python - GeoDjango--Python :Can't Display Map

Question

我在 Geodjango 环境下显示我的 map (来自 postgresql 数据库)时遇到了麻烦(我想更麻烦)。 .我已经成功地将我的 shapefile 导入到 Posgresql 数据库中。然而，无论何时我都无法查看我的 map 。 .我还按照步骤安装了所有需要的库，django、python 和 postgresql。 .

我是 Geodjango 的新手，这就是我无法追踪错误的原因。 .实际上我不知道怎么做。 .也许我可以得到你们的帮助。 .

我总是遇到这些错误。 . 它谈论模板。 . 我的项目文件夹中也有我的模板文件夹。 .但它是空的，不知道它是干什么用的。 .

你能帮我解决这个问题吗？ ？

非常感谢你们，我非常感谢你们的帮助。 .

Environment:


Request Method: GET
Request URL: http://127.0.0.1:8000/admin/APPLICATION/worldborder/245/

Django Version: 1.6.1
Python Version: 2.7.0 
Installed Applications:
('django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'django.contrib.admin',
 'APPLICATION')
Installed Middleware:
 ('django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware')

Template Loader Error:
Django tried loading these templates, in this order:
Using loader django.template.loaders.filesystem.Loader:
Using loader django.template.loaders.app_directories.Loader:
C:\Python27\lib\site-packages\django\contrib\admin\templates\gis\admin\osm.html (File does not exist)
C:\Python27\lib\site-packages\django\contrib\auth\templates\gis\admin\osm.html (File does not exist)
C:\Python27\lib\site-packages\django\contrib\admin\templates\gis\admin\osm.html (File does not exist)



Template error:
In template C:\Python27\lib\site-packages\django\contrib\admin\templates\admin\includes\fieldset.html, error at line 19
  gis/admin/osm.html
  9 :             {% for field in line %}


  10 :                 <div{% if not line.fields|length_is:'1' %} class="field-box{% if field.field.name %} field-{{ field.field.name }}{% endif %}{% if not field.is_readonly and field.errors %} errors{% endif %}"{% elif field.is_checkbox %} class="checkbox-row"{% endif %}>


  11 :                     {% if not line.fields|length_is:'1' and not   field.is_readonly %}{{ field.errors }}{% endif %}


  12 :                     {% if field.is_checkbox %}


  13 :                         {{ field.field }}{{ field.label_tag }}


  14 :                     {% else %}


  15 :                         {{ field.label_tag }}


  16 :                         {% if field.is_readonly %}


  17 :                             <p>{{ field.contents|linebreaksbr }}</p>


  18 :                         {% else %}


  19 :                              {{ field.field }} 


 20 :                         {% endif %}


 21 :                     {% endif %}


 22 :                     {% if field.field.help_text %}


 23 :                         <p class="help">{{ field.field.help_text|safe }}</p>


