'更新了Django示例代码'

Author: jackfrued

Day41-55/code/hellodjango/db.sqlite3

@@ -1,12 +1,19 @@
 from django.contrib import admin
 
-from demo.models import Teacher
+from demo.models import Teacher, Subject
+
+
+class SubjectAdmin(admin.ModelAdmin):
+    list_display = ('no', 'name', 'intro')
+    ordering = ('no', )
 
 
 class TeacherAdmin(admin.ModelAdmin):
-    list_display = ('no', 'name', 'job', 'intro', 'motto')
+    list_display = ('no', 'name', 'intro', 'motto', 'subject', 'manager')
     search_fields = ('name', 'intro')
     ordering = ('no', )
 
 
+admin.site.register(Subject, SubjectAdmin)
 admin.site.register(Teacher, TeacherAdmin)
+

Day41-55/code/hellodjango/demo/admin.py

@@ -1,6 +1,7 @@
-# Generated by Django 2.0.6 on 2018-07-03 02:20
+# Generated by Django 2.0.6 on 2018-07-04 02:30
 
 from django.db import migrations, models
+import django.db.models.deletion
 
 
 class Migration(migrations.Migration):
@@ -11,17 +12,31 @@ class Migration(migrations.Migration):
     ]
 
     operations = [
+        migrations.CreateModel(
+            name='Subject',
+            fields=[
+                ('no', models.AutoField(db_column='sno', primary_key=True, serialize=False, verbose_name='编号')),
+                ('name', models.CharField(db_column='sname', max_length=50, verbose_name='学科名称')),
+                ('intro', models.CharField(db_column='sintro', max_length=511, verbose_name='学科介绍')),
+            ],
+            options={
+                'db_table': 'tb_subject',
+            },
+        ),
         migrations.CreateModel(
             name='Teacher',
             fields=[
-                ('no', models.AutoField(db_column='tno', primary_key=True, serialize=False)),
-                ('name', models.CharField(db_column='tname', max_length=20)),
-                ('job', models.CharField(db_column='tjob', max_length=10)),
-                ('intro', models.CharField(db_column='tintro', max_length=1023)),
-                ('motto', models.CharField(db_column='tmotto', max_length=255)),
+                ('no', models.AutoField(db_column='tno', primary_key=True, serialize=False, verbose_name='编号')),
+                ('name', models.CharField(db_column='tname', max_length=20, verbose_name='姓名')),
+                ('intro', models.CharField(db_column='tintro', max_length=1023, verbose_name='简介')),
+                ('motto', models.CharField(db_column='tmotto', max_length=255, verbose_name='教学理念')),
+                ('photo', models.CharField(blank=True, db_column='tphoto', max_length=511, null=True)),
+                ('manager', models.BooleanField(db_column='tmanager', default=False, verbose_name='是否主管')),
+                ('subject', models.ForeignKey(db_column='sno', on_delete=django.db.models.deletion.PROTECT, to='demo.Subject', verbose_name='所属学科')),
             ],
             options={
                 'db_table': 'tb_teacher',
+                'ordering': ('name',),
             },
         ),
     ]

Day41-55/code/hellodjango/demo/migrations/0001_initial.py

@@ -0,0 +1,36 @@
+# Generated by Django 2.0.6 on 2018-07-04 03:17
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('demo', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='subject',
+            options={'verbose_name': '学科', 'verbose_name_plural': '学科'},
+        ),
+        migrations.AlterModelOptions(
+            name='teacher',
+            options={'ordering': ('name',), 'verbose_name': '讲师', 'verbose_name_plural': '讲师'},
+        ),
+        migrations.AddField(
+            model_name='teacher',
+            name='bad_count',
+            field=models.IntegerField(db_column='sbcount', default=0, verbose_name='差评数'),
+        ),
+        migrations.AddField(
+            model_name='teacher',
+            name='good_count',
+            field=models.IntegerField(db_column='sgcount', default=0, verbose_name='好评数'),
+        ),
+        migrations.AlterField(
+            model_name='teacher',
+            name='photo',
+            field=models.CharField(blank=True, db_column='tphoto', max_length=511, null=True, verbose_name='照片'),
+        ),
+    ]

