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       
(Showing Draft Content)

数据过滤

在某些条件下,用户只想看到经过一些条件筛选后的数据,或者他们想在一个报告中通过主外键合并多个数据表。

在这种情况下,SpreadJS 允许你在模板单元格中设置过滤条件来筛选数据。

要在报表模板中配置数据过滤条件,需要在 DataManager 中定义表格源,在模板单元格中配置tableNamecolumnName(位于dataColumn选项内),最后使用模板单元格中的filter属性添加所需的过滤条件。

可以使用以下任何方法在报表中过滤数据。

  • 通过静态值过滤数据

  • 通过公式过滤数据

  • 通过连接表过滤数据

数据过滤的几个条件规则如下:

过滤条件规则

描述

filterByCondition


ConditionRuleValueType

静态过滤条件,过滤值数据类型为字符串

根据ConditionRuleOperator和值来过滤记录

ConditionRuleCellType

单元格名称(如A1)

当单元格值为静态值时,过滤条件与ConditionRuleValueType相同

当单元格具有dataColumn数据绑定时,过滤条件与ConditionRuleDataColumnType相同

ConditionRuleDataColumnType

表连接条件,通过ConditionRuleOperator将当前表列与目标表列连接。

ConditionRuleParameterType

使用现有参数名称的静态过滤条件。

ConditionRuleFormulaType

静态过滤条件,用户可以在此处设置公式。

filterByFormula


FilterConditionFormulaRule

静态过滤条件,用于过滤与公式规则匹配的记录

此处,SpreadJS不支持公式中的单元格引用,例如“=YEAR([@orderDate])=A1”

ConditionRule

ConditionRule列是带有表字段的公式

以下代码示例展示了数据过滤的几种用法:

// ConditionRule value is static value. 
// Filter by CustomerId Equals to "VINET".
templateSheet.setTemplateCell(2, 0, {
       type: "Group",
       binding: `Orders[customerId]`,
       filter: {
            condition: {
                 column: "customerId",
                 operator: "Equal",
                 value: "VINET"
            }
       }
});
templateSheet.setTemplateCell(2, 1, {
      type: "Group",
      binding: `Orders[employeeId]`,
});

// ConditionRule Value is CellName, cell value is static value.
templateSheet.setValue(1, 0, 'VINET');
templateSheet.setTemplateCell(1, 1, {
        type: "Group",
        binding: `Orders[customerId]`,
        filter: {
           condition: {
                  column: "customerId",
                  operator: "Equal",
                  cell: "A2"
            }
       }
});
templateSheet.setTemplateCell(1, 2, {
        type: "Group",
        binding: `Orders[employeeId]`,
});

// Join Table Condition.
// Add table relationship.
spread.dataManager().addRelationship(customerTable, "Id", "orderTable", ordersTable, "customerId", "customerTable");
templateSheet.setTemplateCell(2, 1, { // B1
         type: "List",
         binding: "Customers[CompanyName]",
         filter: {
               "condition": {
                        "column": "id",
                        "operator": "Equal",
                        "dataColumn": {
                            "tableName": "Orders",
                            "columnName": "customerId"
                        }
               }
       }
});

使用设计器过滤数据

您也可以通过报告单元属性面板中可用的过滤选项,使用设计器来过滤数据。

image

您可以添加多个静态过滤条件、表连接条件或公式过滤条件,并且还可以在过滤对话框中更改规则顺序或删除规则。

image

以下表格展示了过滤对话框中存在的属性以及它们的描述:

属性

描述

关系

显示两个条件之间的关系。

展示当前节点表格列的列表。您也可以使用表格列输入公式,例如 =YEAR([@orderDate])。

操作符

展示所有过滤条件操作符列表。

用于切换到不同的数据类型并输入数据值。

括号

用于改变条件的优先级。左括号和右括号必须始终匹配。

规则类型

指定过滤规则的类型。如果类型是条件,您可以选择列、操作符或值。如果规则类型是公式,只能设置公式值。