Can model views in Flask-Admin hyperlink to other model views?

Question

Suppose we have a model, Foo, that references another model, User - and Flask-Admin views for both.

On the Foo admin view page (eg something like the first screenshot at http://mrjoes.github.io/2012/08/27/flask-admin-102.html ), I would like the entries in the User column to be link to the corresponding User model view.

Do I need to modify one of Flask-Admin's templates to achieve this?

(This is possible in the Django admin interface by simply outputting HTML for a given field and setting allow_tags (ref) True to bypass Django's HTML tag filter)

Answer 1

Some example code based on Joes' answer:

class MyFooView(ModelView):

    def _user_formatter(view, context, model, name):
        return Markup(
            u"<a href='%s'>%s</a>" % (
                url_for('user.edit_view', id=model.user.id),
                model.user
            )
        ) if model.user else u""

    column_formatters = {
        'user': _user_formatter
    }

Answer 2

Use column_formatters for this: https://flask-admin.readthedocs.org/en/latest/api/mod_model/#flask.ext.admin.model.BaseModelView.column_formatters

Idea is pretty simple: for a field that you want to display as hyperlink, either generate a HTML string and wrap it with Jinja2 Markup class (so it won't be escaped in templates) or use macro helper: https://github.com/mrjoes/flask-admin/blob/master/flask_admin/model/template.py

Macro helper allows you to use custom Jinja2 macros in overridden template, which moves presentational logic to templates.

As far as URL is concerned, all you need is to find endpoint name generated (or provided) for the User model and do url_for('userview.edit_view', id=model.id) to generate the link.

Answer 3

@wodow的额外信息，请注意如果你使用pymongo作为后端， model.user是错误的，因为pymongo中的模型是一个dict类型，你可以使用model['name']替换它

Answer 4

Adding this code to each of your models that have referenced by other models and flask-admin and jinja will take care of the name you want to display on the screen, just replace that with whatever you prefer:

def __unicode__(self):
    return self.name  # or self.id or whatever you prefer

for example:

class Role(db.Document, RoleMixin):
    name = db.StringField(max_length=80, unique=True)
    description = db.StringField(max_length=255)

    def __unicode__(self):
        return self.name

class MasterUser(db.Document, UserMixin):
    email = db.StringField(max_length=255)
    password = db.StringField(max_length=255)
    active = db.BooleanField(default=True)
    confirmed_at = db.DateTimeField()
    roles = db.ListField(db.ReferenceField(Role), default=[])