To pass some context data to javascript code, you have to serialize it in a way it will be “understood” by javascript (namely JSON). You also need to mark it as safe using the safe Jinja filter, to prevent your data from being htmlescaped. You can achieve this by doing something like that: The view … Read more
One way around this limitation is to enable the “do” expression-statement extension and use an array instead of boolean: {% set exists = [] %} {% for i in range(5) %} {% if True %} {% do exists.append(1) %} {% endif %} {% endfor %} {% if exists %} <!– exists is true –> {% … Read more
you can use TEMPLATES_AUTO_RELOAD = True From http://flask.pocoo.org/docs/1.0/config/ Whether to check for modifications of the template source and reload it automatically. By default the value is None which means that Flask checks original file only in debug mode.
There are two ways to do it. The direct approach would be to simply call (and print) the strftime() method in your template, for example {{ car.date_of_manufacture.strftime(‘%Y-%m-%d’) }} Another, sightly better approach would be to define your own filter, e.g.: from flask import Flask import babel app = Flask(__name__) @app.template_filter() def format_datetime(value, format=”medium”): if format … Read more
The solution in this answer has been incorporated into ruamel.yaml using a plugin mechanism. At the bottom of this post there are quick-and-dirty instructions on how to use that. There are three aspects in updating a YAML file that contains jinja2 “code”: making the jinja2 code acceptable to the YAML parser making sure the acceptable … Read more
Your url_list should look like this: url_list = [{‘target’: ‘http://10.58.48.103:5000/’, ‘clicks’: ‘1’}, {‘target’: ‘http://slash.org’, ‘clicks’: ‘4’}, {‘target’: ‘http://10.58.48.58:5000/’, ‘clicks’: ‘1’}, {‘target’: ‘http://de.com/a’, ‘clicks’: ‘0’}] Then using: <li>{{ item[“target”] }}</li> in your template will work. Edit 1: Your template think you’re passing a list in, so are you sure you’re passing in your original dict and … Read more
You have two choices here — the first is the way you did it — simply add the appropriate markup into a template (or a block if you want to be able to override it in templates which extend your first template.) The second way is to use Jinja2’s include function: {% block javascript %} … Read more
To get first item of the list: – debug: msg: “First item: {{ ansible_processor[0] }}” Or: – debug: msg: “First item: {{ ansible_processor | first }}”
You can use render_template_string: >>> from flask import render_template_string >>> render_template_string(‘hello {{ what }}’, what=”world”) ‘hello world’
Technically, because context is not passed as a named dictionary, a little work is required to generate a list of the context variables from inside a template. It is possible though. Define a Jinja context function to return the jinja2.Context object, which is essentially a dictionary of the global variables/functions Make that function available in … Read more