Download

Download.ipynb

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   "cell_type": "code",
   "execution_count": null,
   "id": "surprised-intranet",
   "metadata": {},
   "outputs": [],
   "source": [
    "import ipyvuetify as vy\n",
    "import traitlets\n",
    "\n",
    "\n",
    "class MyDownloader(vy.VuetifyTemplate):\n",
    "    file_data = traitlets.Dict().tag(sync=True)\n",
    "    \n",
    "    template = traitlets.Unicode('''\n",
    "    <template>\n",
    "        <a ref=\"dataAnchor\" :href=\"file_data.data_url\" :download=\"file_data.name\" style=\"display: none\"></a>\n",
    "    </template>\n",
    "    <script>\n",
    "        modules.export = {\n",
    "            watch: {\n",
    "                file_data() {    \n",
    "                    this.$nextTick(() => {\n",
    "                        this.$refs.dataAnchor.click()\n",
    "                    })\n",
    "                }\n",
    "            }\n",
    "        }\n",
    "    </script>\n",
    "    ''').tag(sync=True)\n",
    "\n",
    "dl = MyDownloader()\n",
    "dl"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "authentic-denver",
   "metadata": {},
   "outputs": [],
   "source": [
    "from base64 import b64encode\n",
    "from random import random\n",
    "\n",
    "btn = vy.Btn(children=[\"download\"])\n",
    "\n",
    "def on_click(*ignore):\n",
    "    kind = 'text'\n",
    "    content_b64 = b64encode('some text'.encode()).decode()\n",
    "    dl.file_data = {\n",
    "        'name': 'someFile5.txt',\n",
    "        'data_url': f'data:{kind};charset=utf-8;base64,{content_b64}',\n",
    "        'some_random_data_so_vue_detects_a_change': random()\n",
    "    }\n",
    "btn.on_event('click', on_click)\n",
    "\n",
    "btn"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "negative-bloom",
   "metadata": {},
   "outputs": [],
   "source": []
  }
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