discourse/app/assets/javascripts/admin/addon/templates/modal/admin-silence-user.hbs

<DModalBody @title="admin.user.silence_modal_title">
  <ConditionalLoadingSpinner @condition={{this.loadingUser}}>

    {{#if this.errorMessage}}
      <div class="alert alert-error">{{this.errorMessage}}</div>
    {{/if}}

    <AdminPenaltyHistory @user={{this.user}} />

    <div class="until-controls">
      <label>
        <FutureDateInput @class="silence-until" @label="admin.user.silence_duration" @clearable={{false}} @input={{this.silenceUntil}} @onChangeInput={{action (mut this.silenceUntil)}} />
      </label>
    </div>

    <SilenceDetails @reason={{this.reason}} @message={{this.message}} />
    {{#if this.postId}}
      <PenaltyPostAction @postId={{this.postId}} @postAction={{this.postAction}} @postEdit={{this.postEdit}} />
    {{/if}}

  </ConditionalLoadingSpinner>

</DModalBody>

<div class="modal-footer">
  <DButton @class="btn-danger perform-silence" @action={{action "silence"}} @disabled={{this.submitDisabled}} @icon="microphone-slash" @label="admin.user.silence" />
  <DModalCancel @close={{route-action "closeModal"}} />
  <ConditionalLoadingSpinner @condition={{this.loading}} @size="small" />
</div>