 24 :                     {% endif %}


 25 :                 </div>


 26 :             {% endfor %}


 27 :         </div>


 28 :     {% endfor %}


 29 : </fieldset>


 Traceback:
 File "C:\Python27\lib\site-packages\django\core\handlers\base.py" in get_response
 139.                 response = response.render()
 File "C:\Python27\lib\site-packages\django\template\response.py" in render
 105.             self.content = self.rendered_content
 File "C:\Python27\lib\site-packages\django\template\response.py" in rendered_content
 82.         content = template.render(context)
 File "C:\Python27\lib\site-packages\django\template\base.py" in render
 140.             return self._render(context)
 File "C:\Python27\lib\site-packages\django\template\base.py" in _render
 134.         return self.nodelist.render(context)
 File "C:\Python27\lib\site-packages\django\template\base.py" in render
 840.                 bit = self.render_node(node, context)
 File "C:\Python27\lib\site-packages\django\template\debug.py" in render_node
 78.             return node.render(context)
 File "C:\Python27\lib\site-packages\django\template\loader_tags.py" in render
   123.         return compiled_parent._render(context)
 File "C:\Python27\lib\site-packages\django\template\base.py" in _render
   134.         return self.nodelist.render(context)
 File "C:\Python27\lib\site-packages\django\template\base.py" in render
   840.                 bit = self.render_node(node, context)
 File "C:\Python27\lib\site-packages\django\template\debug.py" in render_node
   78.             return node.render(context)
 File "C:\Python27\lib\site-packages\django\template\loader_tags.py" in render
   123.         return compiled_parent._render(context)
 File "C:\Python27\lib\site-packages\django\template\base.py" in _render
   134.         return self.nodelist.render(context)
 File "C:\Python27\lib\site-packages\django\template\base.py" in render
   840.                 bit = self.render_node(node, context)
 File "C:\Python27\lib\site-packages\django\template\debug.py" in render_node
   78.             return node.render(context)
 File "C:\Python27\lib\site-packages\django\template\loader_tags.py" in render
   62.             result = block.nodelist.render(context)
 File "C:\Python27\lib\site-packages\django\template\base.py" in render
   840.                 bit = self.render_node(node, context)
 File "C:\Python27\lib\site-packages\django\template\debug.py" in render_node
   78.             return node.render(context)
 File "C:\Python27\lib\site-packages\django\template\loader_tags.py" in render
   62.             result = block.nodelist.render(context)
 File "C:\Python27\lib\site-packages\django\template\base.py" in render
   840.                 bit = self.render_node(node, context)
 File "C:\Python27\lib\site-packages\django\template\debug.py" in render_node
   78.             return node.render(context)
 File "C:\Python27\lib\site-packages\django\template\defaulttags.py" in render
   196.                         nodelist.append(node.render(context))
 File "C:\Python27\lib\site-packages\django\template\loader_tags.py" in render
   155.         return self.render_template(self.template, context)
 File "C:\Python27\lib\site-packages\django\template\loader_tags.py" in render_template
   137.         output = template.render(context)
 File "C:\Python27\lib\site-packages\django\template\base.py" in render
   140.             return self._render(context)
 File "C:\Python27\lib\site-packages\django\template\base.py" in _render
   134.         return self.nodelist.render(context)
 File "C:\Python27\lib\site-packages\django\template\base.py" in render
   840.                 bit = self.render_node(node, context)
 File "C:\Python27\lib\site-packages\django\template\debug.py" in render_node
   78.             return node.render(context)
 File "C:\Python27\lib\site-packages\django\template\defaulttags.py" in render
   196.                         nodelist.append(node.render(context))
 File "C:\Python27\lib\site-packages\django\template\defaulttags.py" in render
   196.                         nodelist.append(node.render(context))
 File "C:\Python27\lib\site-packages\django\template\defaulttags.py" in render
   305.                 return nodelist.render(context)
 File "C:\Python27\lib\site-packages\django\template\base.py" in render
   840.                 bit = self.render_node(node, context)
 File "C:\Python27\lib\site-packages\django\template\debug.py" in render_node
   78.             return node.render(context)
 File "C:\Python27\lib\site-packages\django\template\defaulttags.py" in render
   305.                 return nodelist.render(context)
 File "C:\Python27\lib\site-packages\django\template\base.py" in render
   840.                 bit = self.render_node(node, context)
 File "C:\Python27\lib\site-packages\django\template\debug.py" in render_node
   78.             return node.render(context)
 File "C:\Python27\lib\site-packages\django\template\debug.py" in render
   91.             output = force_text(output)
 File "C:\Python27\lib\site-packages\django\utils\encoding.py" in force_text
   100.                 s = s.__unicode__()
 File "C:\Python27\lib\site-packages\django\forms\forms.py" in __str__
   425.         return self.as_widget()
 File "C:\Python27\lib\site-packages\django\forms\forms.py" in as_widget
   475.         return widget.render(name, self.value(), attrs=attrs)
 File "C:\Python27\lib\site-packages\django\contrib\gis\admin\widgets.py" in render
   81.                                        context_instance=geo_context)
 File "C:\Python27\lib\site-packages\django\template\loader.py" in render_to_string
   162.         t = get_template(template_name)
 File "C:\Python27\lib\site-packages\django\template\loader.py" in get_template
   138.     template, origin = find_template(template_name)
 File "C:\Python27\lib\site-packages\django\template\loader.py" in find_template
   131.     raise TemplateDoesNotExist(name)

 Exception Type: TemplateDoesNotExist at /admin/APPLICATION/worldborder/245/
 Exception Value: gis/admin/osm.html

Answer 1

您可以轻松创建的第一张 map 位于您的管理部分

管理员.py

from django.contrib.gis import admin
from .models import MyLayer

admin.site.register(MyLayer, admin.GeoModelAdmin)

网址.py

from django.conf.urls import patterns, url, include
from django.contrib.gis import admin

admin.autodiscover()

urlpatterns = patterns('',
    url(r'^admin/', include(admin.site.urls)),
)

检查是否在 settings.py 中启用了管理应用。

然后转到您的导航器 localhost/myapp/admin。 您应该会在项目的描述中看到一张 map 。

---

其他方式:在 python 中获取您的 geom 数据，从中生成 GeoJSON 并将其发送到 OpenLayer map :

需要 vectorformats 和 simplejson 包

View .py

#-*- coding: utf-8 -*-
from django.shortcuts import render, redirect
from vectorformats.Formats import Django, GeoJSON

from mysite.models import MyLayer


def geojson(request):
    ly = MyLayer.objects.filter(name='xxx')
    djf = Django.Django(geodjango='mpoly', properties=['name'])
    geoj = GeoJSON.GeoJSON()
    my_geojson = geoj.encode(djf.decode(ly))
    return render(request, "mysite_temp/map.html", {'my_geojson': my_geojson})

在模板中，创建 mysite_temp 文件夹和 map.html 文件。 如果您只在 map.html 中编写 { {my_geojson} }，您将看到 GeoJSON 的内容

在 map.html 中创建 OpenLayer map :

<!DOCTYPE html>
<html>
    <head>
    <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
        <script src="http://openlayers.org/api/OpenLayers.js"></script> 
    <style>
        html,body {
            height: 99%;
            width: 99%;
        }
        #map {
            width: 100%;
            height: 100%;
            border: 1px solid black;
        }   
    </style>

    <script type="text/javascript">
            var map;

            function init(){
        map = new OpenLayers.Map('map');
                var base_layer = new OpenLayers.Layer.WMS( "OpenLayers WMS",
               "http://vmap0.tiles.osgeo.org/wms/vmap0?", {layers: 'basic'} );
            map.addLayer(base_layer);

        var layer = new OpenLayers.Layer.Vector("layername");
        map.addLayer(layer);

        var format = new OpenLayers.Format.GeoJSON();
        var feat = format.read({{my_geojson|safe}});  
        layer.addFeatures(feat);

        map.setCenter(new OpenLayers.LonLat(l_val,L_val),zoom_val);
        map.addControl(new OpenLayers.Control.LayerSwitcher());
       }
        </script>
    </head>
    <body onload = "init()">
    <div id="map"></div>
    </body>
</html>

干杯!