Fix data saving issues with SQLAlchemy models

Author: yujiyokoo

languages/python/jupyter_notebook/CipherStash-Getting-Started.ipynb

@@ -411,7 +411,7 @@
     "In order to encrypt and store plaintext values, CipherStash Proxy requires encrypted columns in its specific format.\n",
     "In Python, this conversion is done by creating an object of `CsText` as:\n",
     "```\n",
-    "txt = CsText(\"hell, world\", \"examples\", \"encrypted_utf8_str\")\n",
+    "txt = CsText(\"hello, world\", \"examples\", \"encrypted_utf8_str\")\n",
     "txt.to_db_format()\n",
     "```\n",
     "\n",
@@ -863,55 +863,38 @@
     "\n",
     "BaseModel.metadata.create_all(engine) # Create table for models if it's not created yetbelow and\n",
     "\n",
-    "session.query(Example).delete() # Clear data if there is any from previous runs\n",
-    "ex = Example(e_utf8_str = \"example record 1\", e_jsonb = json.dumps({'a': {'b': 1}}), e_int = 42, e_float = 3.14, e_date = date.today(), e_bool=False)\n",
+    "# Clear data if there is any from previous runs\n",
+    "session.query(Example).delete()\n",
     "\n",
+    "ex = Example(e_utf8_str = \"example record 1\", e_jsonb = json.dumps({'a': {'b': 1}}), e_int = 42, e_float = 3.14, e_date = date.today(), e_bool=False)\n",
     "session.add(ex)\n",
     "session.commit()\n",
     "\n",
     "ex = Example(e_utf8_str = \"example record 2\", e_jsonb = json.dumps({'a': {'c': 2}}), e_int = 43, e_float = 1.41, e_date = date.today(), e_bool=True)\n",
     "session.add(ex)\n",
     "session.commit()\n",
     "\n",
-    "ex3 = Example(e_utf8_str = \"example record 1\", e_jsonb = json.dumps({'a': {'b': 1}}), e_int = 44, e_float = 2.718, e_date = date.today(), e_bool=True)\n",
+    "ex = Example(e_utf8_str = \"example record 3\", e_jsonb = json.dumps({'a': {'b': 1}}), e_int = 44, e_float = 2.718, e_date = date.today(), e_bool=True)\n",
     "session.add(ex)\n",
     "session.commit()\n",
     "\n",
-    "'''\n",
-    "ex1 = Example(\n",
-    "    e_utf8_str = \"example record 1\",\n",
-    "    e_jsonb = json.dumps({'a': {'b': 1}}),\n",
-    "    e_int = 42,\n",
-    "    e_float = 3.14,\n",
-    "    e_date = date.today(),\n",
-    "    e_bool=False)\n",
-    "\n",
-    "ex2 = Example(\n",
-    "    e_utf8_str = \"example record 2\",\n",
-    "    e_jsonb = json.dumps({'a': {'c': 2}}),\n",
-    "    e_int = 44,\n",
-    "    e_float = 1.41,\n",
-    "    e_date = date.today(),\n",
-    "    e_bool=True)\n",
-    "\n",
-    "ex3 = Example(\n",
-    "    e_utf8_str = \"example record 1\",\n",
-    "    e_jsonb = json.dumps({'a': {'b': 1}}),\n",
-    "    e_int = 44,\n",
-    "    e_float = 2.718,\n",
-    "    e_date = date.today(),\n",
-    "    e_bool=True)\n",
-    "\n",
-    "session.add(ex1)\n",
-    "session.add(ex2)\n",
-    "session.add(ex3)\n",
-    "session.commit()\n",
-    "'''\n",
-    "# After the commit above, the records are visible outside of this session\n",
-    "\n",
     "print(\"Example data creation done\")"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "id": "a002b3d7-7889-4286-a80a-278a13196503",
+   "metadata": {},
+   "source": [
+    "With the above code, records are created as in the following table:\n",
+    "\n",
+    "| encrypted_utf8_str | encrypted_jsonb | encrypted_int | encrypted_float | encrypted_date | encrypted_boolean |\n",
+    "|--------------------|-----------------|---------------|-----------------|----------------|-------------------|\n",
+    "| example record 1   | {\"a\": {\"b\": 1}} | 42            | 3.14            | 2024-10-25     | False             |\n",
+    "| example record 2   | {\"a\": {\"c\": 2}} | 43            | 1.41            | 2024-10-26     | True              |\n",
+    "| example record 3   | {\"a\": {\"b\": 1}} | 44            | 2.718           | 2024-10-27     | True              |"
+   ]
+  },
   {
    "cell_type": "markdown",
    "id": "97e4fea0-74e5-4f16-9040-1eecbefe5c14",