[ADD] report_csv

report_csv/report/report_csv.py

@@ -0,0 +1,54 @@
+# Copyright 2019 Creu Blanca
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
+
+from io import StringIO
+
+from odoo import models
+
+import logging
+_logger = logging.getLogger(__name__)
+
+try:
+    import csv
+except ImportError:
+    _logger.debug('Can not import csvwriter`.')
+
+
+class ReportCSVAbstract(models.AbstractModel):
+    _name = 'report.report_csv.abstract'
+
+    def _get_objs_for_report(self, docids, data):
+        """
+        Returns objects for csv report.  From WebUI these
+        are either as docids taken from context.active_ids or
+        in the case of wizard are in data.  Manual calls may rely
+        on regular context, setting docids, or setting data.
+
+        :param docids: list of integers, typically provided by
+            qwebactionmanager for regular Models.
+        :param data: dictionary of data, if present typically provided
+            by qwebactionmanager for TransientModels.
+        :param ids: list of integers, provided by overrides.
+        :return: recordset of active model for ids.
+        """
+        if docids:
+            ids = docids
+        elif data and 'context' in data:
+            ids = data["context"].get('active_ids', [])
+        else:
+            ids = self.env.context.get('active_ids', [])
+        return self.env[self.env.context.get('active_model')].browse(ids)
+
+    def create_csv_report(self, docids, data):
+        objs = self._get_objs_for_report(docids, data)
+        file_data = StringIO()
+        file = csv.DictWriter(file_data, **self.csv_report_options())
+        self.generate_csv_report(file, data, objs)
+        file_data.seek(0)
+        return file_data.read(), 'csv'
+
+    def csv_report_options(self):
+        return {'fieldnames': []}
+
+    def generate_csv_report(self, file, data, objs):
+        raise NotImplementedError()