data types architecture (sponsored: due feb 1)

[chriddyp]

placeholder issue for 1st class data type support in dash-table

Phase I - Type support

• Refactor cell content in preparation for data types #280 (prep work)
• Deeper support for 'number' and 'text' types #297 (first pass at data type support -- for existing types)
• Datetime type
• Allow filter conditions to use column type #342 (support conditionals based on column type)
• type inference with filtering
• type inference / precedence with sorting
• Make numeric columns return a number instead of a string when possible #332 (make numeric columns return number when possible instead of string)
• update dash docs
• clearly document the upgrade path (3.1 --> 3.2)

Phase II+
Related issues:

• data types - decimal formatting options for numerical columns #189 type=number formatting
• Feature request: Adding currency symbols and percent sign to numeric columns #232
• allow html rendering in cells #248
• How do I style my numbers to commas style, or 3 significant figures in a plotly table (without converting them to string) #305 (number styling)
• Feature Request: SingleDatePicker as 'dropdown' in Interactive Table #331 (date picker)

[chriddyp]

There is a lot to consider here. I've started considering 'what data types means in the table' in this gist, https://gist.github.com/chriddyp/afcaf01d124b610e69de066753d36fc5, and I'll update this thread as I make more progress spec'ing this out.

[chriddyp]

Great first pass on data types 🚀 . We can create separate issues for more features as they come up.