Adding the createlayer contrib application, as per GNIP GeoNode#3269

docs/tutorials/admin/admin_mgmt_commands/index.txt

@@ -118,6 +118,57 @@ Additional options::
       -h, --help            show this help message and exit
 
 
+createvectorlayer
+=================
+
+Create an empty PostGIS vector layer in GeoNode.
+
+Usage::
+
+    python manage.py createvectorlayer name [options]
+
+Additional options::
+
+    manage.py createvectorlayer [-h] [--version] [-v {0,1,2,3}]
+                                   [--settings SETTINGS]
+                                   [--pythonpath PYTHONPATH] [--traceback]
+                                   [--no-color] [--user USER]
+                                   [--geometry GEOMETRY]
+                                   [--attributes ATTRIBUTES] [--title TITLE]
+                                   name
+
+    Create an empty PostGIS vector layer in GeoNode.
+
+    positional arguments:
+      name
+
+    optional arguments:
+      -h, --help            show this help message and exit
+      --version             show program's version number and exit
+      -v {0,1,2,3}, --verbosity {0,1,2,3}
+                            Verbosity level; 0=minimal output, 1=normal output,
+                            2=verbose output, 3=very verbose output
+      --settings SETTINGS   The Python path to a settings module, e.g.
+                            "myproject.settings.main". If this isn't provided, the
+                            DJANGO_SETTINGS_MODULE environment variable will be
+                            used.
+      --pythonpath PYTHONPATH
+                            A directory to add to the Python path, e.g.
+                            "/home/djangoprojects/myproject".
+      --traceback           Raise on CommandError exceptions
+      --no-color            Don't colorize the command output.
+      --user USER           Name of the user account which should own the created
+                            layer
+      --geometry GEOMETRY   Geometry type of the layer to be created. Can be
+                            Point, LineString or Polygon. Default is Point
+      --attributes ATTRIBUTES
+                            A json representation of the attributes to create.
+                            Example: { "field_str": "string", "field_int":
+                            "integer", "field_date": "date", "field_float":
+                            "float"}
+      --title TITLE         Title for the layer to be created.
+
+
 fixsitename
 ===========
 

docs/tutorials/users/managing_layers/create.txt

@@ -0,0 +1,22 @@
+.. _layers.create:
+
+Creating empty layers
+=====================
+
+In GeoNode it is possible to create empty layers, that can be populated with features at a later stage using the mapping client editing tools.
+
+This is possible using the *createlayer* application, which can be enabled if GeoNode is installed with PostGIS.
+
+Once the application is enabled in GeoNode you will be able to create an empty layer by browsing to "Data > Create Layer". You will see a form like this:
+
+.. figure:: img/layer_create.png
+
+Fill the form as needed:
+
+* give a layer name
+* give a layer title
+* assign a geometry for the layer (Points, Lines, Polygons)
+* add as many attributes as needed. For each attribute provide a name and a type. Type can be string, integer, float and date
+* assign permissions as needed
+
+Now by clicking the "Create" button your new empty layer should be created.

docs/tutorials/users/managing_layers/index.txt

@@ -10,8 +10,8 @@ In this section, you will learn how to create a new layer by uploading a local d
 .. toctree::
    :maxdepth: 2
 
-   upload 
+   upload
    info
    share
    more
-
+   create

geonode/contrib/createlayer/forms.py

@@ -0,0 +1,51 @@
+# -*- coding: utf-8 -*-
+#########################################################################
+#
+# Copyright (C) 2017 OSGeo
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+#########################################################################
+
+from django import forms
+
+
+GEOMETRY_TYPES = (
+    ('Point', 'Points'),
+    ('LineString', 'Lines'),
+    ('Polygon', 'Polygons'),
+)
+
+
+class NewLayerForm(forms.Form):
+    """
+    A form to create an empty layer in PostGIS.
+    """
+    name = forms.CharField(label='Layer name', max_length=255)
+    title = forms.CharField(label='Layer title', max_length=255)
+    geometry_type = forms.ChoiceField(choices=GEOMETRY_TYPES)
+
+    permissions = forms.CharField(
+        widget=forms.HiddenInput(
+            attrs={
+                'name': 'permissions',
+                'id': 'permissions'}),
+        required=True)
+
+    attributes = forms.CharField(
+        widget=forms.HiddenInput(
+            attrs={
+                'name': 'attributes',
+                'id': 'attributes'}),
+        required=True)

