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Angular Data GridSet Filter - APIEnterprise

This section describes how the Set Filter can be controlled programmatically using API calls.

Set Filter Model

Get and set the state of the Set Filter by getting and setting the model on the filter instance.

// get filter instance
const countryFilterComponent = this.gridApi.getFilterInstance('country'); 

// get filter model
const model = countryFilterComponent.getModel(); 

// set filter model and update
countryFilterComponent.setModel({ values: ['Spain', 'Ireland', 'South Africa'] });

// refresh rows based on the filter (not automatic to allow for batching multiple filters)
this.gridApi.onFilterChanged();

The filter model contains an array of string values where each item in the array corresponds to an element to be selected from the set.

Set Filter API

The ISetFilter interface defines the public API for the Set Filter.

Properties available on the ISetFilter<V = string> interface.

getModel
Function
Returns a model representing the current state of the filter, or null if the filter is not active. 
getModel = () => SetFilterModel | null;

interface SetFilterModel {
  filterType?: 'set';
  values: SetFilterModelValue;
}

type SetFilterModelValue = (string | null)[]
setModel
Function
Sets the state of the filter using the supplied model. Providing null as the model will de-activate the filter.

Note: if you are providing values asynchronously to the Set Filter, you need to wait for these changes to be applied before performing any further actions by waiting on the returned grid promise, e.g. filter.setModel({ values: ['a', 'b'] }).then(function() { gridApi.onFilterChanged(); });
setModel = (
    model: SetFilterModel | null
) => void | AgPromise<void>;

interface SetFilterModel {
  filterType?: 'set';
  values: SetFilterModelValue;
}

type SetFilterModelValue = (string | null)[]
getFilterKeys
Function
Returns the full list of unique keys used by the Set Filter. 
getFilterKeys = () => SetFilterModelValue;

type SetFilterModelValue = (string | null)[]
getFilterValues
Function
Returns the full list of unique values used by the Set Filter. 
getFilterValues = () => (V | null)[];
setFilterValues
Function
Sets the values used in the Set Filter on the fly. 
setFilterValues = (values: (V | null)[]) => void;
refreshFilterValues
Function
Refreshes the values shown in the filter from the original source. For example, if a callback was provided, the callback will be executed again and the filter will refresh using the values returned. See Refreshing Values.
refreshFilterValues = () => void;
resetFilterValues
Function
Resets the Set Filter to use values from the grid, rather than any values that have been provided directly. 
resetFilterValues = () => void;
getMiniFilter
Function
Returns the current mini-filter text. 
getMiniFilter = () => string | null;
setMiniFilter
Function
Sets the text in the Mini Filter at the top of the filter (the 'quick search' in the popup). 
setMiniFilter = (
    newMiniFilter: string | null
) => void;
isFilterActive
Function
Returns true if the filter is currently active, otherwise false. If active then 1) the grid will show the filter icon in the column header and 2) the filter will be included in the filtering of the data. 
isFilterActive = () => boolean;
afterGuiAttached
Function
A hook to perform any necessary operation just after the GUI for this component has been rendered on the screen. If a parent popup is closed and reopened (e.g. for filters), this method is called each time the component is shown. This is useful for any logic that requires attachment before executing, such as putting focus on a particular DOM element. 
afterGuiAttached = (
    params?: IAfterGuiAttachedParams
) => void;

interface IAfterGuiAttachedParams {
  // Where this component is attached to. 
  container?: ContainerType;
  // Call this to hide the popup. 
  // i.e useful if your component has an action button and you want to hide the popup after it is pressed.
  hidePopup?: () => void;
  // Set to `true` to not have the component focus its default item. 
  suppressFocus?: boolean;
}

type ContainerType = 
      'columnMenu' 
    | 'contextMenu' 
    | 'toolPanel' 
    | 'floatingFilter'
afterGuiDetached
Function
A hook to perform any necessary operation just after the GUI for this component has been removed from the screen. If a parent popup is opened and closed (e.g. for filters), this method is called each time the component is hidden. This is useful for any logic to reset the UI state back to the model before the component is reopened. 
afterGuiDetached = () => void;

It is important to note that when updating the Set Filter through the API, it is up to the developer to call filterInstance.applyModel() to apply the changes that have been made to the model and then gridOptions.api.onFilterChanged() at the end of the interaction with the filter.

If no call is made to filterInstance.applyModel() then the filter UI will show any changes, but they won't be reflected in the filter model. This will appear as if the user never hit the Apply Button (regardless of whether the Apply Button is active or not).

If no call to gridOptions.api.onFilterChanged() is provided the grid will still show the data relevant to the filter before it was updated through the API.

In the example below, you can see how the filter for the Athlete column is modified through the API and how at the end of the interaction a call to gridOptions.api.onFilterChanged() is performed.

Enabling Case-Sensitivity

By default the API is case-insensitive. You can enable case sensitivity by using the caseSensitive: true filter parameter:

<ag-grid-angular
    [columnDefs]="columnDefs"
    /* other grid options ... */>
</ag-grid-angular>

this.columnDefs = [
    {
        field: 'colour',
        filter: 'agSetColumnFilter',
        filterParams: {
            caseSensitive: true
        }
    }
];

The caseSensitive option also affects Mini-Filter searches and the values presented in the Filter List.

The following example demonstrates the difference in behaviour between caseSensitive: false (the default) and caseSensitive: true:

  • With caseSensitive: false (the default):

    • setModel() will perform case-insensitive matching against available values to decide what is enabled in the Filter List.
    • setFilterValues() will override the available values and force the case of the presented values in the Filter List to those provided.
    • Selected values will be maintained based upon case-insensitive matching.

  • With caseSensitive: true:

    • setModel() will perform case-sensitive matching against available values to decide what is enabled in the Filter List.
    • setFilterValues() will override the available values and force the case of the presented values in the Filter List to those provided.
    • Selected values will be maintained based upon case-sensitive matching.
  • In both cases getModel() and getFilterValues() will return the values with casing that matches those displayed in the Filter List.

Next Up

Continue to the next section to learn about Multi Filters.