Context processor na obrázek v pozadí

data/fotka_header.json

@@ -0,0 +1,171 @@
+[
+{
+  "model": "mamweb.fotkaheader",
+  "pk": "baliky.jpg",
+  "fields": {
+    "cas": "2020-09-20T09:18:34.562Z",
+    "fotka": "header/baliky.jpg"
+  }
+},
+{
+  "model": "mamweb.fotkaheader",
+  "pk": "beh.jpg",
+  "fields": {
+    "cas": "2020-09-20T09:18:34.562Z",
+    "fotka": "header/beh.jpg"
+  }
+},
+{
+  "model": "mamweb.fotkaheader",
+  "pk": "kryptografie.jpg",
+  "fields": {
+    "cas": "2020-09-20T09:18:34.562Z",
+    "fotka": "header/kryptografie.jpg"
+  }
+},
+{
+  "model": "mamweb.fotkaheader",
+  "pk": "mam_cernobile.jpg",
+  "fields": {
+    "cas": "2020-09-20T09:18:34.562Z",
+    "fotka": "header/mam_cernobile.jpg"
+  }
+},
+{
+  "model": "mamweb.fotkaheader",
+  "pk": "noc.jpg",
+  "fields": {
+    "cas": "2020-09-20T09:18:34.562Z",
+    "fotka": "header/noc.jpg"
+  }
+},
+{
+  "model": "mamweb.fotkaheader",
+  "pk": "ohen.jpg",
+  "fields": {
+    "cas": "2020-09-20T09:18:34.562Z",
+    "fotka": "header/ohen.jpg"
+  }
+},
+{
+  "model": "mamweb.fotkaheader",
+  "pk": "snih.jpg",
+  "fields": {
+    "cas": "2020-09-20T09:18:34.562Z",
+    "fotka": "header/snih.jpg"
+  }
+},
+{
+  "model": "mamweb.fotkaheader",
+  "pk": "spolecna.jpg",
+  "fields": {
+    "cas": "2020-09-20T09:18:34.562Z",
+    "fotka": "header/spolecna.jpg"
+  }
+},
+{
+  "model": "mamweb.fotkaheader",
+  "pk": "stiny.jpg",
+  "fields": {
+    "cas": "2020-09-20T09:18:34.562Z",
+    "fotka": "header/stiny.jpg"
+  }
+},
+{
+  "model": "mamweb.fotkaheader",
+  "pk": "vikendovka.jpg",
+  "fields": {
+    "cas": "2020-09-20T09:18:34.562Z",
+    "fotka": "header/vikendovka.jpg"
+  }
+},
+{
+  "model": "mamweb.fotkaheader",
+  "pk": "vylet.jpg",
+  "fields": {
+    "cas": "2020-09-20T09:18:34.562Z",
+    "fotka": "header/vylet.jpg"
+  }
+},
+{
+  "model": "mamweb.fotkaurlvazba",
+  "pk": 1,
+  "fields": {
+    "url": "/archiv/",
+    "fotka": "stiny.jpg",
+    "denni_doba": "oboji"
+  }
+},
+{
+  "model": "mamweb.fotkaurlvazba",
+  "pk": 2,
+  "fields": {
+    "url": "/clanky/",
+    "fotka": "kryptografie.jpg",
+    "denni_doba": "den"
+  }
+},
+{
+  "model": "mamweb.fotkaurlvazba",
+  "pk": 3,
+  "fields": {
+    "url": "/clanky/",
+    "fotka": "ohen.jpg",
+    "denni_doba": "noc"
+  }
+},
+{
+  "model": "mamweb.fotkaurlvazba",
+  "pk": 4,
+  "fields": {
+    "url": "/zadani/",
+    "fotka": "baliky.jpg",
+    "denni_doba": "den"
+  }
+},
+{
+  "model": "mamweb.fotkaurlvazba",
+  "pk": 5,
+  "fields": {
+    "url": "/zadani/",
+    "fotka": "stiny.jpg",
+    "denni_doba": "noc"
+  }
+},
+{
+  "model": "mamweb.fotkaurlvazba",
+  "pk": 6,
+  "fields": {
+    "url": "/co-je-MaM/",
+    "fotka": "vikendovka.jpg",
+    "denni_doba": "den"
+  }
+},
+{
+  "model": "mamweb.fotkaurlvazba",
+  "pk": 7,
+  "fields": {
+    "url": "/co-je-MaM/",
+    "fotka": "noc.jpg",
+    "denni_doba": "noc"
+  }
+},
+{
+  "model": "mamweb.fotkaurlvazba",
+  "pk": 8,
+  "fields": {
+    "url": "/soustredeni/",
+    "fotka": "beh.jpg",
+    "denni_doba": "den"
+  }
+},
+{
+  "model": "mamweb.fotkaurlvazba",
+  "pk": 9,
+  "fields": {
+    "url": "/soustredeni/",
+    "fotka": "vylet.jpg",
+    "denni_doba": "noc"
+  }
+}
+]

mamweb/admin.py

@@ -1,4 +1,5 @@
 from django.contrib import admin
+from django.contrib.admin import ModelAdmin
 from django.contrib.flatpages.models import FlatPage
  
