我试图使用通用的CreateVIew
模板在表单中显示OSMWidget
。在
# models.py
class Building(models.Model):
point = PointField('kort markør', null=True)
country = models.CharField('land', max_length=100, blank=True, null=True, default='Danmark')
city = models.CharField('by', max_length=100, blank=True, null=True)
# forms.py
from django.contrib.gis.forms import OSMWidget, PointField, ModelForm
from .models import Building
class BuildingForm(ModelForm):
point = PointField(
widget=OSMWidget(
attrs={'map_width': 600,
'map_height': 400,
'template_name': 'gis/openlayers-osm.html',
'default_lat': 57,
'default_lon': 12}))
class Meta:
model = Building
fields = ['city', 'country', 'point']
# buildings_form.html
{% block content %}
<form enctype="multipart/form-data" method="post" action="">
{% csrf_token %}
<ul>
{{ form.as_ul }}
</ul>
<input type="submit" value="Submit"/>
</form>
{% endblock %}
但是这个映射没有显示在模板中,但是它只是显示为一个空的div。在
# web inspector
<script type="text/javascript">
var map_options = {};
var base_layer = new ol.layer.Tile({source: new ol.source.OSM()});
var options = {
base_layer: base_layer,
geom_name: 'Point',
id: 'id_point',
map_id: 'id_point_map',
map_options: map_options,
map_srid: 3857,
name: 'point'
};
options['default_lon'] = 12;
options['default_lat'] = 57;
options['default_zoom'] = 12;
var geodjango_point = new MapWidget(options);
</script>
控制台输出这个错误:ReferenceError: ol is not defined
所以我认为它不会加载javascript。或者我需要指定js在widget属性中的位置。但我在文件里找不到任何东西。在
我也尝试了以下方法:
它从cloudflare加载资源,但是抛出ReferenceError: MapWidget is not defined
# building_form.html
{% block extra_css %}
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/ol3/3.20.1/ol.css">
{% endblock %}
{% block extra_js %}
<script src="https://cdnjs.cloudflare.com/ajax/libs/ol3/3.20.1/ol.js"></script>
{% endblock %}
并将其添加到forms media类中,但它不会在模板的head部分触发js和css,并抛出ReferenceError: ol is not defined
class BuildingForm(ModelForm):
point = PointField(
widget=OSMWidget(
attrs={'map_width': 600,
'map_height': 400,
'template_name': 'gis/openlayers-osm.html',
'default_lat': 57,
'default_lon': 12}))
class Meta:
model = Building
fields = ['project', 'description', 'point']
class Media:
css = {
'all': (
'https://cdnjs.cloudflare.com/ajax/libs/ol3/3.20.1/ol.css',
'gis/css/ol3.css',
)
}
js = (
'https://cdnjs.cloudflare.com/ajax/libs/ol3/3.20.1/ol.js',
'gis/js/OLMapWidget.js',
)
但如果我在控制台中测试媒体内容,一切正常:
w = BuildingForm()
>>> print(w.media)
<link href="https://cdnjs.cloudflare.com/ajax/libs/ol3/3.20.1/ol.css" type="text/css" media="all" rel="stylesheet" />
<link href="/static/gis/css/ol3.css" type="text/css" media="all" rel="stylesheet" />
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/ol3/3.20.1/ol.js"></script>
<script type="text/javascript" src="/static/gis/js/OLMapWidget.js"></script>
有人能帮忙吗?我太糊涂了。 谢谢。在
这里需要做一些修改:
在
buildings_form.html
中,在模板的head部分呈现媒体。在当像您一样对
^{pr2}$ModelForm
进行子类化时,还需要将其设置为自定义CreateView中的form类。在同样在自定义模型表单中,字段的小部件应该在widgets类属性中指定。在
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