[IMP] website_slides: add is_preview management in backend/frontend

Task #1902304

Purpose
=======

The 'is_preview' field implied some functional behavior but it was not
manageable from back-end nor front-end.

It can now be configured on the slide upload form (front-end view) and on
the slide form (back-end view).

closes odoo/odoo#31073

addons/website_slides/controllers/main.py

@@ -313,6 +313,8 @@ class WebsiteSlides(http.Controller):
             else:
                 values['category_id'] = post['category_id'][0]
 
+        values['is_preview'] = post.get('is_preview') == 'true'
+
         # handle exception during creation of slide and sent error notification to the client
         # otherwise client slide create dialog box continue processing even server fail to create a slide
         try:

addons/website_slides/static/src/js/slides_upload.js

@@ -128,6 +128,7 @@ var SlideUploadDialog = Dialog.extend({
             'url': this._formGetFieldValue('url'),
             'description': this._formGetFieldValue('description'),
             'index_content': this._formGetFieldValue('index_content'),
+            'is_preview': this.$('#is_preview').is(':checked'),
             'website_published': forcePublished,
         }, this._getSelect2DropdownValues()); // add tags and category
 

addons/website_slides/static/src/xml/website_slides_upload.xml

@@ -42,23 +42,29 @@
     -->
     <t t-name="website.slide.upload.modal.common">
         <div class="form-group row">
-            <label for="name" class="col-form-label col-md-2">Title</label>
-            <div class="col-md-10">
+            <label for="name" class="col-form-label col-md-3">Title</label>
+            <div class="col-md-9">
                 <input id="name" name="name" placeholder="Title" class="form-control" required="required"/>
             </div>
         </div>
         <div class="form-group row">
-            <label for="category_id" class="col-form-label col-md-2">Category</label>
-            <div class="controls col-md-10">
+            <label for="category_id" class="col-form-label col-md-3">Category</label>
+            <div class="controls col-md-9">
                 <input class="form-control" id="category_id"/>
             </div>
         </div>
         <div class="form-group row">
-            <label for="tag_ids" class="col-form-label col-md-2">Tags</label>
-            <div class="controls col-md-10">
+            <label for="tag_ids" class="col-form-label col-md-3">Tags</label>
+            <div class="controls col-md-9">
                 <input id="tag_ids" name="tag_ids" type="hidden"/>
             </div>
         </div>
+        <div class="form-group row">
+            <label for="is_preview" class="col-form-label col-md-3">Always visible</label>
+            <div class="controls col-md-9 mt8">
+                <input id="is_preview" name="is_preview" type="checkbox"/>
+            </div>
+        </div>
     </t>
 
     <!--

addons/website_slides/views/slide_slide_views.xml

@@ -78,6 +78,7 @@
                             <page string="Website">
                                 <group>
                                     <group>
+                                        <field name="is_preview"/>
                                         <field name="download_security"/>
                                         <field name="date_published"/>
                                         <field name="likes"/>