Gramex 1.39 Release Notes

PyNode

Gramex can allows you to run JavaScript code via node.js using gramex.pynode.node. Using Gramex FunctionHandlers you can run JavaScript code in node.js. Here is a simple example:

from gramex.pynode import node
from tornado.gen import coroutine, Return

@coroutine
def total(handler):
    result = yield node.js('return Math.abs(x + y)', x=5, y=-10)    # Run code in JS
    raise Return(result)

This returns the result:

{ "error": null, "result": 5 }

See the documentation.

UI Components

• opacity-** {10, 20 .., 80, 90} classes have been added for defining opacity. .opacity-10 sets opacity to 10%. Other classes have similar behavior.
• Accordion examples with +, - as expand and collapse symbols is added

MapViewer

Mapviewer tutorial covers g1.mapviewer usage with examples. g1.mapviewer is an abstraction over Leaflet that can create common GIS applications using configurations.

FormHandler

• FormHandler Table now supports multiple sorts from the interface.
• FormHandler Table now works with numeric greater than >, less than < opertions.
• FormHandler: earlier didn’t support _sort on col|agg columns when using _by with SQL engines. This is now fixed. #452

Logviewer

Logviewer documentation now has a section describing how logviewer.db is created. And, covers in detail how metrics are calculated, in particular session relation calculations and scenarios.

Developer Updates

• uicomponents now ships d3-scale-chromatic.js – provides sequential, diverging and categorical color schemes designed to work with d3-scale’s d3.scaleOrdinal and d3.scaleSequential.

Bug fixes

• Earlier gramex.cache size was using sys.getsizeof, we now use gramex.cache.sizeof. This fixes #444

Stats

• Code base: 27,007 lines (python: 16,394, javascript: 1,654, tests: 8,959)
• Test coverage: 79%

Upgrade

To upgrade Gramex, run:

pip install --verbose gramex==1.39

To upgrade apps dependencies, run:

gramex setup --all

This downloads Chromium and other front-end dependencies. That may take time.