Magento – How to create Magento editable grid

I cannot give you the direct answer but I definitely know the way.

For every admin grid magento creates javascript object varienGridMassaction. It is defined in \js\mage\adminhtml\grid.js.

During selecting checkboxes in grid, varienGridMassaction object saves ids of selected rows.

When you select mass action type and press Submit button you are not submitting form in normal meaning of this word. This button runs varienGridMassaction::apply(), which gets all selected ids and sends them with mass action type to the server.

So you cannot simply add inputs and make them be transferred with usual mass action data.

Possible solutions:

• You can rewrite varienGridMassaction to send more data during submit.
• Create one more button and javascript class to process your custom input fields.

You need to use a 'renderer' to generate your column data. This allows you to render out HTML (or anything else) as you column data so you can build things like dropdowns and multiselects. If you use that and want to search by that column, you will probably also want to look at the 'filter_condition_callback'. This allows you to call a custom method when searching by a column.

This seems to be a reasonable, quick summary of the subject.