Day41-55/code/hellodjango/demo/migrations/0002_auto_20180704_1117.py

@@ -0,0 +1,23 @@
+# Generated by Django 2.0.6 on 2018-07-04 03:18
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('demo', '0002_auto_20180704_1117'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='teacher',
+            name='bad_count',
+            field=models.IntegerField(db_column='tbcount', default=0, verbose_name='差评数'),
+        ),
+        migrations.AlterField(
+            model_name='teacher',
+            name='good_count',
+            field=models.IntegerField(db_column='tgcount', default=0, verbose_name='好评数'),
+        ),
+    ]

Day41-55/code/hellodjango/demo/migrations/0002_teacher_photo.py

@@ -1,17 +1,34 @@
 from django.db import models
+from django.db.models import PROTECT
 
-# Django框架中包含了ORM(对象关系映射)框架
-# ORM可以帮助我们完成对象模型到关系模型的双向转换
+
+class Subject(models.Model):
+    no = models.AutoField(primary_key=True, db_column='sno', verbose_name='编号')
+    name = models.CharField(max_length=50, db_column='sname', verbose_name='学科名称')
+    intro = models.CharField(max_length=511, db_column='sintro', verbose_name='学科介绍')
+
+    def __str__(self):
+        return self.name
+
+    class Meta(object):
+        db_table = 'tb_subject'
+        verbose_name = '学科'
+        verbose_name_plural = '学科'
 
 
 class Teacher(models.Model):
     no = models.AutoField(primary_key=True, db_column='tno', verbose_name='编号')
     name = models.CharField(max_length=20, db_column='tname', verbose_name='姓名')
-    job = models.CharField(max_length=10, db_column='tjob', verbose_name='职位')
     intro = models.CharField(max_length=1023, db_column='tintro', verbose_name='简介')
     motto = models.CharField(max_length=255, db_column='tmotto', verbose_name='教学理念')
-    photo = models.CharField(max_length=511, db_column='tphoto', null=True)
+    photo = models.CharField(max_length=511, db_column='tphoto', verbose_name='照片', null=True, blank=True)
+    subject = models.ForeignKey(Subject, db_column='sno', on_delete=PROTECT, related_name='+', verbose_name='所属学科')
+    manager = models.BooleanField(default=False, db_column='tmanager', verbose_name='是否主管')
+    good_count = models.IntegerField(default=0, db_column='tgcount', verbose_name='好评数')
+    bad_count = models.IntegerField(default=0, db_column='tbcount', verbose_name='差评数')
 
     class Meta(object):
         db_table = 'tb_teacher'
-        ordering = ('-no', )
+        verbose_name = '讲师'
+        verbose_name_plural = '讲师'
+        ordering = ('name', )

Day41-55/code/hellodjango/demo/migrations/0003_auto_20180703_1355.py

@@ -1,9 +1,35 @@
+import json
+
+from django.http import HttpResponse
 from django.shortcuts import render
 
-from demo.models import Teacher
+from demo.models import Subject, Teacher
+
+
+def index(request):
+    ctx = {'subjects_list': Subject.objects.all()}
+    return render(request, 'demo/index.html', ctx)
+
+
+def show_teachers(request, no):
+    teachers = Teacher.objects.filter(subject__no=no)
+    ctx = {'teachers_list': teachers}
+    return render(request, 'demo/teacher.html', ctx)
+
+
+def make_good_comment(request, no):
+    teacher = Teacher.objects.get(pk=no)
+    teacher.good_count += 1
+    teacher.save()
+    ctx = {'code': 200, 'result': f'好评({teacher.good_count})'}
+    return HttpResponse(json.dumps(ctx),
+                        content_type='application/json; charset=utf-8')
 
 
-def home(request):
-    # 通过ORM框架实现持久化操作CRUD
-    ctx = {'teachers_list': list(Teacher.objects.all())}
-    return render(request, 'demo/home.html', ctx)
+def make_bad_comment(request, no):
+    teacher = Teacher.objects.get(pk=no)
+    teacher.bad_count += 1
+    teacher.save()
+    ctx = {'code': 200, 'result': f'差评({teacher.bad_count})'}
+    return HttpResponse(json.dumps(ctx),
+                        content_type='application/json; charset=utf-8')