Question

我正在使用laravel 5，我有一个更新/编辑表单，其中包含一个组合框。但我无法设置我的组合框值取决于数据库中的内容。你知道怎么做吗？
这是我的控制器：

public function ubahsurat(Request $request)
{
    Surat::where('nomor_surat', '=', $request['nomor_surat'])->update(
                            ['id_jenis_surat' => $request['id_jenis_surat']],

    return redirect('/');
}

这是观点：

    <div class="col-sm-9">
         <select name="id_jenis_surat" class="form-control">
         <option></option>
            @foreach($jenis_surat as $js) 
            <option value="{{ $js->id_jenis_surat }}" > {{ $js->jenis_surat }} </option> 
            @endforeach
        </select>
   </div>

Answer 1

您需要做的只是在有效的项目上设置selected="selected"。

<option value="{{ $js->id_jenis_surat }}" {!! ($conditionForSelected ? "selected=\"selected\"" : "") !!}> {{ $js->jenis_surat }}</option>

将$conditionForSelected替换为确定$js->id_jenis_surat是否为所选当前项目的任何内容。

您的视图向我们展示了更新代码，而不是视图代码。

Answer 2

你可以这样做：

@Configuration
@EnableBatchProcessing
public class BatchConfiguration{

    @Autowired
    public JobBuilderFactory jobBuilderFactory;

    @Autowired
    public StepBuilderFactory stepBuilderFactory;

    @Autowired
    public MongoTemplate mongoTemplate;

    @Autowired
    UnitsRepository unitsRepos;

    @Autowired
    UserRepository userRepository;

    @Autowired
    ElectraService electraService;

    /*@Autowired InfrastructureConfiguration infrastructureConfiguration;*/

    // tag::readerwriterprocessor[]
    @Bean
    @StepScope
    public MongoItemReader<UserBean> reader() {
        MongoItemReader<UserBean> reader = new MongoItemReader<UserBean>();
        reader.setTemplate(mongoTemplate);
        reader.setCollection("user");
        reader.setQuery("{ '_id': 'U3'}");
        reader.setSort(new HashMap<String,Direction>(){{put("_id", Direction.ASC);}});
        reader.setTargetType(UserBean.class);
        return reader;
    }

    @Bean
    public ExceedUsageProcessor processor() {
        return new ExceedUsageProcessor(unitsRepos,electraService);
    }

    @Bean
    public AnomalyProcessor anomalyProcessor() {
        return new AnomalyProcessor(unitsRepos);
    }
    @Bean
    @StepScope
    public MongoItemWriter<DayByDayUsage> writer() {
        MongoItemWriter<DayByDayUsage> writer = new MongoItemWriter<DayByDayUsage>();
        writer.setTemplate(mongoTemplate);
        writer.setCollection("usage");
        return writer;
    }
    // end::readerwriterprocessor[]

    // tag::listener[]

    @Bean
    @StepScope
    public MongoItemWriter<AnomalyBean> anomalyWriter() {
        MongoItemWriter<AnomalyBean> writer = new MongoItemWriter<AnomalyBean>();
        writer.setTemplate(mongoTemplate);
        writer.setCollection("anomaly");
        return writer;
    }

    @Bean
    public ExceedJobNotificationListener listener() {
        return new ExceedJobNotificationListener(mongoTemplate);
    }

    @Bean
    public AnomalyJobListener anomalyListener(){
        return new AnomalyJobListener(mongoTemplate,userRepository);

    }
    // end::listener[]

    // tag::jobstep[]
    @Bean
    public Job notifyUserJob() {
        return jobBuilderFactory.get("notifyUserJob")
                .incrementer(new RunIdIncrementer())
                .listener(listener())
                .flow(step1())
                .end()
                .build();
    }

    @Bean
    public Job anomalyJob() {
        return jobBuilderFactory.get("anomalyJob")
                .incrementer(new RunIdIncrementer())
                .listener(anomalyListener())
                .flow(step2())
                .end()
                .build();
    }
    @Bean
    public Step step1() {
        return stepBuilderFactory.get("step1")
                .<UserBean, DayByDayUsage> chunk(50)
                .reader(reader())
                .processor(processor())
                .writer(writer())
                .taskExecutor(taskExecutor())
                .throttleLimit(10)
                .allowStartIfComplete(true)
                .build();
    }
    // end::jobstep[]

    @Bean
    public Step step2() {
        return stepBuilderFactory.get("step2")
                .<UserBean, AnomalyBean> chunk(50)
                .reader(reader())
                .processor(anomalyProcessor())
                .writer(anomalyWriter())
                .taskExecutor(taskExecutor())
                .throttleLimit(10)
                .allowStartIfComplete(true)
                .build();
    }

    @Bean
    public TaskExecutor taskExecutor() {
        // TODO Auto-generated method stub
        ThreadPoolTaskExecutor taskExecutor = new ThreadPoolTaskExecutor();
        taskExecutor.setMaxPoolSize(10);
        taskExecutor.afterPropertiesSet();
        return taskExecutor;
    }

    @Bean
    public DataSource dataSource() {
        return new EmbeddedDatabaseBuilder()
                .setType(EmbeddedDatabaseType.HSQL)
                .addScript("classpath:/org/springframework/batch/core/schema-hsqldb.sql")
                .build();
    }
}

注意：我建议您使用Laravel Form Builders。所以你可以避免处理这些类型的问题。

如何在laravel 5中设置组合框选择值？

2 个答案: