vayn/flask.py

## flask.py
from flask import Flask
from flask.ext.sqlalchemy import SQLAlchemy
from flask.ext.wtf import Form
from flask.ext.babel import gettext
from wtforms import SelectField, TelField, TextField, FormField, Fieldlist, SubmitField
from wtforms.validators import Optional, Required

app = Flask(__name__)
db = SQLAlchemy(app)

class User(db.Model):
    id = db.Column(db.Integer(), primary_key=True)
    username = db.Column(db.String(50))
    phone = db.relationship(lambda: PhoneNumber)

class PhoneNumber(db.Model):
    id = db.Column(db.Integer(), primary_key=True)
    user_id = db.Column(db.Integer(), db.ForeignKey(User.id))
    phonetype = db.Column(db.String(10))
    number = db.Column(db.String(20))
    ext = db.Column(db.String(10))

class PhoneNumberForm(Form):
    phonetype = SelectField(gettext("Type"), choices=[(c, c) for c in ['Mobile', 'Home', 'Work', 'Fax', 'Other']])
    number = TelField(gettext("Number"), validators=[Required()])
    ext = TextField(gettext("Notes"), validators=[Optional()])
    def __init__(self, csrf_enabled=False, *args, **kwargs):
        super(PhoneNumberForm, self).__init__(csrf_enabled=False, *args, **kwargs)

class ModelFieldList(FieldList):
    def __init__(self, *args, **kwargs):
        self.model = kwargs.pop("model", None)
        super(ModelFieldList, self).__init__(*args, **kwargs)
        if not self.model:
            raise ValueError("ModelFieldList requires model to be set")

    def populate_obj(self, obj, name):
        while len(getattr(obj, name)) < len(self.entries):
            newModel = self.model()
            db.session.add(newModel)
            getattr(obj, name).append(newModel)
        while len(getattr(obj, name)) > len(self.entries):
            db.session.delete(getattr(obj, name).pop())
        super(ModelFieldList, self).populate_obj(obj, name)

class UserForm(Form):
    username = TextField(gettext("Username"), validators=[Required()])
    phone = ModelFieldList(FormField(PhoneNumberForm), model=PhoneNumber)
    submit = SubmitField(gettext("Submit"))

@app.route("/")
def index()
    user = User.query.first()
    form = UserForm(obj = user)
    form.phone.min_entries=3
    if form.validate_on_submit():
        form.populate_obj(user)
        db.session.commit()
    return render_template("page.html", form = form)

if __name__ == '__main__':
    db.drop_all()
    db.create_all()
    db.session.add(User(username="Frank"))
    db.session.commit()
    app.run(debug=True)

## page.html
<!doctype html>
<html>
    <head>
      <title>User Form Demo</title>
    </head>
    <body>
        {{ form.username.label }}: {{ form.username }}
        <div data-toggle="fieldset" id="phone-fieldset">
            {{ form.phone.label }} <button type="button" data-toggle="fieldset-add-row" data-target="#phone-fieldset">+</button>
            <table>
                <tr>
                    <th>Type</th>
                    <th>Number</th>
                    <th>Extension</th>
                    <th></th>
                </tr>
                {% for phone in form.phone %}
                <tr data-toggle="fieldset-entry">
                    <td>{{ phone.phonetype }}</td>
                    <td>{{ phone.number }}</td>
                    <td>{{ phone.ext }}</td>
                    <td><button type="button" data-toggle="fieldset-remove-row" id="phone-{{loop.index0}}-remove">-</button></td>
                </tr>
                {% endfor %}
            </table>
        </div>
        {{ form.submit }}
        <script src="{{ url_for("static", filename="js/jquery-1.10.2.min.js") }}"></script>
        <script src="{{ url_for("static", filename="js/page.js") }}"></script>
    </body>
</html>

## page.js
$(function() {
    $("div[data-toggle=fieldset]").each(function() {
        var $this = $(this);

            //Add new entry
        $this.find("button[data-toggle=fieldset-add-row]").click(function() {
            var target = $($(this).data("target"))
            console.log(target);
            var oldrow = target.find("div[data-toggle=fieldset-entry]:last");
            var row = oldrow.clone(true, true);
            console.log(row.find(":input")[0]);
            var elem_id = row.find(":input")[0].id;
            var elem_num = parseInt(elem_id.replace(/.*-(\d{1,4})-.*/m, '$1')) + 1;
            row.attr('data-id', elem_num);
            row.find(":input").each(function() {
                console.log(this);
                var id = $(this).attr('id').replace('-' + (elem_num - 1) + '-', '-' + (elem_num) + '-');
                $(this).attr('name', id).attr('id', id).val('').removeAttr("checked");
            });
            oldrow.after(row);
        }); //End add new entry