 # Note: we are renaming the original Admin and Form as we import them!
@@ -8,6 +9,8 @@ from django.contrib.flatpages.admin import FlatpageForm as FlatpageFormOld
 from django import forms
 from ckeditor_uploader.widgets import CKEditorUploadingWidget
 
+import mamweb.models as m
+
 class FlatpageForm(FlatpageFormOld):
     content = forms.CharField(widget=CKEditorUploadingWidget())
     class Meta:
@@ -22,3 +25,9 @@ class FlatPageAdmin(FlatPageAdminOld):
 # We have to unregister the normal admin, and then reregister ours
 admin.site.unregister(FlatPage)
 admin.site.register(FlatPage, FlatPageAdmin)
+
+class FotkaPozadiAdmin(ModelAdmin):
+    readonly_fields = ['cas']
+
+admin.site.register(m.FotkaHeader, FotkaPozadiAdmin)
+admin.site.register(m.FotkaUrlVazba)

mamweb/context_processors.py

@@ -1,12 +1,45 @@
 
 from datetime import datetime, date
+import random
+
+from django.conf import settings
+
+from mamweb.models import FotkaUrlVazba
+
 
 def vzhled(request):
     ''' Podle casu prida do templatu, zdali je nebo neni noc '''
     hodin = datetime.now().hour
     if (hodin <= 6) or (hodin >= 20):
         noc = True
+        nedoba = 'den'
+        doba = 'noc'
     else:
         noc = False
-    return {'noc' : noc}
+        nedoba = 'noc'
+        doba = 'den'
+    url = request.path
+
+    fotky = FotkaUrlVazba.objects.exclude(denni_doba=nedoba)
+    fotka = None
+
+    # TODO rychlejší patternmatch?
+    while (fotka is None) and (url != ''):
+        presne = fotky.filter(url__exact=url)
+        if presne.count() > 0:
+            presne_doba = presne.filter(denni_doba=doba)
+            if presne_doba.count() > 0:
+                fotka = random.choice(presne_doba).url_fotky()
+            else:
+                fotka = random.choice(presne).url_fotky()
+
+        url = url[:-1]
+        index = url.rfind('/')
+        if index != -1:
+            url = url[:index+1]
+
+    if fotka is None:
+        fotka = settings.STATIC_URL + "images/header/vikendovka.jpg"
+
+    return {'noc': noc, 'fotka': fotka}
 

mamweb/migrations/0001_initial.py

@@ -0,0 +1,60 @@
+# Generated by Django 2.2.15 on 2020-09-20 09:14
+
+from django.db import migrations, models
+import django.db.models.deletion
+import django.utils.timezone
+
+from shutil import copytree
+
+
+def zkopiruj_fotky(apps, schema_editor):
+    copytree("mamweb/static/images/header/", "media/header/", dirs_exist_ok=True)
+
+
+class Migration(migrations.Migration):
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='FotkaHeader',
+            fields=[
+                ('cas', models.DateTimeField(default=django.utils.timezone.now, help_text='Čas vložení fotky',
+                                             verbose_name='čas vložení fotky')),
+                ('nazev',
+                 models.CharField(help_text='Název např. archiv_noc', max_length=50, primary_key=True, serialize=False,
+                                  unique=True, verbose_name='název fotky')),
+                ('fotka', models.ImageField(upload_to='header')),
+            ],
+            options={
+                'verbose_name': 'fotka do pozadí menu',
+                'verbose_name_plural': 'fotky do pozadí menu',
+                'db_table': 'fotky_header',
+                'ordering': ['-cas'],
+            },
+        ),
+        migrations.CreateModel(
+            name='FotkaUrlVazba',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('url',
+                 models.CharField(blank=True, help_text='url prefix stránek např: /archiv/ nebo /', max_length=100,
+                                  verbose_name='URL')),
+                ('denni_doba', models.CharField(choices=[('den', 'Zobrazit jen ve dne'), ('noc', 'Zobrazit jen v noci'),
+                                                         ('oboji', 'Zobrazovat pořád')], default='oboji', max_length=16,
+                                                verbose_name='denní doba')),
+                ('fotka', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='mamweb.FotkaHeader',
+                                            verbose_name='fotka')),
+            ],
+            options={
+                'verbose_name': 'vazba url a fotky do pozadí menu',
+                'verbose_name_plural': 'vazby url a fotek do pozadí menu',
+                'db_table': 'fotky_url_vazby',
+                'ordering': ['url'],
+            },
+
+        ),
+        migrations.RunPython(zkopiruj_fotky, migrations.RunPython.noop),
+    ]

