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June 9, 2016 09:07
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A small class that accepts an object/data and creates a dynamic pagination.
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class Paginate(object): | |
result_size = 0 | |
current_page = 0 | |
def __init__(self, results, page, limit=5): | |
self.result_size = len(results) | |
self.current_page = page | |
self.results = results | |
self.limit = limit | |
def has_next(self): | |
return bool(((self.current_page + 1) * self.limit) < self.result_size) | |
def has_prev(self): | |
return self.current_page > 0 | |
@property | |
def pages(self): | |
return int(ceil(self.result_size / float(self.limit))) | |
@property | |
def last_index(self): | |
return (self.current_page + 1) * self.limit | |
@property | |
def first_index(self): | |
return self.last_index - self.limit | |
def get_current_page_results(self): | |
if self.first_index > self.result_size: | |
self.current_page = 0 | |
if self.last_index > self.result_size: | |
return self.results[self.first_index:] | |
else: | |
return self.results[self.first_index:self.last_index] | |
#sample usage | |
@app.route('/search') | |
def search(): | |
app.logger.debug('Search page called.') | |
# TODO: not sure about the below code :-) | |
page = int(request.args.get('page', 0)) | |
results = search_api.get_search_results() | |
pagination = Paginate(results, page) | |
return render_template(pagination=pagination) |
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