我尝试在Flask-Admin应用中扩展一对多字段以使用自定义Select2字段。该字段的javascript代码如下所示:
function format(data) {
if (!data.id) return data.text; // optgroup
return "<img class='flag' src='" + data.text + "'/>" + data.id;
}
function formatSelection(data) {
return data.id;
}
$("#da2").select2({
maximumSelectionSize: 3,
formatResult: format,
formatSelection: formatSelection,
escapeMarkup: function(m) { return m; }
});
我不确定在视图代码中需要更改的内容。我尝试过这样的事情:
class PostForm(wtf.Form):
title = fields.TextField('Title')
photos = fields.SelectField('Photo', widget=widgets.Select(multiple=True), id='da2')
class PostView(ModelView):
form = PostForm
def _feed_user_choices(self, mform):
photos = Photo.query.all()
mform.photos.choices = [(x.path, url_for('static',
filename=form.thumbgen_filename(x.path))) for x in photos]
return mform
def create_form(self):
form = super(Post2View, self).create_form()
return self._feed_user_choices(form)
但它不是ajax,并且在尝试解析列表时出错。
我觉得我很接近,但需要一些指导才能到达那里,感谢您的帮助。
答案 0 :(得分:-1)
你可能需要的是一个lambda
def _feed_user_choices(self, mform):
mform.photos.choices = [(x.path, url_for('static',filename=form.thumbgen_filename(x.path))) for x in lambda: Photo.query.all()]
return mform