if field_relevant('tri') and kwargs['tri'] in ['-date_maj']:
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tri = kwargs['tri']
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if not use_dsl:
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tri = "-date_maj"
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# Application
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resultat = Stage.objects.filter(filtres).distinct()
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if USE_ELASTICSEARCH and use_dsl:
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dsl_res = [s.meta.id for s in dsl.scan()]
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resultat = resultat.filter(id__in=dsl_res)
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if tri == "pertinence":
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resultat = resultat.order_by(
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Case(
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*[When(pk=pk, then=pos) for pos, pk in enumerate(dsl_res)]
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)
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)
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else:
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resultat = resultat.order_by(tri)
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return resultat, tri
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@login_required
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@en_scolarite_required
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def recherche(request):
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form = SearchForm()
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return render(request, 'avisstage/recherche/recherche.html',
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{"form": form})
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@login_required
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@en_scolarite_required
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def recherche_resultats(request):
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stages = []
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tri = ''
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vue = 'vue-liste'
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lieux = []
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stageids = []
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if request.method == "GET":
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form = SearchForm(request.GET)
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if form.is_valid():
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page = request.GET.get("page", 1)
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search_args = form.cleaned_data
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# Gestion du cache
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lsearch_args = {key: val for key, val in search_args.items()
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if val != "" and val is not None}
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cache_key = json.dumps(lsearch_args, sort_keys=True)
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cached = cache.get(cache_key)
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if cached is None:
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# Requête effective
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stages, tri = cherche(**search_args)
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stageids = list(stages.values_list('id', flat=True))
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lieux = [[stageid, lieuid] for (stageid, lieuid)
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in stages.values_list('id', 'lieux')
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if lieuid is not None]
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# Sauvegarde dans le cache
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to_cache = {"stages": stageids, "lieux": lieux, "tri": tri}
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cache.set(cache_key, to_cache, 600)
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logger.info(cache_key)
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else:
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# Lecture du cache
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stageids = cached["stages"]
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lieux = cached["lieux"]
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tri = cached["tri"]
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logger.info("recherche en cache")
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# Pagination
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paginator = Paginator(stageids, 25)
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try:
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stageids = paginator.page(page)
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except InvalidPage:
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stageids = []
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if cached is None:
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stages = stages[max(0, stageids.start_index()-1):
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stageids.end_index()]
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else:
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orderer = Case(*[When(pk=pk, then=pos)
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for pos, pk in enumerate(stageids)])
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stages = Stage.objects.filter(id__in=stageids).order_by(orderer)
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stages = stages.prefetch_related('lieux', 'auteur',
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'matieres', 'thematiques')
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else:
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form = SearchForm()
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if stages:
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vue = 'vue-hybride'
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# Version JSON pour recherche dynamique
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if request.GET.get("format") == "json":
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return JsonResponse({"stages": stages, "page": page,
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"num_pages": paginator.num_pages})
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template_name = 'avisstage/recherche/resultats.html'
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if request.GET.get("format") == "raw":
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template_name = 'avisstage/recherche/stage_items.html'
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return render(request, template_name,
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{"form": form, "stages": stages, "paginator": stageids,
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"tri": tri, "vue": vue, "lieux": lieux,
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"MAPBOX_API_KEY": settings.MAPBOX_API_KEY})
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@login_required
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@en_scolarite_required
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def stage_items(request):
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try:
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stageids = [int(a) for a in request.GET.get("ids", "").split(';')]
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except ValueError:
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return HttpResponseBadRequest("Paramètre incorrect")
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stages = Stage.objects.filter(id__in=stageids)\
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.prefetch_related('lieux', 'auteur',
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'matieres', 'thematiques')
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return render(request, 'avisstage/recherche/stage_items.html',
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{"stages": stages})
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