[IMP] base_import: Improve import preview for related fields

normal mode: Importing only regular/basic fields from source file
advanced mode: Importing any related fields from source file(i.e. if detected pattern in header like '<relational_fieldname>/<fname>')

- Rename following checkbox "Show all fields for completion (advanced)" in "Show fields of relation fields (advanced)"
- If the import file contains a column with a field of a relation field, show the column label in the preview, even if "Show fields of relation fields (advanced)" is not checked > to make it less confusing when importing advanced files (e.g. products with attributes)

addons/base_import/models/base_import.py

@@ -500,6 +500,7 @@ class Import(models.TransientModel):
                 'headers_type': header_types or False,
                 'preview': preview,
                 'options': options,
+                'advanced_mode': any([len(models.fix_import_export_id_paths(col)) > 1 for col in headers]),
                 'debug': self.user_has_groups('base.group_no_one'),
             }
         except Exception, error:

addons/base_import/static/src/js/base_import.js

@@ -366,6 +366,7 @@ var DataImport = Widget.extend(ControlPanelMixin, {
         this.$buttons.filter('.o_import_button').add(this.$('.oe_import_file_reload'))
                 .prop('disabled', false);
         this.$el.addClass('oe_import_preview');
+        this.$('input.oe_import_advanced_mode').prop('checked', result.advanced_mode);
         this.$('.oe_import_grid').html(QWeb.render('ImportView.preview', result));
 
         if (result.headers.length === 1) {

addons/base_import/static/src/xml/base_import.xml

@@ -67,9 +67,9 @@
                        id="oe_import_has_header" checked="checked"/>
                 <label for="oe_import_has_header">The first row
                  contains the label of the column</label>
-                <input type="checkbox" class="oe_import_advanced_mode"
+                <input type="checkbox" class="oe_import_advanced_mode" disabled="disabled"
                        id="oe_import_advanced_mode"/>
-                <label for="oe_import_advanced_mode">Show all fields for completion (advanced)</label>
+                <label for="oe_import_advanced_mode">Show fields of relation fields (advanced)</label>
                 <p class="oe_import_noheaders">If the file contains
                 the column names, Odoo can try auto-detecting the
                 field corresponding to the column. This makes imports

addons/base_import/tests/test_base_import.py

@@ -260,7 +260,7 @@ class TestPreview(TransactionCase):
             ['qux', '5', '6'],
         ])
         # Ensure we only have the response fields we expect
-        self.assertItemsEqual(result.keys(), ['matches', 'headers', 'fields', 'preview', 'headers_type', 'options', 'debug'])
+        self.assertItemsEqual(result.keys(), ['matches', 'headers', 'fields', 'preview', 'headers_type', 'options', 'advanced_mode', 'debug'])
 
     @unittest.skipUnless(can_import('xlrd'), "XLRD module not available")
     def test_xls_success(self):
@@ -290,7 +290,7 @@ class TestPreview(TransactionCase):
             ['qux', '5', '6'],
         ])
         # Ensure we only have the response fields we expect
-        self.assertItemsEqual(result.keys(), ['matches', 'headers', 'fields', 'preview', 'headers_type', 'options', 'debug'])
+        self.assertItemsEqual(result.keys(), ['matches', 'headers', 'fields', 'preview', 'headers_type', 'options', 'advanced_mode', 'debug'])
 
     @unittest.skipUnless(can_import('xlrd.xlsx'), "XLRD/XLSX not available")
     def test_xlsx_success(self):
@@ -320,7 +320,7 @@ class TestPreview(TransactionCase):
             ['qux', '5', '6'],
         ])
         # Ensure we only have the response fields we expect
-        self.assertItemsEqual(result.keys(), ['matches', 'headers', 'fields', 'preview', 'headers_type', 'options', 'debug'])
+        self.assertItemsEqual(result.keys(), ['matches', 'headers', 'fields', 'preview', 'headers_type', 'options','advanced_mode', 'debug'])
 
     @unittest.skipUnless(can_import('odf'), "ODFPY not available")
     def test_ods_success(self):
@@ -350,7 +350,7 @@ class TestPreview(TransactionCase):
             ['aux', '5', '6'],
         ])
         # Ensure we only have the response fields we expect
-        self.assertItemsEqual(result.keys(), ['matches', 'headers', 'fields', 'preview', 'headers_type', 'options', 'debug'])
+        self.assertItemsEqual(result.keys(), ['matches', 'headers', 'fields', 'preview', 'headers_type', 'options', 'advanced_mode', 'debug'])
 
 
 class test_convert_import_data(TransactionCase):