geonode/contrib/createlayer/management/commands/createvectorlayer.py

@@ -0,0 +1,59 @@
+# -*- coding: utf-8 -*-
+#########################################################################
+#
+# Copyright (C) 2017 OSGeo
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+#########################################################################
+
+from django.core.management.base import BaseCommand
+
+from geonode.people.utils import get_valid_user
+from geonode.contrib.createlayer.utils import create_layer
+
+
+class Command(BaseCommand):
+    help = "Create an empty PostGIS vector layer in GeoNode."
+
+    def add_arguments(self, parser):
+        # positional arguments
+        parser.add_argument('name', type=str)
+        # named (optional arguments)
+        parser.add_argument('--user',
+                            help='Name of the user account which should own the created layer')
+        parser.add_argument('--geometry',
+                            default='Point',
+                            help=('Geometry type of the layer to be created. '
+                                  'Can be Point, LineString or Polygon. Default is Point')
+                            )
+        parser.add_argument('--attributes',
+                            help=('A json representation of the attributes to create. '
+                                  'Example: '
+                                  '{ "field_str": "string", "field_int": "integer", '
+                                  '"field_date": "date", "field_float": "float"}')
+                            )
+        parser.add_argument('--title',
+                            default='No title',
+                            help='Title for the layer to be created.'
+                            )
+
+    def handle(self, *args, **options):
+        name = options.get('name')
+        username = options.get('user')
+        user = get_valid_user(username)
+        title = options.get('title')
+        geometry_type = options.get('geometry')
+        attributes = options.get('attributes')
+        create_layer(name, title, user, geometry_type, attributes)

geonode/contrib/createlayer/templates/createlayer/layer_create.html

@@ -0,0 +1,112 @@
+{% extends "geonode_base.html" %}
+{% load url from future %}
+{% load i18n %}
+{% load bootstrap_tags %}
+{% load staticfiles %}
+
+{% block title %} {% trans "Create Layer"  %} - {{ block.super }}  {% endblock %}
+
+{% block body_class %}layer create{% endblock %}
+
+
+{% block head %}
+
+{{ block.super }}
+{% endblock %}
+
+{% block body_outer %}
+
+<div class="page-header">
+  <a href="{% url "layer_browse" %}" class="btn btn-primary pull-right">{% trans "Explore Layers" %}</a>
+  <h2 class="page-title">{% trans "Create an empty layer" %}</h2>
+</div>
+
+<div class="row">
+  <div class="col-md-8">
+
+    {% if error %}
+    <div id="errors" class="alert alert-danger">
+      <p>{{ error }}</p>
+    </div>
+    {% endif %}
+
+    <section>
+      <form id="layer-create-form"  method="post" action="{% url "layer_create" %}">
+        {% csrf_token %}
+        {{ form|as_bootstrap }}
+
+        <div class="input-attrs-wrap">
+          <button id="add-attr-button" class="add-attr-button btn btn-primary">{% trans "Add Attribute" %}</button>
+        </div>
+
+        <button type="submit" id="layer-create-button" class="btn btn-danger" style="margin-top:20px">{% trans "Create" %}</button>
+
+      </form>
+    </section>
+
+  </div>
+
+  {% if GEONODE_SECURITY_ENABLED %}
+  <div class="col-md-4">
+    <h3>{% trans "Permissions"  %}</h3>
+    <form id="permission_form">
+      {% include "_permissions.html" %}
+    </form>
+  </div>
+  {% endif %}
+</div>
+{% endblock %}
+
+
+{% block extra_script %}
+
+{{ block.super }}
+
+{% if GEONODE_SECURITY_ENABLED %}
+  {% include "_permissions_form_js.html" %}
+{% endif %}
+
+<script type="text/javascript">
+
+    // code inspired by https://www.sanwebe.com/2013/03/addremove-input-fields-dynamically-with-jquery
+    var max_attrs = 50;
+
+    var attr_type_select = '<select class="form-control"" \
+                                  name="attr-type" style="margin-top:15px"> \
+                                <option value="string">String</option> \
+                                <option value="integer">Integer</option> \
+                                <option value="float">Float</option> \
+                                <option value="date">Date</option> \
+                            </select>'
+
+    var x = 1;
+    $(".add-attr-button").click(function(e){
+        e.preventDefault();
+        if(x < max_attrs){
+            $(".input-attrs-wrap").append('<div class="attr-definition"><input type="text" class="form-control" style="margin-top:15px" />' + attr_type_select + '<a href="#" class="remove-attr">Remove</a></div>');
+            x++;
+        }
+    });
+
+    $(".input-attrs-wrap").on("click", ".remove-attr", function(e){
+        e.preventDefault();
+        $(this).parent('div').remove();
+        x--;
+    })
+
+    // copy permissions and attributes
+    $('#layer-create-form').submit(function(){
+      $('#permissions').val(JSON.stringify(permissionsString($('#permission_form'),'base')));
+
+      var attrs = {};
+      $('.attr-definition').each(function(i, obj) {
+          attr_name = obj.childNodes[0].value;
+          attr_type = obj.childNodes[1].value;
+          attrs[attr_name] = attr_type;
+      });
+      $('#attributes').val(JSON.stringify(attrs));
+    });
+
+</script>
+
+{% endblock extra_script %}