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Small extension for Flask to make using Google Maps easy

Project description

# Flask Google Maps

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Easy to use Google Maps in your Flask application

Look the Live DEMO: http://flaskgooglemaps.pythonanywhere.com

### requires
- Jinja
- Flask
- A google api key [get here](https://developers.google.com/maps/documentation/javascript/get-api-key)


### Installation

```pip install flask-googlemaps```

or

```bash
git clone https://github.com/rochacbruno/Flask-GoogleMaps
cd Flask-GoogleMaps
python setup.py install
```


### How it works

Flask-GoogleMaps includes some global functions and template filters in your Jinja environment, also it allows you to use the Map in views if needed.


#### registering

in your app

```python
from flask import Flask
from flask_googlemaps import GoogleMaps

app = Flask(__name__)

# you can set key as config
app.config['GOOGLEMAPS_KEY'] = "8JZ7i18MjFuM35dJHq70n3Hx4"

# Initialize the extension
GoogleMaps(app)

# you can also pass the key here if you prefer
GoogleMaps(app, key="8JZ7i18MjFuM35dJHq70n3Hx4")

```

In template

```html
{{googlemap("my_awesome_map", lat=0.23234234, lng=-0.234234234, markers=[(0.12, -0.45345), ...])}}
```

That's it! now you have some template filters and functions to use, more details in examples and screenshot below.



### Usage

- You can create the map in the view and then send to the template context
- you can use the template functions and filters directly


#### 1. View

```python
from flask import Flask, render_template
from flask_googlemaps import GoogleMaps
from flask_googlemaps import Map

app = Flask(__name__, template_folder=".")
GoogleMaps(app)

@app.route("/")
def mapview():
# creating a map in the view
mymap = Map(
identifier="view-side",
lat=37.4419,
lng=-122.1419,
markers=[(37.4419, -122.1419)]
)
sndmap = Map(
identifier="sndmap",
lat=37.4419,
lng=-122.1419,
markers=[
{
'icon': 'http://maps.google.com/mapfiles/ms/icons/green-dot.png',
'lat': 37.4419,
'lng': -122.1419,
'infobox': "<b>Hello World</b>"
},
{
'icon': 'http://maps.google.com/mapfiles/ms/icons/blue-dot.png',
'lat': 37.4300,
'lng': -122.1400,
'infobox': "<b>Hello World from other place</b>"
}
]
)
return render_template('example.html', mymap=mymap, sndmap=sndmap)

if __name__ == "__main__":
app.run(debug=True)
```

##### `Map()` Parameters:

- **lat**: The latitude coordinate for centering the map.
- **lng**: The longitutde coordinate for centering the map.
- **zoom**: The zoom level. Defaults to `13`.
- **maptype**: The map type - `ROADMAP`, `SATELLITE`, `HYBRID`, `TERRAIN`. Defaults to `ROADMAP`.
- **markers**: Markers array of tuples having (**lat**, **lng**, infobox, icon). Defaults to `None`.
- or **markers**: a list of dicts containing **icon, lat, lng, infobox**.
- or **markers**: Markers dictionary with icon urls as keys and markers array as values.
- **varname**: The instance variable name.
- **style**: A string containing CSS styles. Defaults to `"height:300px;width:300px;margin:0;"`.
- **identifier**: The CSS ID selector name.
- **cls**: The CSS Class selector name. Defaults to `"map"`.

Also controls True or False:

- zoom_control
- maptype_control
- scale_control
- scale_control
- streetview_control
- rorate_control
- fullscreen_control
- scroll_wheel
- collapsible (map collapses by click on **varname**_collapse button)

#### 2. Template

```html
<!DOCTYPE html>
<html>
<head>
{{"decoupled-map"|googlemap_js(37.4419, -122.1419, markers=[(37.4419, -122.1419)])}}
{{mymap.js}}
{{sndmap.js}}
</head>
<body>
<h1>Flask Google Maps Example</h1>

<h2> Template function centered, no marker </h2>
{{googlemap("simple-map", 37.4419, -122.1419)}}

<h2> Template filter decoupled with single marker </h2>
{{"decoupled-map"|googlemap_html(37.4419, -122.1419)}}


<h2> Template function with multiple markers </h2>
{% with map=googlemap_obj("another-map", 37.4419, -122.1419, markers=[(37.4419, -122.1419), (37.4300, -122.1400)]) %}
{{map.html}}
{{map.js}}
{% endwith %}

<h2> First map generated in view</h2>
{{mymap.html}}

<h2> Second map generated in view</h2>
<h3> Example for different icons in multiple markers with infoboxes</h3>
{{sndmap.html}}

</body>
</html>

```

### Infobox

Here's an example snippet of code:
```python
Map(
identifier="catsmap",
lat=37.4419,
lng=-122.1419,
markers=[
{
'icon': 'http://maps.google.com/mapfiles/ms/icons/green-dot.png',
'lat': 37.4419,
'lng': -122.1419,
'infobox': "<img src='cat1.jpg' />"
},
{
'icon': 'http://maps.google.com/mapfiles/ms/icons/blue-dot.png',
'lat': 37.4300,
'lng': -122.1400,
'infobox': "<img src='cat2.jpg' />"
},
{
'icon': 'http://maps.google.com/mapfiles/ms/icons/yellow-dot.png',
'lat': 37.4500,
'lng': -122.1350,
'infobox': "<img src='cat3.jpg' />"
}
]
)

```

Which results in something like the following map:
<img width="1439" alt="screen shot 2015-07-29 at 2 41 52 pm" src="https://cloud.githubusercontent.com/assets/8108300/8969650/13b0de7a-3602-11e5-9ed0-9f328ac9253f.png">


### Run the example app

```bash
$ git clone https://github.com/rochacbruno/Flask-GoogleMaps
$ cd Flask-GoogleMaps/examples
$ python setup.py develop
$ python example.py

```

Access: http://localhost:5000/ and http://localhost:5000/fullmap

### TODO (open a Pull Request):

Implement other methods from the api, add layers etc...

Please see this page [developers.google.com/maps/documentation/javascript/tutorial](https://developers.google.com/maps/documentation/javascript/tutorial) and contribute!

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