Overview
Filament v3.2 introduced a prebuilt action that is able to export rows to a CSV or XLSX file. When the trigger button is clicked, a modal asks for the columns that they want to export, and what they should be labeled. This feature uses job batches and database notifications, so you need to publish those migrations from Laravel. Also, you need to publish the migrations for tables that Filament uses to store information about exports:If you’re using PostgreSQL, make sure that thedatacolumn in the notifications migration is usingjson():$table->json('data').
If you’re using UUIDs for yourYou may use theUsermodel, make sure that yournotifiablecolumn in the notifications migration is usinguuidMorphs():$table->uuidMorphs('notifiable').
ExportAction like so:
Filament\Tables\Actions\ExportAction:
Filament\Tables\Actions\ExportBulkAction:
Creating an exporter
To create an exporter class for a model, you may use themake:filament-exporter command, passing the name of a model:
app/Filament/Exports directory. You now need to define the columns that can be exported.
Automatically generating exporter columns
If you’d like to save time, Filament can automatically generate the columns for you, based on your model’s database columns, using--generate:
Defining exporter columns
To define the columns that can be exported, you need to override thegetColumns() method on your exporter class, returning an array of ExportColumn objects:
Customizing the label of an export column
The label for each column will be generated automatically from its name, but you can override it by calling thelabel() method:
Configuring the default column selection
By default, all columns will be selected when the user is asked which columns they would like to export. You can customize the default selection state for a column with theenabledByDefault() method:
Disabling column selection
By default, user will be asked which columns they would like to export. You can disable this functionality usingcolumnMapping(false):
Calculated export column state
Sometimes you need to calculate the state of a column, instead of directly reading it from a database column. By passing a callback function to thestate() method, you can customize the returned state for that column based on the $record:
Formatting the value of an export column
You may instead pass a custom formatting callback toformatStateUsing(), which accepts the $state of the cell, and optionally the Eloquent $record:
Limiting text length
You maylimit() the length of the cell’s value:
Limiting word count
You may limit the number ofwords() displayed in the cell:
Adding a prefix or suffix
You may add aprefix() or suffix() to the cell’s value:
Exporting multiple values in a cell
By default, if there are multiple values in the column, they will be comma-separated. You may use thelistAsJson() method to list them as a JSON array instead:
Displaying data from relationships
You may use “dot notation” to access columns within relationships. The name of the relationship comes first, followed by a period, followed by the name of the column to display:Counting relationships
If you wish to count the number of related records in a column, you may use thecounts() method:
users is the name of the relationship to count from. The name of the column must be users_count, as this is the convention that Laravel uses for storing the result.
If you’d like to scope the relationship before calculating, you can pass an array to the method, where the key is the relationship name and the value is the function to scope the Eloquent query with:
Determining relationship existence
If you simply wish to indicate whether related records exist in a column, you may use theexists() method:
users is the name of the relationship to check for existence. The name of the column must be users_exists, as this is the convention that Laravel uses for storing the result.
If you’d like to scope the relationship before calculating, you can pass an array to the method, where the key is the relationship name and the value is the function to scope the Eloquent query with:
Aggregating relationships
Filament provides several methods for aggregating a relationship field, includingavg(), max(), min() and sum(). For instance, if you wish to show the average of a field on all related records in a column, you may use the avg() method:
users is the name of the relationship, while age is the field that is being averaged. The name of the column must be users_avg_age, as this is the convention that Laravel uses for storing the result.
If you’d like to scope the relationship before calculating, you can pass an array to the method, where the key is the relationship name and the value is the function to scope the Eloquent query with:
Configuring the export formats
By default, the export action will allow the user to choose between both CSV and XLSX formats. You can use theExportFormat enum to customize this, by passing an array of formats to the formats() method on the action:
getFormats() method on the exporter class, which will set the default formats for all actions that use that exporter:
Modifying the export query
By default, if you are using theExportAction with a table, the action will use the table’s currently filtered and sorted query to export the data. If you don’t have a table, it will use the model’s default query. To modify the query builder before exporting, you can use the modifyQueryUsing() method on the action:
$options argument into the function, which is an array of options for that export:
modifyQuery() method on the exporter class, which will modify the query for all actions that use that exporter:
Configuring the export filesystem
Customizing the storage disk
By default, exported files will be uploaded to the storage disk defined in the configuration file, which ispublic by default. You can set the FILAMENT_FILESYSTEM_DISK environment variable to change this.
