I just looked into "Nop.Web/Administration/Views/Blog/_CreateOrUpdate.cshtml" and there is no option for blog tags in the view.
I just confirmed by looking here: https://github.com/nopSolutions/nopCommerce/blob/develop/src/Presentation/Nop.Web/Administration/Views/Blog/_CreateOrUpdate.cshtml
Current code:
<div class="form-group">
<div class="col-md-3">
@Html.NopLabelFor(model => model.BodyOverview)
</div>
<div class="col-md-9">
@Html.NopTextAreaFor(model => model.BodyOverview)
@Html.ValidationMessageFor(model => model.BodyOverview)
</div>
</div>
<div class="form-group">
<div class="col-md-3">
@Html.NopLabelFor(model => model.AllowComments)
</div>
<div class="col-md-9">
@Html.NopEditorFor(model => model.AllowComments)
@Html.ValidationMessageFor(model => model.AllowComments)
</div>
</div>
Solution (adding tags):
<div class="form-group">
<div class="col-md-3">
@Html.NopLabelFor(model => model.Tags):
</div>
<div class="col-md-9">
@Html.NopEditorFor(model => model.Tags)
@Html.ValidationMessageFor(model => model.Tags)
</div>
</div>
With solution, the view should be like this:
<div class="form-group">
<div class="col-md-3">
@Html.NopLabelFor(model => model.BodyOverview)
</div>
<div class="col-md-9">
@Html.NopTextAreaFor(model => model.BodyOverview)
@Html.ValidationMessageFor(model => model.BodyOverview)
</div>
</div>
<div class="form-group">
<div class="col-md-3">
@Html.NopLabelFor(model => model.Tags):
</div>
<div class="col-md-9">
@Html.NopEditorFor(model => model.Tags)
@Html.ValidationMessageFor(model => model.Tags)
</div>
</div>
<div class="form-group">
<div class="col-md-3">
@Html.NopLabelFor(model => model.AllowComments)
</div>
<div class="col-md-9">
@Html.NopEditorFor(model => model.AllowComments)
@Html.ValidationMessageFor(model => model.AllowComments)
</div>
</div>