helpers.py
author Tero Marttila <terom@fixme.fi>
Mon, 09 Feb 2009 23:49:57 +0200
changeset 73 5a7188bf2894
parent 72 5ade0288f2ec
child 79 43ac75054d5c
permissions -rw-r--r--
split defined configuration constants into config, and implement search result pagination
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"""
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    Some additional helpers
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"""
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import datetime, calendar
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import qmsk.web.helpers
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import preferences, urls, config
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class Helpers (qmsk.web.helpers.Helpers) :
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    """
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        Our set of helpers, inheriting from base helpers
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    """
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    def tz_name (self, tz) :
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        """
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            Returns a string describing the given timezone
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        """
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        return self.now().strftime(config.TIMEZONE_FMT)
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    def fmt_month (self, date) :
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        """
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            Formats a month
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        """
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        return date.strftime(config.MONTH_FMT)
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    def fmt_weekday (self, wday) :
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        """
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            Formats an abbreviated weekday name
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        """
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        return calendar.day_abbr[wday]
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    def build_date (self, month, mday) :
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        """
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            Returns a datetime.date for the given (month.year, month.month, mday)
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        """
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        return datetime.date(month.year, month.month, mday)
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    def now (self) :
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        """
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            Build current time
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        """
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        return self.ctx['prefs'][preferences.timezone].localize(datetime.datetime.now())
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    def today (self) :
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        """
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            Build today's date
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        """
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        return self.now().date()
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    def is_today (self, date) :
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        """
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            Checks if the given date is today
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        """
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        # construct current date
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        return date == self.today()
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    def is_this_month (self, month) :
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        """
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            Checks the given month is the current month
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        """
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        today = self.today()
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        return (month.year == today.year and month.month == today.month)
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    def prev_month_year (self, month) :
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        """
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            Returns the year of the month before the given one
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        """
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        if month.month == 1 :
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            return month.year - 1
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        else :
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            return month.year
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    def next_month_year (self, month) :
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        """
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            Returns the year of the month after the given one
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        """
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        if month.month == 12 :
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            return month.year + 1
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        else :
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            return month.year
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    def prev_month (self, month) :
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        """
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            Returns the month before the given one
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        """
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        if month.month == 1 :
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            return 12
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        else :
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            return month.month - 1
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    def next_month (self, month) :
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        """
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            Returns the month after the given one
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        """
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        if month.month == 12 :
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            return 1
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        else :
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            return month.month + 1
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    def fmt_time (self, time=None) :
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        """
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            Format given time, or current time
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        """
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        # defaults
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        if not time :
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            time = self.now()
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        return time.strftime(self.ctx['prefs'][preferences.time_format])
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    def fmt_date (self, date=None) :
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        """
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            Format given date, or current date
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        """
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        # defaults
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        if not date :
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            date = self.now()
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        return date.strftime(self.ctx['prefs'][preferences.date_format])
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    def build_url (self, url, **params) :
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        """
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            Build URL with our request object
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        """
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        return url.build(self.ctx['req'], **params)
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    def utc_timestamp (self, dtz) :
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        """
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            Build an UTC timestamp from the given datetime
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        """
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416560b82116 rudimentary search
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        return urls.types['ts'].build(dtz)
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    def skip_next (self, count, skip) :
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        """
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            Return skip offset for next page
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        """
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        return count + skip
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   161
    
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    def skip_page (self, count, page) :
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        """
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            Skip to page
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        """
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        if page :
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            return count * page
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        else :
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            return None
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    def skip_prev (self, count, skip) :
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        """
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            Return skip offset for previous page, None for first page
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        """
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        if skip > count :
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            return skip - count
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        else :
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            return None
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    def max (self, *values) :
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        """
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            Returns the largest of the given values
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        """
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        return max(values)
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