8000 Implement view filters on the populate* request options by graysonarts · Pull Request #260 · tableau/server-client-python · GitHub
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Implement view filters on the populate* request options #260

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merged 6 commits into from
Jan 31, 2018
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2 changes: 1 addition & 1 deletion tableauserverclient/__init__.py
Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@
SiteItem, TableauAuth, UserItem, ViewItem, WorkbookItem, UnpopulatedPropertyError, \
HourlyInterval, DailyInterval, WeeklyInterval, MonthlyInterval, IntervalItem, TaskItem, \
SubscriptionItem
from .server import RequestOptions, ImageRequestOptions, PDFRequestOptions, Filter, Sort, \
from .server import RequestOptions, CSVRequestOptions, ImageRequestOptions, PDFRequestOptions, Filter, Sort, \
Server, ServerResponseError, MissingRequiredFieldError, NotSignedInError, Pager
from ._version import get_versions
__version__ = get_versions()['version']
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2 changes: 1 addition & 1 deletion tableauserverclient/server/__init__.py
Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
from .request_factory import RequestFactory
from .request_options import ImageRequestOptions, PDFRequestOptions, RequestOptions
from .request_options import CSVRequestOptions, ImageRequestOptions, PDFRequestOptions, RequestOptions
from .filter import Filter
from .sort import Sort
from .. import ConnectionItem, DatasourceItem, JobItem, \
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2 changes: 1 addition & 1 deletion tableauserverclient/server/endpoint/views_endpoint.py
Original file line number Diff line number Diff line change
Expand Up @@ -105,7 +105,7 @@ def csv_fetcher():
def _get_view_csv(self, view_item, req_options):
url = "{0}/{1}/data".format(self.baseurl, view_item.id)

with closing(self.get_request(url, parameters={"stream": True})) as server_response:
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I don't think this is right, the 'stream=true' is an option for the requests library, not something that gets included in the url string, which is what apply_query_parameters does.

with closing(self.get_request(url, request_object=req_options, parameters={"stream": True})) as server_response:
csv = server_response.iter_content(1024)
return csv

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35 changes: 32 additions & 3 deletions tableauserverclient/server/request_options.py
Original file line number Diff line number Diff line change
Expand Up @@ -62,24 +62,50 @@ def apply_query_params(self, url):
return "{0}?{1}".format(url, '&'.join(params))


class ImageRequestOptions(RequestOptionsBase):
class _FilterOptionsBase(RequestOptionsBase):
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Seems like a reasonable refactor.

Can you give this class a docstring just so at a glance we can tell what it's used for vs other optionsbases?

""" Provide a basic implementation of adding view filters to the url """
def __init__(self):
self.view_filters = []

def apply_query_params(self, url):
raise NotImplementedError()

def vf(self, name, value):
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There's no code testing this or sampling this yet, but I'm guessing this makes it:

opts = ImageRequestOptions()
opts.vf('a', 1).vf('b', 2) etc?

Baby-builder pattern!
Did you still want to refactor this all to eventually just be builder-y and call str on those? (referenced in #212)

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Yes, eventually, we will refactor to a builder pattern!

self.view_filters.append((name, value))
return self

def _append_view_filters(self, params):
for name, value in self.view_filters:
params.append('vf_{}={}'.format(name, value))


class CSVRequestOptions(_FilterOptionsBase):
def apply_query_params(self, url):
params = []
self._append_view_filters(params)
return "{0}?{1}".format(url, '&'.join(params))


class ImageRequestOptions(_FilterOptionsBase):
# if 'high' isn't specified, the REST API endpoint returns an image with standard resolution
class Resolution:
High = 'high'

def __init__(self, imageresolution=None):
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Side note: I thought I made this so it was image_resolution... maybe I never checked that fix in?

I might make a PR after this merges

super(ImageRequestOptions, self).__init__()
self.image_resolution = imageresolution

def apply_query_params(self, url):
params = []
if self.image_resolution:
params.append('resolution={0}'.format(self.image_resolution))

self._append_view_filters(params)

return "{0}?{1}".format(url, '&'.join(params))


class PDFRequestOptions(RequestOptionsBase):
# if 'high' isn't specified, the REST API endpoint returns an image with standard resolution
class PDFRequestOptions(_FilterOptionsBase):
class PageType:
A3 = "a3"
A4 = "a4"
Expand All @@ -100,6 +126,7 @@ class Orientation:
Landscape = "landscape"

def __init__(self, page_type=None, orientation=None):
super(PDFRequestOptions, self).__init__()
self.page_type = page_type
self.orientation = orientation

Expand All @@ -111,4 +138,6 @@ def apply_query_params(self, url):
if self.orientation:
params.append('orientation={0}'.format(self.orientation))

self._append_view_filters(params)

return "{0}?{1}".format(url, '&'.join(params))
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