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from flask import jsonify
from flask import make_response
import json
def make_response__json(status=200, data={}):
"""
Construct a json response with proper content-type header
@param data: must be serializable via json.dumps
"""
data_str = json.dumps(data)
resp = make_response(data_str)
resp.headers['Content-Type'] = "application/json"
resp.status = str(status)
return resp
def make_response__http__empty(status=200):
"""
Construct an empty HTTP response
"""
resp = make_response()
resp.status = str(status)
return resp
def make_response__http__pre_tag_wrapped(html_str, status=200):
"""
Construct a '<pre>' tag wrapped HTTP response
"""
resp_arr = ['<!DOCTYPE html>',
'<html><body><pre>',
html_str,
'</pre></body></html>'
]
return (''.join(resp_arr), 200)
def make_response__json__html(status=200, html_str=''):
"""
Construct a json response with HTML payload
"""
return make_response__json(data={'response__html': html_str })
def make_response__json__redirect(redirect_url, status=303, html_str=''):
"""
Construct a json response with redirect payload
"""
return make_response__json(data={'response__html': html_str,
'redirect_url': redirect_url })
def common_resp_handle(data=None, error=None):
"""
common response handling:
- add common response headers
- serialize response
@data must be json serializable
@error will be serialized with str()
"""
def __response_wrap(data=None, error=None):
"""
wrap response data/errors as dict - this should always be used when returning
data to allow easy return of list objects, assist in error case distinction, etc.
"""
return dict(data=data, error=error)
if error is None:
error_str = ""
else:
error_str = str(error) # convert any Exception objects to serializable form
ret_data = __response_wrap(data, error_str)
resp = jsonify(ret_data) # this will create a Flask Response object
resp.headers['Access-Control-Allow-Origin'] = '*'
# more response processing
return resp
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