While using the public disk a good default for many parts of Filament, using it for exports would result in exported files being stored in a public location. As such, if the default filesystem disk is public and a local disk exists in your config/filesystems.php, Filament will use the local disk for exports instead. If you override the disk to be public for an ExportAction or inside an exporter class, Filament will use that.
In production, you should use a disk such as s3 with a private access policy, to prevent unauthorized access to the exported files.
If you want to use a different disk for a specific export, you can pass the disk name to the disk() method on the action:
boot() method of a service provider such as AppServiceProvider:
getFileDisk() method on the exporter class, returning the name of the disk:
Configuring the export file names
By default, exported files will have a name generated based on the ID and type of the export. You can also use thefileName() method on the action to customize the file name:
getFileName() method on the exporter class, returning a string:
Using export options
The export action can render extra form components that the user can interact with when exporting a CSV. This can be useful to allow the user to customize the behavior of the exporter. For instance, you might want a user to be able to choose the format of specific columns when exporting. To do this, you can return options form components from thegetOptionsFormComponents() method on your exporter class:
options() method on the action:
$options argument into any closure function. For example, you might want to use it inside formatStateUsing() to format a column’s value:
$options argument is passed to all closure functions, you can access it inside limit():
Using a custom user model
By default, theexports table has a user_id column. That column is constrained to the users table:
Export model, the user() relationship is defined as a BelongsTo relationship to the App\Models\User model. If the App\Models\User model does not exist, or you want to use a different one, you can bind a new Authenticatable model to the container in a service provider’s register() method:
users, you should pass that table name to constrained():
Using a polymorphic user relationship
If you want to associate exports with multiple user models, you can use a polymorphicMorphTo relationship instead. To do this, you need to replace the user_id column in the exports table:
boot() method, you should call Export::polymorphicUserRelationship() to swap the user() relationship on the Export model to a MorphTo relationship:
Limiting the maximum number of rows that can be exported
To prevent server overload, you may wish to limit the maximum number of rows that can be exported from one CSV file. You can do this by calling themaxRows() method on the action:
Changing the export chunk size
Filament will chunk the CSV, and process each chunk in a different queued job. By default, chunks are 100 rows at a time. You can change this by calling thechunkSize() method on the action:
Changing the CSV delimiter
The default delimiter for CSVs is the comma (,). If you want to export using a different delimiter, you may override the getCsvDelimiter() method on the exporter class, returning a new one:
Styling XLSX cells
If you want to style the cells of the XLSX file, you may override thegetXlsxCellStyle() method on the exporter class, returning an OpenSpout Style object:
getXlsxHeaderCellStyle() method on the exporter class, returning an OpenSpout Style object:
Customizing the export job
The default job for processing exports isFilament\Actions\Exports\Jobs\PrepareCsvExport. If you want to extend this class and override any of its methods, you may replace the original class in the register() method of a service provider:
job() method on the action, to customize the job for a specific export:
Customizing the export queue and connection
By default, the export system will use the default queue and connection. If you’d like to customize the queue used for jobs of a certain exporter, you may override thegetJobQueue() method in your exporter class:
getJobConnection() method in your exporter class:
Customizing the export job middleware
By default, the export system will only process one job at a time from each export. This is to prevent the server from being overloaded, and other jobs from being delayed by large exports. That functionality is defined in theWithoutOverlapping middleware on the exporter class:
Customizing the export job retries
By default, the export system will retry a job for 24 hours. This is to allow for temporary issues, such as the database being unavailable, to be resolved. That functionality is defined in thegetJobRetryUntil() method on the exporter class:
Customizing the export job tags
By default, the export system will tag each job with the ID of the export. This is to allow you to easily find all jobs related to a certain export. That functionality is defined in thegetJobTags() method on the exporter class:
Customizing the export job batch name
By default, the export system doesn’t define any name for the job batches. If you’d like to customize the name that is applied to job batches of a certain exporter, you may override thegetJobBatchName() method in your exporter class:
Authorization
By default, only the user who started the export may download files that get generated. If you’d like to customize the authorization logic, you may create anExportPolicy class, and register it in your AuthServiceProvider:
view() method of the policy will be used to authorize access to the downloads.
Please note that if you define a policy, the existing logic of ensuring only the user who started the export can access it will be removed. You will need to add that logic to your policy if you want to keep it: