通过 Apex 和 Visualforce (Salesforce web) 过滤报告

Question

我正在尝试打印 Salesforce 自定义对象数据库并有一个过滤器。过滤器工作正常，但“全部”过滤器不会将完整表显示为默认值，或者当我从另一个过滤器中单击“全部”时。我怎样才能做到这一点？这是相关的 Apex 代码：public string itemPickValue{get; set;}    public List<QC_Issue__c> issuesList{get; set;}    public List<QC_Issue__c> results;     public List<QC_Issue__c> getIssues() {        results = Database.query(            'SELECT Component_Category__c, Issue_Name__c, Issue_Description__c, Severity_1_Criteria__c, Severity_2_Criteria__c, Severity_3_Criteria__c, File__c FROM QC_Issue__c Order By Component_Category__c, Issue_Name__c'        );        return results;     }    public void getIssuesList() {        if(itemPickValue.equals('All')) issuesList = Database.query('SELECT Component_Category__c, Issue_Name__c, Issue_Description__c, Severity_1_Criteria__c, Severity_2_Criteria__c, Severity_3_Criteria__c, File__c FROM QC_Issue__c');        issuesList = Database.query('SELECT Component_Category__c, Issue_Name__c, Issue_Description__c, Severity_1_Criteria__c, Severity_2_Criteria__c, Severity_3_Criteria__c, File__c FROM QC_Issue__c WHERE Component_Category__c =: itemPickValue');    }这是相关的 Visualforce 代码：<apex:pageBlock title="QC Glossary" id="qc_issues_list">                <h3>Filter by Component Category:</h3>                <br></br>                <!-->Start Filter and List<-->                    <apex:selectList size="1" value="{!itemPickValue}">                        <apex:actionSupport event="onchange" action="{!getIssuesList}" rerender="table"/>                            <apex:selectOption itemLabel="All" itemValue="All"></apex:selectOption>                            <apex:selectOption itemLabel="Animation/VFX" itemValue="Animation/VFX"></apex:selectOption>                    </apex:selectList>                    <br></br>                    <br></br>

Answer 1

我进行了以下更改

• 删除了代码重复，使用 getIssues 方法而不是复制 SOQL 语句。

• 添加了一个 if/else 子句；你的主要问题是getIssuesList你有一个 if 语句，如果 true 将存储完整的结果issuesList，然后立即在下一行用过滤列表覆盖它，尝试使用类别名称“全部”

这里还有很多其他的事情需要指出；但我暂时不说了。

结果：

public String itemPickValue{get; set;}

public List<QC_Issue__c> issuesList{get; set;}

public List<QC_Issue__c> results; 

public List<QC_Issue__c> getIssues() {

    results = Database.query(

        'SELECT Component_Category__c, Issue_Name__c, Issue_Description__c, Severity_1_Criteria__c, Severity_2_Criteria__c, Severity_3_Criteria__c, File__c FROM QC_Issue__c Order By Component_Category__c, Issue_Name__c'

    );

    return results; 

}

public void getIssuesList() {

    if(itemPickValue.equals('All')) {

        issuesList = getIssues();

    } else {

        issuesList = Database.query('SELECT Component_Category__c, Issue_Name__c, Issue_Description__c, Severity_1_Criteria__c, Severity_2_Criteria__c, Severity_3_Criteria__c, File__c FROM QC_Issue__c WHERE Component_Category__c =: itemPickValue');

    }

}