override import template from suit, to add our warning message, fixes #4

voseq/core/templates/admin/public_interface/vouchers/batch_import.html

@@ -0,0 +1,97 @@
+{% extends "admin/import_export/base.html" %}
+{% load url from future %}
+{% load i18n admin_urls import_export_tags %}
+
+{% block breadcrumbs_last %}
+    {% trans "Import" %}
+{% endblock %}
+
+{% block content %}
+
+    {% if not confirm_form %}
+        <form action="{{ form_url }}" method="POST" id="{{ opts.module_name }}_form" enctype="multipart/form-data" class="form-horizontal">
+            {% csrf_token %}
+
+
+            <div class="alert alert-info">
+                {% trans "This importer will import the following fields: " %}
+                {% for f in fields %}
+                    <code>{{ f }}</code>
+                {% endfor %}
+            </div>
+
+            <div class="alert alert-danger">
+                {% trans "Make sure to include those fieldnames as headers in the first row of your data files!" %}
+            </div>
+
+            {% include 'suit/form_as_fieldset.html' %}
+            <div class="submit-row submit-row-bottom">
+                <input type="submit" value="{% trans "Import" %}" class="btn btn-info"/>
+            </div>
+
+        </form>
+    {% endif %}
+
+    {% if result %}
+        {% if result.has_errors %}
+            <div class="alert alert-error alert-block">
+                <h4>{% trans "Errors" %}</h4>
+                <ul>
+                    {% for error in result.base_errors %}
+                        <li>{{ error.error }}</li>
+                    {% endfor %}
+                    {% for line, errors in result.row_errors %}
+                        {% for error in errors %}
+                            <li>
+                                {% trans "Line number" %}: {{ line }} - {{ error.error }}
+                                <pre class="traceback">{{ error.traceback|linebreaks }}</pre>
+                            </li>
+                        {% endfor %}
+                    {% endfor %}
+                </ul>
+            </div>
+        {% else %}
+
+            <h2>{% trans "Preview" %}</h2>
+            <table class="table table-bordered table-hover table-condensed table-striped">
+                <thead>
+                <tr>
+                    <th></th>
+                    {% for field in fields %}
+                        <th>{{ field }}</th>
+                    {% endfor %}
+                </tr>
+                </thead>
+                {% for row in result.rows %}
+                    <tr>
+                        <td>
+                            {% if row.import_type == 'new' %}
+                                {% trans "New" %}
+                            {% elif row.import_type == 'skip' %}
+                                {% trans "Skipped" %}
+                            {% elif row.import_type == 'delete' %}
+                                {% trans "Delete" %}
+                            {% elif row.import_type == 'update' %}
+                                {% trans "Update" %}
+                            {% endif %}
+                        </td>
+                        {% for field in row.diff %}
+                            <td>
+                                {{ field }}
+                            </td>
+                        {% endfor %}
+                    </tr>
+                {% endfor %}
+            </table>
+        {% endif %}
+
+    {% endif %}
+
+    {% if confirm_form %}
+        <form action="{% url opts|admin_urlname:"process_import" %}" method="POST">
+            {% csrf_token %}
+            {{ confirm_form.as_p }}
+            <input class="btn btn-success" name="confirm" type="submit" value="{% trans "Confirm import" %}">
+        </form>
+    {% endif %}
+{% endblock %}

voseq/public_interface/admin.py

@@ -43,6 +43,8 @@ class Meta:
 
 # Customize what and the way you show it
 class VouchersAdmin(ImportExportModelAdmin):
+    import_template_name = 'admin/public_interface/vouchers/batch_import.html'
+
     list_display = ['code', 'genus', 'species', 'sex', 'voucher', 'country', 'collector']
     ordering = ['code']
     search_fields = ['=code', '=genus', '=species']