Refreshing data before editing
In an environment where data can be updated frequently by multiple users, it is important to ensure that any editing is performed on the latest data that is available. This helps to prevent against data loss due to overlapping edits between data loads.
Editor has the ability to refresh the data to be edited at the point when the user triggers editing for a row. This is done by an Ajax call to request the latest data, which is then displayed in the form, making sure the user has up to date information.
To enable this option use the refresh
option of edit
/ remove
, or enable the refresh
option in the form-options
object.
To see this behaviour in action, open this example in two different windows. Edit a row in one window and then edit that same row in the other window. You'll see the data in the second update to the changes made from the first window.
This data update also applies to the delete action. In this example the first name is displayed in a list when deleting records so you can see the data being updated when the action is triggered.
Name | Position | Office | Extn. | Start date | Salary |
---|---|---|---|---|---|
Name | Position | Office | Extn. | Start date | Salary |
- Javascript
- HTML
- CSS
- Ajax
- Server-side script
- Comments
The Javascript shown below is used to initialise the table shown in this example:
var editor = new DataTable.Editor({
ajax: '../php/staff.php',
fields: [
{
label: 'First name:',
name: 'first_name'
},
{
label: 'Last name:',
name: 'last_name'
},
{
label: 'Position:',
name: 'position'
},
{
label: 'Office:',
name: 'office'
},
{
label: 'Extension:',
name: 'extn'
},
{
label: 'Start date:',
name: 'start_date',
type: 'datetime'
},
{
label: 'Salary:',
name: 'salary'
}
],
table: '#example'
});
$('#example').DataTable({
ajax: '../php/staff.php',
columns: [
{
data: null,
render: function (data, type, row) {
// Combine the first and last names into a single table field
return data.first_name + ' ' + data.last_name;
}
},
{ data: 'position' },
{ data: 'office' },
{ data: 'extn' },
{ data: 'start_date' },
{ data: 'salary', render: DataTable.render.number(null, null, 0, '$') }
],
layout: {
topStart: {
buttons: [
{extend: 'create', editor: editor},
{extend: 'edit', editor: editor, refresh: true},
{
extend: 'remove',
editor: editor,
refresh: true,
formMessage: function (e, dt) {
let rows = dt
.rows({selected: true})
.data()
.map(data => data.first_name + ' ' + data.last_name);
return (
'Are you sure you want to delete the entries for the ' +
'following? <ul><li>' +
rows.join('</li><li>') +
'</li></ul>'
);
}
}
]
}
},
select: true
});
const editor = new DataTable.Editor({
ajax: '../php/staff.php',
fields: [
{
label: 'First name:',
name: 'first_name'
},
{
label: 'Last name:',
name: 'last_name'
},
{
label: 'Position:',
name: 'position'
},
{
label: 'Office:',
name: 'office'
},
{
label: 'Extension:',
name: 'extn'
},
{
label: 'Start date:',
name: 'start_date',
type: 'datetime'
},
{
label: 'Salary:',
name: 'salary'
}
],
table: '#example'
});
new DataTable('#example', {
ajax: '../php/staff.php',
columns: [
{
data: null,
render: (data) => data.first_name + ' ' + data.last_name
},
{data: 'position'},
{data: 'office'},
{data: 'extn'},
{data: 'start_date'},
{data: 'salary', render: DataTable.render.number(null, null, 0, '$')}
],
layout: {
topStart: {
buttons: [
{extend: 'create', editor: editor},
{extend: 'edit', editor: editor, refresh: true},
{
extend: 'remove',
editor: editor,
// refresh: true,
formMessage: function (e, dt) {
let rows = dt
.rows({selected: true})
.data()
.map(data => data.first_name + ' ' + data.last_name);
return (
'Are you sure you want to delete the entries for the ' +
'following? <ul><li>' +
rows.join('</li><li>') +
'</li></ul>'
);
}
}
]
}
},
select: true
});
In addition to the above code, the following Javascript library files are loaded for use in this example:
The HTML shown below is the raw HTML table element, before it has been enhanced by DataTables:
This example uses a little bit of additional CSS beyond what is loaded from the library files (below), in order to correctly display the table. The additional CSS used is shown below:
div.DTE_Form_Info ul {
text-align: left;
margin-left: 20%;
}
The following CSS library files are loaded for use in this example to provide the styling of the table:
This table loads data by Ajax. The latest data that has been loaded is shown below. This data will update automatically as any additional data is loaded.
The script used to perform the server-side interaction for this demo is shown below. This server uses PHP, so the PHP script is shown, however our download packages include the equivalent script for other platforms, including .NET and Node.js. Server-side scripts can be written in any language, using the protocol described in the Editor documentation.
Other examples
Simple initialisation
- Basic initialisation
- Multi-row editing
- Field types
- Setting defaults
- Local table editing
- Internationalisation (local)
- Internationalisation (from JSON file)
- Server-side processing
- Custom form layout / templates (attributes)
- Custom form layout / templates (tags)
- Join tables - working with multiple SQL tables
- Refreshing data before editing
Advanced initialisation
- Data shown only in the form
- Data shown in table only
- Multi-item editing (rows, columns, cells)
- REST interface
- Complex (nested) JSON data source
- Ajax override - using localStorage for the data source
- Row ID source specification
- Compound database primary key
- DOM sourced table
- SQL VIEW
- Join tables - self referencing join
- Join tables - link table
- Join tables - Cascading lists
- Join tables - one-to-many join
- File upload
- File upload (many)
- Parent child editor
Dates and time
- Date picker
- Formatted dates (client-side with Luxon)
- Formatted dates (client-side with Moment.js)
- Formatted dates (server-side)
- Date and time input
- Time inputs
- Time increment options
- Options - min and max dates
- Options - always visible
- Options - week numbers
- Options - disable days
- Internationalisation
DataTables extensions
- AutoFill - Excel like AutoFill feature
- AutoFill + Buttons - Combining
- Buttons - Export buttons
- Buttons - CSV import
- ColumnControl - basic search
- ColumnControl - list search
- ColumnControl - formatted date and time
- KeyTable - Excel like keyboard navigation
- Responsive - Automatic column hiding
- RowReorder - Draggable rows
- SearchBuilder - Complex search operations
- SearchBuilder - Predefined criteria
- SearchBuilder - Select elements
- SearchPanes - Search lists
- SearchPanes - Cascade panes
- SearchPanes - View total
Inline editing
- Simple inline editing
- Tab between columns
- Editing options - submit on blur
- Editing options - submit full row data
- Inline editing with a submit button
- Edit icon
- Joined tables
- Selected columns only
- Responsive integration
- FixedColumns integration
- Server-side processing
- Whole row - icon controls
- Whole row - any cell activation
- Whole row - inline create
- Whole row - blur submit
Styling
- Bootstrap 3
- Bootstrap 4
- Bootstrap 5
- Bootstrap 5 with floating labels
- Foundation
- Bulma
- Fomantic-UI (formally Semantic-UI)
- jQuery UI
- Field display styling options
- Multi-column layout
- Large window layout
- Stacked inputs
- Envelope display controller
- Envelope display with in table controls
- Custom form layout / templates