                //Remove row
        $this.find("button[data-toggle=fieldset-remove-row]").click(function() {
            if($this.find("div[data-toggle=fieldset-entry]").length > 1) {
                var thisRow = $(this).closest("div[data-toggle=fieldset-entry]");
                thisRow.remove();
            }
        }); //End remove row
    });
});
	from flask import Flask
	from flask.ext.sqlalchemy import SQLAlchemy
	from flask.ext.wtf import Form
	from flask.ext.babel import gettext
	from wtforms import SelectField, TelField, TextField, FormField, Fieldlist, SubmitField
	from wtforms.validators import Optional, Required

	app = Flask(__name__)
	db = SQLAlchemy(app)

	class User(db.Model):
	id = db.Column(db.Integer(), primary_key=True)
	username = db.Column(db.String(50))
	phone = db.relationship(lambda: PhoneNumber)

	class PhoneNumber(db.Model):
	id = db.Column(db.Integer(), primary_key=True)
	user_id = db.Column(db.Integer(), db.ForeignKey(User.id))
	phonetype = db.Column(db.String(10))
	number = db.Column(db.String(20))
	ext = db.Column(db.String(10))

	class PhoneNumberForm(Form):
	phonetype = SelectField(gettext("Type"), choices=[(c, c) for c in ['Mobile', 'Home', 'Work', 'Fax', 'Other']])
	number = TelField(gettext("Number"), validators=[Required()])
	ext = TextField(gettext("Notes"), validators=[Optional()])
	def __init__(self, csrf_enabled=False, args, *kwargs):
	super(PhoneNumberForm, self).__init__(csrf_enabled=False, args, *kwargs)

	class ModelFieldList(FieldList):
	def __init__(self, args, *kwargs):
	self.model = kwargs.pop("model", None)
	super(ModelFieldList, self).__init__(args, *kwargs)
	if not self.model:
	raise ValueError("ModelFieldList requires model to be set")

	def populate_obj(self, obj, name):
	while len(getattr(obj, name)) < len(self.entries):
	newModel = self.model()
	db.session.add(newModel)
	getattr(obj, name).append(newModel)
	while len(getattr(obj, name)) > len(self.entries):
	db.session.delete(getattr(obj, name).pop())
	super(ModelFieldList, self).populate_obj(obj, name)

	class UserForm(Form):
	username = TextField(gettext("Username"), validators=[Required()])
	phone = ModelFieldList(FormField(PhoneNumberForm), model=PhoneNumber)
	submit = SubmitField(gettext("Submit"))

	@app.route("/")
	def index()
	user = User.query.first()
	form = UserForm(obj = user)
	form.phone.min_entries=3
	if form.validate_on_submit():
	form.populate_obj(user)
	db.session.commit()
	return render_template("page.html", form = form)

	if __name__ == '__main__':
	db.drop_all()
	db.create_all()
	db.session.add(User(username="Frank"))
	db.session.commit()
	app.run(debug=True)
	<!doctype html>
	<html>
	<head>
	<title>User Form Demo</title>
	</head>
	<body>
	{{ form.username.label }}: {{ form.username }}
	<div data-toggle="fieldset" id="phone-fieldset">
	{{ form.phone.label }} <button type="button" data-toggle="fieldset-add-row" data-target="#phone-fieldset">+</button>
	<table>
	<tr>
	<th>Type</th>
	<th>Number</th>
	<th>Extension</th>
	<th></th>
	</tr>
	{% for phone in form.phone %}
	<tr data-toggle="fieldset-entry">
	<td>{{ phone.phonetype }}</td>
	<td>{{ phone.number }}</td>
	<td>{{ phone.ext }}</td>
	<td><button type="button" data-toggle="fieldset-remove-row" id="phone-{{loop.index0}}-remove">-</button></td>
	</tr>
	{% endfor %}
	</table>
	</div>
	{{ form.submit }}
	<script src="{{ url_for("static", filename="js/jquery-1.10.2.min.js") }}"></script>
	<script src="{{ url_for("static", filename="js/page.js") }}"></script>
	</body>
	</html>
	$(function() {
	$("div[data-toggle=fieldset]").each(function() {
	var $this = $(this);

	//Add new entry
	$this.find("button[data-toggle=fieldset-add-row]").click(function() {
	var target = $($(this).data("target"))
	console.log(target);
	var oldrow = target.find("div[data-toggle=fieldset-entry]:last");
	var row = oldrow.clone(true, true);
	console.log(row.find(":input")[0]);
	var elem_id = row.find(":input")[0].id;
	var elem_num = parseInt(elem_id.replace(/.-(\d{1,4})-./m, '$1')) + 1;
	row.attr('data-id', elem_num);
	row.find(":input").each(function() {
	console.log(this);
	var id = $(this).attr('id').replace('-' + (elem_num - 1) + '-', '-' + (elem_num) + '-');
	$(this).attr('name', id).attr('id', id).val('').removeAttr("checked");
	});
	oldrow.after(row);
	}); //End add new entry

	//Remove row
	$this.find("button[data-toggle=fieldset-remove-row]").click(function() {
	if($this.find("div[data-toggle=fieldset-entry]").length > 1) {
	var thisRow = $(this).closest("div[data-toggle=fieldset-entry]");
	thisRow.remove();
	}
	}); //End remove row
	});
	});