create a named map for every single visualization

[javisantana]

Details by @Kartones:

Tasks

• Store named maps for all types of vis, public or private #3918
• Migrate existing vis so all have named maps #3918 #3954 (needs release of branch 3879-improved-script and run cartodb:vizs:create_named_maps rake). <- Last 11k failed (out of 374k)
• Remove checks of "has named map" etc. and simplify code
• Add new fields required for static maps:
• Add to named map basemap layer ('http') (doc)
• Add bounding box to named map ("view" layer, doc).
• Tests for newly added fields
• Migrate to add values for existing named maps (no need for new script, just re-running existing one)
• Relax naming restraints of templates (see Windshaft part)
• Migrate existing template names? duplicate them? (needs planning after previous point is done)

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Branches

• 3879-named-maps-everywhere
• 3879-improved-script
• 3879-clean-named-maps-checks
• 3879-new-named-maps-fields (PR, needs reverting)

Description (original by @javisantana )

so we can generate previews for all the visualizations:

http://...../named/e1986900-cd40-11e4-b81f-0e43f3deba5a/width/height.png

this also needs a task to update all the current maps so:

• include the basemap
• include the map view bounds information

@rochoa will point here to the documentation

[rochoa]

Some examples about what we need/want can be found in the official documentation: http://docs.cartodb.com/cartodb-platform/maps-api.html#examples

Names for the named maps / templates right now are limited to: Valid names start with a letter, and only contain letters, numbers, or underscores (_). http://docs.cartodb.com/cartodb-platform/maps-api.html#arguments
Probably we want to change that so we don't have to do any workaround like name = 'tpl_' viz.id.replace('-', '_') as we do now., don't we?

[javisantana]

\o/

[rochoa]

❤️