Overview
Expected Effect
If you use the filter component linkage function, the option values of the subsequent filter component can vary with the changes of the values in the previous filter component. For example, choose Arizona from the drop-down list of the first filter component (State). You can view that the options in the second filter component (City) are automatically changed to cities belonging to Arizona, as shown in the following figure.
Implementation Method
You can achieve the filter component linkage effect through the default linkage or parameter linkage function.
1. Default Linkage
FineBI supports the default linkage function for the filter component. You just need to bind data with the filter component. Then FineBI can automatically read the association relationship in the bound data, achieving the component linkage effect.
The association relationship in data must be one of the following two types.
Data in the linked component comes from one table.
For two tables with the association relationship, data in the component in front of the linkage component can be from any field of the primary key table, while data in the component behind the linked component can be from any field of the foreign key table.
2. Parameter Linkage
Default Linkage
This document takes the built-in table Regional Data Analysis as an example.
FineBI can automatically achieve the filter component linkage effect if the association relationship exists between two fields.
Creating a Group Table
Drag the fields State and City to Dimension and the field Contract Amount to Indicator, as shown in the following figure.
Adding a Filter Component Named State
1. Add a dashboard, drag the prepared component to the dashboard, and add a Text Drop-down Filter Component, as shown in the following figure.
2. Set the data source for the filter component, drag State to Field, and name the filter component State, as shown in the following figure.
Adding a Filter Component Named City
The setting method is the same with that of the filter component State. Add a text drop-down filter component, drag City to Field, and name the filter component City, as shown in the following figure.
Effect Display
Choose Arizona from the drop-down list of State. You can view that the options in the drop-down list of City are automatically changed to cities belonging to Arizona, as shown in the following figure.
Cancelling Default Linkage
If you do not want the default linkage effect between two filter components, you can customize the control range and cancel the effect.
Click State, click the Edit icon to go to the filter component edit page, and deselect City, as shown in the following figure.
Effect Display
Parameter Linkage
The parameter linkage function can only be used for direct connect data.
This document takes the table Reginal Data Analysis in BIdemo as an example.
Adding a Table
1. Create a SQL dataset with the State parameter and name the dataset Customer (with Parameter).
Create a SQL dataset, enter the SQL statement select * from Regional Data Analysis where 1=1 <parameter> and State in ('${State}') </parameter>, set Default Value to Arizona, and click OK, as shown in the following figure.
2. Create a SQL dataset without the parameter and name the dataset Customer.
Enter the SQL statement select * from Regional Data Analysis, as shown in the following figure.
Crating a Group Table
Create a group table through the SQL dataset Customer (with Parameter). Drag the fields State and City to Dimension, and Count to Indicator, as shown in the following figure.
Adding a Filter Component Named State
1. Add a dashboard, drag the prepared group table to the dashboard, and add a text drop-down filter component, as shown in the following figure.
2. Set the data source for the filter component, drag State to Field, and bind the State parameter (set in the table Customer (with Parameter)), as shown in the following figure.
Note:3. Name the filter component State, as shown in the following figure.
Adding a Filter Component Named City
The setting method is the same with that of the filter component State. Click the table Customer (with Parameter), drag City to Field, and name the filter component City, as shown in the following figure. You do not need to bind the parameter for the filter component.
Effect Display
Choose Arizona from the drop-down list of State. You can view that the options in the drop-down list of City are automatically changed to cities belonging to Arizona, as shown in the following figure.
