django 파일 다운로드

이미지 파일을 다운로드 하여 보여주는 코드 예

views.py

from django.http import HttpResponse
from django.http import FileResponse
import os
import pandas
import matplotlib.pyplot as plt
import numpy as np
from pandas import DataFrame, Series
import StringIO

def index(request):
    return HttpResponse("dir : %s <br><img src='image1'>" % (os.getcwd()))
def image1(request):
    response = FileResponse(open('image.png', 'rb'), content_type='image/png')
    return response

참고링크
https://docs.djangoproject.com/en/1.9/ref/request-response/#django.http.HttpResponse

HttpResponse 를 이용한 구현 예

def image2(request):
    response = HttpResponse(open('image.png', 'rb'), content_type='image/png')
    response['Content-Disposition'] = 'attachment; filename="image2.png"'
    return response

Pandas Series 차트 이미지를 다운로드 하는 예

import pandas
import matplotlib.pyplot as plt
import numpy as np
from pandas import DataFrame, Series
import StringIO

def chart1(request):
    s1 = Series([1,3,2,4,5])
    s1.plot(title="g")
    bufferIO = StringIO.StringIO()
    plt.savefig(bufferIO)
    bufferIO.seek(0)
    response = HttpResponse(bufferIO, content_type='image/png')
    response['Content-Disposition'] = 'attachment; filename="chart.png"'
    return response