django-edumetadata v0.1 documentation
Time Periods
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Getting Started
Installation
Grades Metadata
Subjects and Disciplines
Time Periods
Goals
Historical Model Fields
Geologic Eras
Registering Models
Reference
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Time Periods
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Goals
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Add date or range fields on model
Link to one or more pre-defined periods
Historical Model Fields
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Single date or date range
Different granularities: year, month or date.
2 date fields: (start and end)
Internally store as integers since datetime only can handle back to 4713 BC
BC: -YYYYMMDD
AD: YYYYMMDD
Granularity is defined by 00 for month and/or day fields. Examples:
Birth of Jesus: 00000000 (Unusual case but since year is required, its value is defined as 0)
Stonehenge built: -31000000 (3100 BC)
JFK shot: 19631122 (Nov 22, 1963)
One-time events have a end date equal to start date
An unbound end date (to present) is 99999999 (must be ready for they Y10K issue)
compound date widgets:
Event date: [__] [__] [____]
Event Period: [__] [__] [____] to [__] [__] [____] or [x] Present
Help text: Enter in at least a year; month and date are optional.
Have a method to convert to “years ago”.
Have a method to convert to datetime (if possible)
Geologic Eras
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Time Periods