discourse/app/assets/javascripts/admin/addon/components/site-settings/string.hbs

{{#if this.setting.textarea}}
  <Textarea @value={{this.value}} class="input-setting-textarea" />
{{else if this.setting.json_schema}}
  <DButton
    @action={{fn (mut this.showJsonEditorModal) true}}
    @icon="pencil-alt"
    @label="admin.site_settings.json_schema.edit"
  />
{{else if this.isSecret}}
  <Input @type="password" @value={{this.value}} class="input-setting-string" />
{{else}}
  <TextField @value={{this.value}} @classNames="input-setting-string" />
{{/if}}

<SettingValidationMessage @message={{this.validationMessage}} />
<div class="desc">{{html-safe this.setting.description}}</div>

{{#if this.showJsonEditorModal}}
  <Modal::JsonSchemaEditor
    @updateValue={{fn (mut this.value)}}
    @value={{this.value}}
    @settingName={{this.setting.setting}}
    @jsonSchema={{this.setting.json_schema}}
    @closeModal={{fn (mut this.showJsonEditorModal) false}}
  />
{{/if}}