How to insert Sanic stream object to jinja asynchronous template












0















In Sanic (python async web framework) I can create stream object output to html with this:



from sanic.response import stream

@app.route("/")
async def test(request):
async def sample_streaming_fn(response):
await response.write('<b>foo</b>')
await response.write('<b>bar</b>')
return stream(sample_streaming_fn, content_type='text/html')


Result:



foo bar



And with Jinja2 I can render asynchronously like so after turn on the async feature:



from sanic.response import html

@app.route('/')
async def test(request):
rendered_template = await template.render_async(
key='value')
return html(rendered_template)


I tried with this to output stream object to Jinja2 template:



@app.route('/')
async def test(request):
async def stream_template(response):
rendered_template = await template.render_async(
key="<b>value</b>")
await response.write(rendered_template)
return stream(stream_template, content_type='text/html') # I need it to return stream


but all I got was the downloaded template (html file).



I there any way to rig Jinja2 template.render_async to accept Sanic's response.write and return it in stream?










share|improve this question



























    0















    In Sanic (python async web framework) I can create stream object output to html with this:



    from sanic.response import stream

    @app.route("/")
    async def test(request):
    async def sample_streaming_fn(response):
    await response.write('<b>foo</b>')
    await response.write('<b>bar</b>')
    return stream(sample_streaming_fn, content_type='text/html')


    Result:



    foo bar



    And with Jinja2 I can render asynchronously like so after turn on the async feature:



    from sanic.response import html

    @app.route('/')
    async def test(request):
    rendered_template = await template.render_async(
    key='value')
    return html(rendered_template)


    I tried with this to output stream object to Jinja2 template:



    @app.route('/')
    async def test(request):
    async def stream_template(response):
    rendered_template = await template.render_async(
    key="<b>value</b>")
    await response.write(rendered_template)
    return stream(stream_template, content_type='text/html') # I need it to return stream


    but all I got was the downloaded template (html file).



    I there any way to rig Jinja2 template.render_async to accept Sanic's response.write and return it in stream?










    share|improve this question

























      0












      0








      0








      In Sanic (python async web framework) I can create stream object output to html with this:



      from sanic.response import stream

      @app.route("/")
      async def test(request):
      async def sample_streaming_fn(response):
      await response.write('<b>foo</b>')
      await response.write('<b>bar</b>')
      return stream(sample_streaming_fn, content_type='text/html')


      Result:



      foo bar



      And with Jinja2 I can render asynchronously like so after turn on the async feature:



      from sanic.response import html

      @app.route('/')
      async def test(request):
      rendered_template = await template.render_async(
      key='value')
      return html(rendered_template)


      I tried with this to output stream object to Jinja2 template:



      @app.route('/')
      async def test(request):
      async def stream_template(response):
      rendered_template = await template.render_async(
      key="<b>value</b>")
      await response.write(rendered_template)
      return stream(stream_template, content_type='text/html') # I need it to return stream


      but all I got was the downloaded template (html file).



      I there any way to rig Jinja2 template.render_async to accept Sanic's response.write and return it in stream?










      share|improve this question














      In Sanic (python async web framework) I can create stream object output to html with this:



      from sanic.response import stream

      @app.route("/")
      async def test(request):
      async def sample_streaming_fn(response):
      await response.write('<b>foo</b>')
      await response.write('<b>bar</b>')
      return stream(sample_streaming_fn, content_type='text/html')


      Result:



      foo bar



      And with Jinja2 I can render asynchronously like so after turn on the async feature:



      from sanic.response import html

      @app.route('/')
      async def test(request):
      rendered_template = await template.render_async(
      key='value')
      return html(rendered_template)


      I tried with this to output stream object to Jinja2 template:



      @app.route('/')
      async def test(request):
      async def stream_template(response):
      rendered_template = await template.render_async(
      key="<b>value</b>")
      await response.write(rendered_template)
      return stream(stream_template, content_type='text/html') # I need it to return stream


      but all I got was the downloaded template (html file).



      I there any way to rig Jinja2 template.render_async to accept Sanic's response.write and return it in stream?







      python python-3.x asynchronous jinja2 sanic






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 25 '18 at 12:53









      ArdhiArdhi

      694713




      694713
























          1 Answer
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          0














          After tweaking, here's what I came up with:



          from sanic.response import stream

          @app.route("/")
          async def test(request):
          async def sample_streaming_fn(response):
          await response.write(await template.render_async(key='<b>foo</b>'))
          await asyncio.sleep(1) # just for checking if it's indeed streamed
          await response.write(await template.render_async(key='<b>bar</b>'))
          return stream(sample_streaming_fn, content_type='text/html')


          And here's the Jinja2 template:



          <p>{{ key|safe }}</p>





          share|improve this answer























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            1 Answer
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            active

            oldest

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            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            0














            After tweaking, here's what I came up with:



            from sanic.response import stream

            @app.route("/")
            async def test(request):
            async def sample_streaming_fn(response):
            await response.write(await template.render_async(key='<b>foo</b>'))
            await asyncio.sleep(1) # just for checking if it's indeed streamed
            await response.write(await template.render_async(key='<b>bar</b>'))
            return stream(sample_streaming_fn, content_type='text/html')


            And here's the Jinja2 template:



            <p>{{ key|safe }}</p>





            share|improve this answer




























              0














              After tweaking, here's what I came up with:



              from sanic.response import stream

              @app.route("/")
              async def test(request):
              async def sample_streaming_fn(response):
              await response.write(await template.render_async(key='<b>foo</b>'))
              await asyncio.sleep(1) # just for checking if it's indeed streamed
              await response.write(await template.render_async(key='<b>bar</b>'))
              return stream(sample_streaming_fn, content_type='text/html')


              And here's the Jinja2 template:



              <p>{{ key|safe }}</p>





              share|improve this answer


























                0












                0








                0







                After tweaking, here's what I came up with:



                from sanic.response import stream

                @app.route("/")
                async def test(request):
                async def sample_streaming_fn(response):
                await response.write(await template.render_async(key='<b>foo</b>'))
                await asyncio.sleep(1) # just for checking if it's indeed streamed
                await response.write(await template.render_async(key='<b>bar</b>'))
                return stream(sample_streaming_fn, content_type='text/html')


                And here's the Jinja2 template:



                <p>{{ key|safe }}</p>





                share|improve this answer













                After tweaking, here's what I came up with:



                from sanic.response import stream

                @app.route("/")
                async def test(request):
                async def sample_streaming_fn(response):
                await response.write(await template.render_async(key='<b>foo</b>'))
                await asyncio.sleep(1) # just for checking if it's indeed streamed
                await response.write(await template.render_async(key='<b>bar</b>'))
                return stream(sample_streaming_fn, content_type='text/html')


                And here's the Jinja2 template:



                <p>{{ key|safe }}</p>






                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 25 '18 at 13:50









                ArdhiArdhi

                694713




                694713
































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