问题描述：ag-grid Angular中，自定义排序参数显示为未定义。

解决方法示例：

1. 确保在AgGridModule中正确注册了CustomSortComponent组件。

import { AgGridModule } from 'ag-grid-angular';
import { CustomSortComponent } from './custom-sort.component';

@NgModule({
  declarations: [
    CustomSortComponent
  ],
  imports: [
    AgGridModule.withComponents([CustomSortComponent])
  ],
  ...
})
export class AppModule { }

2. 在CustomSortComponent组件中，确保正确处理自定义排序参数。

import { ICellRendererParams, IDoesFilterPassParams, IFilterParams, RowNode, SortModel } from 'ag-grid-community';

@Component({
  selector: 'app-custom-sort',
  template: `
    

      
      
      
      Sort
    
  `,
})
export class CustomSortComponent implements IFilterParams {

  private params: IFilterParams;
  private customSortParam: string;

  // 设置自定义排序参数
  agInit(params: IFilterParams): void {
    this.params = params;
  }

  // 过滤方法
  doesFilterPass(params: IDoesFilterPassParams): boolean {
    return true;
  }

  // 获取自定义排序参数
  getModel(): any {
    return this.customSortParam;
  }

  // 设置自定义排序参数
  setModel(model: any): void {
    this.customSortParam = model;
  }

  // 获取自定义排序参数显示值
  getValue(): any {
    return this.customSortParam;
  }

  // 自定义排序方法
  sort(): void {
    const sortModel: SortModel = [
      {
        colId: this.params.column.getColId(),
        sort: 'asc',
        sortIndex: 0,
        sortedAt: new Date(),
      }
    ];
    this.params.api.setSortModel(sortModel);
  }
}

3. 在AgGrid中使用CustomSortComponent组件。

import { Component } from '@angular/core';
import { CustomSortComponent } from './custom-sort.component';

@Component({
  selector: 'app-root',
  template: `
    
  `,
})
export class AppComponent {
  columnDefs = [
    {
      headerName: 'Column',
      field: 'column',
      sortable: true,
      filter: 'agTextColumnFilter',
      filterParams: {
        filterOptions: ['equals', 'notEquals'],
        newRowsAction: 'keep',
        ...
      },
      // 自定义排序组件
      floatingFilterComponent: 'customSort',
      // 自定义排序参数
      floatingFilterComponentParams: {
        suppressFilterButton: true,
      },
      ...
    },
    ...
  ];

  frameworkComponents = {
    customSort: CustomSortComponent,
  };

  ...
}

以上是解决ag-grid Angular中自定义排序参数显示为未定义的方法示例。请根据具体情况进行调整和修改。