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Merge pull request #1520 from zevav/patch-2

fixed some punctuation, fixed a few errors, in service of readability
pull/1539/head
Markus Unterwaditzer 9 years ago
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  1. 24
      docs/patterns/wtforms.rst

24
docs/patterns/wtforms.rst

@ -1,7 +1,7 @@
Form Validation with WTForms
============================
When you have to work with form data submitted by a browser view code
When you have to work with form data submitted by a browser view, code
quickly becomes very hard to read. There are libraries out there designed
to make this process easier to manage. One of them is `WTForms`_ which we
will handle here. If you find yourself in the situation of having many
@ -12,10 +12,10 @@ first. I recommend breaking up the application into multiple modules
(:ref:`larger-applications`) for that and adding a separate module for the
forms.
.. admonition:: Getting most of WTForms with an Extension
.. admonition:: Getting the most out of WTForms with an Extension
The `Flask-WTF`_ extension expands on this pattern and adds a few
handful little helpers that make working with forms and Flask more
The `Flask-WTF`_ extension expands on this pattern and adds a
few little helpers that make working with forms and Flask more
fun. You can get it from `PyPI
<https://pypi.python.org/pypi/Flask-WTF>`_.
@ -54,8 +54,8 @@ In the view function, the usage of this form looks like this::
return redirect(url_for('login'))
return render_template('register.html', form=form)
Notice that we are implying that the view is using SQLAlchemy here
(:ref:`sqlalchemy-pattern`) but this is no requirement of course. Adapt
Notice we're implying that the view is using SQLAlchemy here
(:ref:`sqlalchemy-pattern`), but that's not a requirement, of course. Adapt
the code as necessary.
Things to remember:
@ -64,14 +64,14 @@ Things to remember:
the data is submitted via the HTTP ``POST`` method and
:attr:`~flask.request.args` if the data is submitted as ``GET``.
2. to validate the data, call the :func:`~wtforms.form.Form.validate`
method which will return ``True`` if the data validates, ``False``
method, which will return ``True`` if the data validates, ``False``
otherwise.
3. to access individual values from the form, access `form.<NAME>.data`.
Forms in Templates
------------------
Now to the template side. When you pass the form to the templates you can
Now to the template side. When you pass the form to the templates, you can
easily render them there. Look at the following example template to see
how easy this is. WTForms does half the form generation for us already.
To make it even nicer, we can write a macro that renders a field with
@ -95,14 +95,14 @@ Here's an example :file:`_formhelpers.html` template with such a macro:
{% endmacro %}
This macro accepts a couple of keyword arguments that are forwarded to
WTForm's field function that renders the field for us. The keyword
arguments will be inserted as HTML attributes. So for example you can
WTForm's field function, which renders the field for us. The keyword
arguments will be inserted as HTML attributes. So, for example, you can
call ``render_field(form.username, class='username')`` to add a class to
the input element. Note that WTForms returns standard Python unicode
strings, so we have to tell Jinja2 that this data is already HTML escaped
strings, so we have to tell Jinja2 that this data is already HTML-escaped
with the ``|safe`` filter.
Here the :file:`register.html` template for the function we used above which
Here is the :file:`register.html` template for the function we used above, which
takes advantage of the :file:`_formhelpers.html` template:
.. sourcecode:: html+jinja

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