Re: Custom layers in PgAdmin IV Mapview

Hi list!

The new Mapview is great, but when you give people something they always want more, and so do I.

I want to be able to add custom background layers to the existing list of layers.

I'm thinking that the list of layers should be configurable from the Preferences -> Sql editor menu (or somewhere in the Preferences)

Then again, given that I know both Js, Leaflet, Backbone, and Python/Flask I guess I should contribute the changes myself rather then waiting for someone else to do this.

However, I have some questions before I jump right on this task:

First some organizational:
1. If I add this, is this something that is welcomed by the project?

2. How do I register a task on https://redmine.postgresql.org/projects/pgadmin4/issues

3. Is it ok to clone the GitHub mirror and submit a PR there?

Then some tech-related questions:

1. It seems like window.top.pgAdmin.Browser.get_preferences_for_module is used for getting preferences from js, and that the PreferencesModule python class is responsible for managing preferences. But where are the default preferences listed?

self.session_stats_refresh = self.dashboard_preference.register(
    'dashboards', 'session_stats_refresh',
    gettext("Session statistics refresh rate"), 'integer',
    1, min_val=1, max_val=999999,
    category_label=gettext('Graphs'),
    help_str=gettext('The number of seconds between graph samples.')
)

2. Does the preferences code currently handle editing a list of elements? I'm thinking that the preferences pane for map layers should be something like this.


name    | url                                                                                             |
----------|-----------------------------------------------------------------| ------
streets | https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png | [remove]
[]            | []                                                                                                  | [add]

2.1 If it does, where in the code can I find it?
2.2 It it doesn't, where in the code can I add it and
3. In either case of 2: how do I specify how a preference object for a module look like?