mamweb/models.py

@@ -0,0 +1,65 @@
+from django.core.exceptions import ValidationError
+from django.db import models
+from django.utils import timezone
+
+
+class FotkaHeader(models.Model):
+	class Meta:
+		ordering = ['-cas']
+		db_table = 'fotky_header'
+		verbose_name = u'fotka do pozadí menu'
+		verbose_name_plural = u'fotky do pozadí menu'
+
+	cas = models.DateTimeField(u'čas vložení fotky', default=timezone.now, help_text='Čas vložení fotky')
+
+	nazev = models.CharField(
+		u'název fotky', null=False, blank=False, unique=True, primary_key=True,
+		max_length=50, help_text='Název např. archiv_noc'
+	)
+
+	fotka = models.ImageField(upload_to='header', null=False, blank=False)
+
+	def __str__(self):
+		return self.nazev
+
+	def clean(self):
+		if not self.fotka:
+			raise ValidationError("Chybí obrázek")
+		""" Kontroluje, zda sedí poměr stran """
+		if abs(self.fotka.width - (self.fotka.height * 970 / 350)) > 2:
+			raise ValidationError("Obrázek by měl mít rozměry 970w na 350h, nebo alespoň podobný poměr stran.")
+		super().clean()
+
+
+class FotkaUrlVazba(models.Model):
+	class Meta:
+		ordering = ['url']
+		db_table = 'fotky_url_vazby'
+		verbose_name = u'vazba url a fotky do pozadí menu'
+		verbose_name_plural = u'vazby url a fotek do pozadí menu'
+
+	url = models.CharField(
+		u'URL', blank=True, null=False, max_length=100,
+		help_text='url prefix stránek např: /archiv/ nebo /'
+	)
+
+	fotka = models.ForeignKey(
+		FotkaHeader, blank=False, null=False, verbose_name='fotka',
+		on_delete=models.CASCADE
+	)
+
+	DOBA_DEN = 'den'
+	DOBA_NOC = 'noc'
+	DOBA_OBOJI = 'oboji'
+	DOBA_CHOICES = [
+		(DOBA_DEN, 'Zobrazit jen ve dne'),
+		(DOBA_NOC, 'Zobrazit jen v noci'),
+		(DOBA_OBOJI, 'Zobrazovat pořád')]
+
+	denni_doba = models.CharField('denní doba', max_length=16, choices=DOBA_CHOICES, blank=False, default=DOBA_OBOJI)
+
+	def __str__(self):
+		return self.url
+
+	def url_fotky(self):
+		return self.fotka.fotka.url

mamweb/static/css/mamweb.css

@@ -193,38 +193,6 @@ h1 {
 	top: 58px;
 }
 
-/*
-fotky:
-
-todo url
-
-kryptografie
-baliky
-beh
-mam_cernobile -pro archiv? asi ne
-vylet
-spolecna -spíš ne, moc lidí
-snih
-ohen
-noc
-stiny
-vikendovka
-*/
-
-#header.cojemam { background-image: url("../images/header/vikendovka.jpg");}
-#header.soustredeni { background-image: url("../images/header/beh.jpg");}
-#header.zadani { background-image: url("../images/header/baliky.jpg");}
-#header.clanky { background-image: url("../images/header/kryptografie.jpg");}
-#header.archiv { background-image: url("../images/header/stiny.jpg");}
-
-#header.NOC {background-image: url("../images/header/noc.jpg");}
-#header.NOCcojemam { background-image: url("../images/header/noc.jpg");}
-#header.NOCsoustredeni { background-image: url("../images/header/vylet.jpg");}
-#header.NOCzadani { background-image: url("../images/header/stiny.jpg");}
-#header.NOCclanky { background-image: url("../images/header/ohen.jpg");}
-#header.NOCarchiv { background-image: url("../images/header/stiny.jpg");}
-
-
 #header img.logo {
 	position: absolute center;
 	width: 100%;

mamweb/templates/base.html

@@ -56,7 +56,8 @@
 		<div class='col-md-12'>
           <a href='/'>
 	    <div id="title" >M&M - korespondenční seminář a časopis MFF&nbspUK</div>
-            <div id="header" class="{% if noc %}NOC{% endif %}{% block header %}{% endblock %}">
+            <div id="header" style="background-image: url('{{ fotka }}')">
+                {# TODO style=… není fancy řešení, ale u <img> se bojím, že mi to rozbije vzhled #}
 		{% sitetree_menu from "main_menu" include "trunk" template "logo.html" %}
 		<img class="logo-mobile" src="{% static 'images/logo-mobile.svg' %}" />
             </div>