问题
I have problem with saving form (wtf) to (sqlalchemy) db ,form is rendering ,but after submit nothing happens ...
e.g. :
127.0.0.1 - - [30/Dec/2013 10:30:24] "POST /add/ HTTP/1.1" 200 -
I was trying to save without validators
e.g. :
name = TextField('Task Name')
and i was trying to save form other way :
if request.method == 'POST' and form.validate():
new_task = Tasks(
form.name.data,
form.due_date.data,
form.priority.data,
form.posted_date.data,
session['user_id'],
form.category.data,
form.super_category.data,
form.description.data
)
db.session.add(new_task)
db.session.commit()
And code below :
models :
# -*- coding: utf-8; -*-
from app import db
import datetime
class Tasks(db.Model):
__tablename__ = "tasks"
task_id = db.Column(db.Integer,primary_key=True)
name = db.Column(db.String(255),nullable=False)
description = db.Column(db.Text,nullable=False)
priority = db.Column(db.Integer,nullable=False)
posted_date = db.Column(db.DATE,nullable=False)
status = db.Column(db.Integer,default=1,nullable=False)
category = db.Column(db.String(255),nullable=False)
super_category = db.Column(db.String(255),nullable=False)
user_id = db.Column(db.Integer,db.ForeignKey('users.id'))
def __init__(self,name,due_date,priority,posted_date,users_id,category,super_category,description):
self.name = name
self.due_date = due_date
self.priority = priority
self.posted_date = posted_date
self.user_id = users_id
self.category = category
self.super_category = super_category
self.description = description
forms :
# -*- coding: utf-8; -*-
from wtforms import Form,validators
from wtforms import TextField,DateField,IntegerField,SelectField,TextAreaField
from wtforms.validators import required,Email,EqualTo,Length
from wtforms import PasswordField
class AddTask(Form):
name = TextField('Task Name',validators=[required()])
due_date = DateField('Date Due (mm/dd/yyyy)',validators=[required()],format='%m/%d/%Y')
priority = SelectField('Priority',validators=[required()],choices=[('1','1'),('2','2'),('3','3'),('4','4'),('5','5')])
description = TextAreaField('Description',validators=[required()])
posted_date = DateField('Posted Date (mm/dd/yyyy)',validators=[required()],format='%m/%d/%Y')
category = SelectField('Category',validators=[required()],choices=[('foobar','foobar'),('foobar2','foobar2')])
super_category = SelectField('Super_category',validators=[required()],choices=[('foobar3','foobar3'),('foobar4','foobar4'),('foobar5','foobar5')])
user_id = SelectField('User',validators=[required()],choices=[('1','1'),('2','2'),('3','3'),('4','4'),('5','5')])
views :
@app.route('/add/',methods=['GET','POST'])
@login_required
def new_task():
form = AddTask(request.form,csrf_enabled=True)
if request == 'POST' and form.validate():
form_tasks = Tasks()
form.populate_obj(form_tasks)
db.session.add(form_tasks)
db.session.commit()
return redirect(url_for('tasks'))
return render_template('form.html',form=form)
form.html :
{% extends "layout2.html" %}
{% from 'common.html' import edit_field %}
{% block content %}
<div class='edit well offset 2 span8'>
<form method='post' class="form-horizontal">
<legend> Add task </legend>
{{ edit_field(form.name , class="span3") }}
{{ edit_field(form.due_date , class="span3", type="datetime") }}
{{ edit_field(form.priority, class="span3") }}
{{ edit_field(form.description, rows="5" ,class="span3", placeholder="foobar" ) }}
{{ edit_field(form.posted_date, class="span3",type="datetime") }}
{{ edit_field(form.category, class="span3") }}
{{ edit_field(form.super_category, class="span3") }}
<div class="form-actions">
<button type="submit" class="btn">SAVE</button>
</div>
</form>
</div>
{% endblock %}
common.html :
{% macro edit_field(field,catch_kwargs=true) %}
<div class="control-group{% if field.errors %} error {% endif %}">
{{ field.label(class="control-label") }}
<div class="controls">
{{ field(**kwargs) }}
{% for error in field.errors %}
<span class="help-inline">{{error}}</span>
{% endfor %}
</div>
</div>
{% endmacro %}
回答1:
You need to put anti-forgery token somewhere within the form. Add the following in your template file, inside the form tag:
{{ form.hidden_tag() }}
This renders hidden field similar to
<input id="csrf_token" name="csrf_token" type="hidden" value="xxxxxx">
Putting it together with your form.html file we are getting:
{% extends "layout2.html" %}
{% from 'common.html' import edit_field %}
{% block content %}
<div class='edit well offset 2 span8'>
<form method='post' class="form-horizontal">
{{ form.hidden_tag() }}
<legend>Add task</legend>
{{ edit_field(form.name , class="span3") }}
{{ edit_field(form.due_date , class="span3", type="datetime") }}
{{ edit_field(form.priority, class="span3") }}
{{ edit_field(form.description, rows="5" ,class="span3"
, placeholder="foobar" ) }}
{{ edit_field(form.posted_date, class="span3",type="datetime") }}
{{ edit_field(form.category, class="span3") }}
{{ edit_field(form.super_category, class="span3") }}
<div class="form-actions">
<button type="submit" class="btn">SAVE</button>
</div>
</form>
</div>
{% endblock %}
回答2:
The solution is :
add hidden_tag() - Thanks vittore !
import "form" from flask_wtf not from wtforms .
remove "request.form" from new_task()
Now code looks like this and it's working ! - thanks everyone for help .
@app.route('/add/',methods=['GET','POST'])
@login_required
def new_task():
form = AddTask(csrf_enabled=True)
if form.validate_on_submit():
new_task = Tasks(
form.name.data,
form.due_date.data,
form.priority.data,
form.posted_date.data,
session['user_id'],
form.category.data,
form.super_category.data,
form.description.data
)
db.session.add(new_task)
db.session.commit()
return redirect(url_for('tasks'))
else:
flash_errors(form)
return render_template('form.html',form=form)
回答3:
It looks like your form.validate() is returning False, try testing without validate check and see what happens, also im not seeing csrf token being passed anywhere.
来源：https://stackoverflow.com/questions/20837209/flask-wtform-save-form-to-db