fix: remove unnecessary db_index from content field in models

Author: liuruibin

apps/knowledge/migrations/0001_initial.py

@@ -116,7 +116,7 @@ class Migration(migrations.Migration):
                 ('create_time', models.DateTimeField(auto_now_add=True, db_index=True, verbose_name='创建时间')),
                 ('update_time', models.DateTimeField(auto_now=True, db_index=True, verbose_name='修改时间')),
                 ('id', models.UUIDField(default=uuid_utils.compat.uuid7, editable=False, primary_key=True, serialize=False, verbose_name='主键id')),
-                ('content', models.CharField(db_index=True, max_length=102400, verbose_name='段落内容')),
+                ('content', models.CharField(max_length=102400, verbose_name='段落内容')),
                 ('title', models.CharField(db_index=True, default='', max_length=256, verbose_name='标题')),
                 ('status', models.CharField(db_index=True, default=knowledge.models.knowledge.get_default_status, max_length=20, verbose_name='状态')),
                 ('status_meta', models.JSONField(default=knowledge.models.knowledge.default_status_meta, verbose_name='状态数据')),

apps/knowledge/models/knowledge.py

@@ -166,7 +166,7 @@ class Paragraph(AppModelMixin):
     id = models.UUIDField(primary_key=True, max_length=128, default=uuid.uuid7, editable=False, verbose_name="主键id")
     document = models.ForeignKey(Document, on_delete=models.DO_NOTHING, db_constraint=False)
     knowledge = models.ForeignKey(Knowledge, on_delete=models.DO_NOTHING)
-    content = models.CharField(max_length=102400, verbose_name="段落内容", db_index=True)
+    content = models.CharField(max_length=102400, verbose_name="段落内容")
     title = models.CharField(max_length=256, verbose_name="标题", default="", db_index=True)
     status = models.CharField(verbose_name='状态', max_length=20, default=get_default_status, db_index=True)
     status_meta = models.JSONField(verbose_name="状态数据", default=default_status_meta)