Example app: Add strings demo

Author: insspb

example_app/app.py

@@ -4,6 +4,7 @@
 
 from example_app import views
 from example_app.models import db
+from example_app.strings_demo import strings_demo_view
 from flask_mongoengine.panels import mongo_command_logger
 
 app = flask.Flask("example_app")
@@ -40,6 +41,10 @@
 
 app.add_url_rule("/", view_func=views.index, methods=["GET", "POST"])
 app.add_url_rule("/pagination", view_func=views.pagination, methods=["GET", "POST"])
+app.add_url_rule("/strings_demo", view_func=strings_demo_view, methods=["GET", "POST"])
+app.add_url_rule(
+    "/strings_demo/<pk>/", view_func=strings_demo_view, methods=["GET", "POST"]
+)
 
 if __name__ == "__main__":
     app.run(host="0.0.0.0", port=8000)

example_app/strings_demo.py

@@ -0,0 +1,52 @@
+"""Strings and strings related fields demo model."""
+import re
+
+from flask import render_template, request
+
+from example_app.models import db
+from flask_mongoengine.wtf import fields as mongo_fields
+
+
+class StringsDemoModel(db.Document):
+    """Documentation example model."""
+
+    string_field = db.StringField()
+    regexp_string_field = db.StringField(
+        regex=re.compile(
+            r"^(https:\/\/)[\w.-]+(?:\.[\w\.-]+)+[\w\-\._~:/?#[\]@!\$&'\(\)\*\+,;=]+$"
+        )
+    )
+    sized_string_field = db.StringField(min_length=5)
+    tel_field = db.StringField(wtf_field_class=mongo_fields.MongoTelField)
+    password_field = db.StringField(
+        wtf_field_class=mongo_fields.MongoPasswordField,
+        required=True,
+        min_length=5,
+    )
+    email_field = db.EmailField()
+    url_field = db.URLField()
+
+
+StringsDemoForm = StringsDemoModel.to_wtf_form()
+
+
+def strings_demo_view(pk=None):
+    """Return all fields demonstration."""
+    form = StringsDemoForm()
+    obj = None
+    if pk:
+        obj = StringsDemoModel.objects.get(pk=pk)
+        form = StringsDemoForm(obj=obj)
+
+    if request.method == "POST" and form.validate_on_submit():
+        if pk:
+            form.populate_obj(obj)
+            obj.save()
+        else:
+            form.save()
+    page_num = int(request.args.get("page") or 1)
+    page = StringsDemoModel.objects.paginate(page=page_num, per_page=100)
+
+    return render_template(
+        "strings_demo.html", page=page, form=form, model=StringsDemoModel
+    )

example_app/templates/layout.html

@@ -8,6 +8,7 @@
   body {
     grid-template-columns: auto;
   }
+
   textarea:not([cols]) {
     width: auto;
   }
@@ -17,6 +18,7 @@
   <ul>
     <li><a href="{{ url_for("index") }}">Home</a></li>
     <li><a href="{{ url_for("pagination") }}">Pagination</a></li>
+    <li><a href="{{ url_for("strings_demo_view") }}">Strings demo</a></li>
   </ul>
 </nav>
 <div>

example_app/templates/strings_demo.html

@@ -0,0 +1,41 @@
+{% extends "layout.html" %}
+{% from "_formhelpers.html" import render_field %}
+{% from "_formhelpers.html" import render_navigation %}
+
+{% block body %}
+
+  <div>
+    <table>
+      <thead>
+      <tr>
+        {% for field in model._fields_ordered %}
+          <th>{{ model[field].name }}</th>
+        {% endfor %}
+        <th>Edit</th>
+      </tr>
+      </thead>
+      <tbody>
+      {% for page_object in page.items %}
+        <tr>
+          {% for field in page_object._fields_ordered %}
+            <td>{{ page_object[field] }}</td>
+          {% endfor %}
+          <td><a href="{{ url_for('strings_demo_view', pk=page_object.pk) }}">edit</a></td>
+        </tr>
+      {% endfor %}
+      </tbody>
+    </table>
+  </div>
+  <div>
+    {{ render_navigation(page, "strings_demo_view") }}
+  </div>
+  <div>
+    <form method="POST">
+      {% for field in form %}
+        {{ render_field(field, style='font-weight: bold') }}
+      {% endfor %}
+      <input type="submit" value="{% if form.instance %}Edit{% else %}Create{% endif %}">
+    </form>
+  </div>
+
+{% endblock %}

example_app/views.py

@@ -4,6 +4,7 @@
 from mongoengine.context_managers import switch_db
 
 from example_app import models
+from example_app.strings_demo import StringsDemoModel
 
 
 def generate_data():
@@ -47,6 +48,7 @@ def delete_data():
     """Clear database."""
     with switch_db(models.Todo, "default"):
         models.Todo.objects().delete()
+        StringsDemoModel.objects().delete()
     with switch_db(models.Todo, "secondary"):
         models.Todo.objects().delete()