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README.md
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# Django: Map-Location
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Adds a fully-static location field (Leaflet) to manage location-based data without the need for a full-fledged GeoDjango installation. ... when all you need is a visual position chooser.
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## Install
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1. Add to your INSTALLED_APPS
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```py
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INSTALLED_APPS = [
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...,
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'map_location',
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]
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```
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2. Create Map-Location field
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```py
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from map_location.fields import LocationField
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class Place(models.Model):
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location = LocationField('Pos', blank=True, null=True, options={
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'map': {
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'center': [52.52, 13.40],
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'zoom': 12,
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},
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# 'markerZoom': 18
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# 'tileLayer': 'https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png',
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# 'tileOptions': {
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# attribution: '© <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a>',
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# },
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})
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```
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## Options Paramter
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| Key | Info
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|-------------|------------------
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| map | [Map Options](https://leafletjs.com/reference.html#map-option) (default: `{center: [20, -25], zoom: 2}`)
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| markerZoom | Initial zoom scale (on load) – if a marker is set. (default: `18`)
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| tileLayer | [TileLayer](https://leafletjs.com/reference.html#tilelayer) urlTemplate (default: `"https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png"`)
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| tileOptions | [TileLayer Options](https://leafletjs.com/reference.html#tilelayer-option) (default: `{}`)
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## Usage
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You can access the location by its parts (`place.location.lat` & `place.location.long`) or by its string value (`str(place.location)` or just `place.location`) which will return a comma-separated string (`lat,long`). This string format is also used for database storage (with a precision of 6 digits, or up to 11 cm).
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## Example
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If you export your location as json, you can use a fully static map:
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```py
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_JSON_ = {'loc': [place.location.lat, place.location.long]}
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```
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```html
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<script src="/static/leaflet/leaflet.js"></script>
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<script src="/static/leaflet/locate/L.Control.Locate.min.js"></script>
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<link rel="stylesheet" href="/static/leaflet/leaflet.css" />
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<link rel="stylesheet" href="/static/leaflet/locate/L.Control.Locate.css" />
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...
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<div id="map-id"></div>
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...
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<script>
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const osm = L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png');
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const map = L.map('map-id', {
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layers: [osm],
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center: [52.52, 13.40],
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zoom: 14,
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});
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L.control.locate({
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returnToPrevBounds: true,
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showPopup: false,
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}).addTo(map);
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L.marker(L.latLng(_JSON_.loc)).addTo(map);
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...
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</script>
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```
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See [Leaflet](https://leafletjs.com/) docs for configuration options.
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## License
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This project is licensed under MIT and includes:
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- v1.9.4 [Leaflet](https://github.com/Leaflet/Leaflet) (BSD 2-Clause License)
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- v0.81.1 [Leaflet.Locate](https://github.com/domoritz/leaflet-locatecontrol) (MIT)
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