jinja2

问题 The list in the left column of ontariocourts311.ca, along with the body of the page under the image intermittently fail to display (which is 'fixed' by refreshing the page). I'm a Noob, and have tried various versions of the return statement without success. Error: 2019-06-05 16:39:26,765: Exception on / [GET] Traceback (most recent call last): File "flask/app.py", line 2311, in wsgi_app response = self.full_dispatch_request() File "flask/app.py", line 1834, in full_dispatch_request rv = self

问题 how do i read an array from javascript to jinja template: <script type="text/javascript"> var x =0; function ActionDeterminator() { x=x+1; document.getElementById("me").innerHTML=x; var $label = $('input[id = optionD]').next(); $label.text(x); alert('{{option_D[0]}}'); return true; } </script>> when i use the code above.. it works pretty well.but when i want to put the variable x like this: <script type="text/javascript"> var x =0; function ActionDeterminator() { x=x+1; document

问题 I pass a JSON-encoded dictionary from Python 3 to Jinja2 template and assign it to a JavaScript variable. My template is as follows <script> var a = {{ json_dict }}; // is rendered as `var a = {"key": "value"};` </script> This works as expected, but I'd like to minify JavaScript code containing Jinja2 expressions using Closure Compiler, which currently throws predictable errors like JSC_PARSE_ERROR: Parse error. '}' expected at line 2 character 9 var a = {{ json_dict }}; What are my options?

问题 I have app that can make friends I am able to count friends and display it in profile.html But when I try to print the name of friends It doesn't work(It use flask-sqlalchemy) model.py: friends = db.Table('friends', db.Column('user_id', db.Integer, db.ForeignKey('user.id')), db.Column('friend_id', db.Integer, db.ForeignKey('user.id')) ) class User(db.Model): id = db.Column(db.Integer, primary_key = True) name = db.Column(db.String(50), index=True, unique= True) email = db.Column(db.String(50)

问题 This is following on from this question: SQLalchemy/wtforms update issue - 400 bad request I have a flask framework Issue When I submit the form the flash message comes up saying prediction added although when I query the db nothing has changed?? Can anyone spot where I'm going wrong? What am I trying to achieve Users are able to view their predictions making changes to current predictions. If there are no new predictions then they can submit new predictions. views # Predictor - User makes

问题 The following code selects all 3 of the options (though only perhaps one is desirable). <select id="example-getting-started" name="test" multiple="multiple"> <option value="cheese" selected="NO">Cheese</option> <option value="tomatoes" selected>Tomatoes</option> <option value="mozarella" selected="maybe">Mozzarella</option> <option value="mushrooms">Mushrooms</option> <option value="pepperoni">Pepperoni</option> <option value="onions">Onions</option> </select> It's not hard to convert this to

问题 I'm trying to write a simple jinja2 extension that'll render a <meta> tag in the page with some property and content attr. It looks something like this: from jinja2 import nodes from jinja2.ext import Extension class MetaExtension(Extension): """ returns a meta tag of key, value >> env = jinja2.Environment(extensions=[MetaExtension]) >> env.from_string('{% meta "key", "value" %}').render() u'<meta property="keyword" content="value" />' """ # we'll use it in the template with tags = set(['meta

问题 I am setting a fact in Ansible and that variable has a value with hyphens, like this " dos-e1-south-209334567829102380 ". i want to split , so i only get "dos-e1-south" Here is the play - set_fact: config: "{{ asg.results|json_query('[*].launch_configuration_name') }}" - debug: var: config 回答1: another option is ansibles regular expression filter, you find here: https://docs.ansible.com/ansible/latest/user_guide/playbooks_filters.html#regular-expression-filters vars: var: dos-e1-south

问题 I want to convert this variable: default_attr: attr1 : - "1" nexatt : - "b" ... to "attr=1,nextattr=b,..." (i.e.comma separated string) using Jinja template. Is there a possible way to do this? - name: Reading the attributes set_fact: app_attributes: | {% set attributes = " " -%} {% for key in default_attr.keys() -%} {% for value in default_attr[key] -%} {% attributes: "{{ attributes }} + [{'key=value'}]" -%} {%- endfor %} {%- endfor %} {{ attributes }} The error I get is shown below: fatal:

问题 <a href="{{ url('affiliate', affiliate=object.slug) }}">{{ object.name }} </a> Cause an error: reverse() got an unexpected keyword argument 'affiliate' 回答1: As your url() function seem to be an alias to the Django's reverse() , the function signature is different from the regular template tag. So just use the reverse() syntax: <a href="{{ url('affiliate', args=[object.slug]) }}">{{ object.name }}</a> 来源： https://stackoverflow.com/questions/34712469/jinja2-url-generation