bk2018/Fotoliste.html

{#await fotos}
{:then fotosFertig}
  {#each R.lodash.chunk(schueler, 25) as slice}
    <div class="page grid" orientation="portrait" size="A4">
      <div class="main">
        <h5>{slice[0].Klasse}</h5>
        Stand: {datum}
        <div class="grid">
          {#each slice as s}
            <div>
              <img src="data:image/jpg;base64,{fotosFertig[s.ID]}" alt="Foto" style="width: 120px">
              <br>
              {s.Name}, {s.Vorname}
            </div>
          {/each}
        </div>
      </div>
    </div>
  {/each}
{/await}

<style>
  @import 'css/main.css';
  .grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    grid-gap: 10px;
  }
</style>

<script>
  const SchuelerFoto = R.models.Schuelerfoto

  export default {
    computed: {
      fotos: async ({schueler, knexConfig}) => {
        SchuelerFoto.knex(R.knex(knexConfig))
        const schuelerfotos = await SchuelerFoto.query().whereIn('Schueler_ID', schueler.map(s => s.ID))
        return schuelerfotos.reduce(
          (f, element) => ({...f, [element.Schueler_ID]: Buffer.from(element.Foto, 'binary').toString('base64')}),
          {})
      }
    },
    data () { return { datum: new Date().toLocaleDateString('de', {day: '2-digit', month: '2-digit', year: 'numeric'}) } },
    helpers: { R },
  }
</script>