[ADD] General: new doc about exporting data (#695)

general/odoo_basics.rst

@@ -6,4 +6,5 @@ Basics
    :titlesonly:
 
    odoo_basics/choose_language
-   odoo_basics/add_user
+   odoo_basics/add_user
+   odoo_basics/export-data

general/odoo_basics/export-data.rst

@@ -0,0 +1,53 @@
+======================
+Export Data From Odoo
+======================
+
+When working with a database, it sometimes is necessary to export your data in a distinct file. 
+Doing so can help to do reporting over your activities (even if Odoo offers a precise and easy 
+reporting tool with each available application).
+
+With Odoo, you can export the values from any field in any record. To do so, 
+activate the list view on the items that need to be exported, click on *Action*, and, then, 
+on *Export*.
+
+.. image:: media/list-view-export.png
+   :align: center
+   :alt: view of the different things to enable/click to export data
+
+Pretty simple, this action still comes with some specificities. In fact,
+when clicking on *Export*, a pop-up window appears with several
+options for the data to export:
+
+.. image:: media/export-data-overview.png
+   :align: center
+   :alt: overview of all the options to take into account when exporting data in Odoo
+
+1. With the *I want to update data* option ticked, the system only
+   shows the fields which can be imported. This is very helpful in
+   case you want to update existing records. Basically, this works
+   like a filter. Leaving the box unticked gives way more field
+   options because it shows all the fields, not just the ones which
+   can be imported.
+2. When exporting, you can choose between two formats: .csv and .xls.
+   With .csv, items are separated with a comma, while .xls holds information about all the 
+   worksheets in a file, including both content and formatting.
+3. Those are the items you may want to export. Use the arrows to display
+   more sub-field options. Of course, you can use the search bar to
+   find specific fields more easily. To use the search option more
+   efficiently, display all the fields by clicking on all the
+   arrows!
+4. The + button is there to add fields to the “to export” list.
+5. The “handles” next to the selected fields allow you to move the fields up and down to
+   change the order in which they must be displayed in the exported
+   file.
+6. The trashcan is there if you need to remove fields.
+7. For recurring reports, it might be interesting to save export presets. 
+   Select all the needed ones and click on the template bar.
+   There, click on *New template* and give a name to yours. The
+   next time you need to export the same list, simply select the
+   related template.
+
+.. tip::
+   It’s good to keep the field’s external identifier in mind. For example,
+   *Related Company* is equal to *parent_id*. Doing so helps export
+   only what you would like to import next.