Rendering is changing data into something <variable> -------> into "value".
Parsing takes raw data or input and converts it a data structure, or structures that can be analyzed.
Jinja2 - 101 - Intro to Jinja2 template building
| Widget Connector |
|---|
| url | https://vimeo.com/120005103 |
|---|
|
...
|
|
|---|
|
| Code Block |
|---|
| With Python: ( use extensively by Ansible)
>>> from jinja2 import Template
>>> template = Template('Hello {{ name }}!')
>>> template.render(name='John Doe')
'Hello John Doe!' |
|
|
| Code Block |
|---|
| title | render jinja2 : option 1 |
|---|
| from jinja2 import Template
def render_jinja2():
with open(r"C:\Users\jkriker\Documents\GitHub\JAUT_Training\Basic-python-with-Juniper\Napalm\config_unit.j2") as file_:
template = Template(file_.read())
print(template.render(unit_id='5', vlan_id=5, subnet="0.5"))
render_jinja2(template_name, list_variables)
|
Example using it: https://github.com/dahai0013/Basic-python-with-Juniper/tree/master/Napalm
|
|
| Code Block |
|---|
| title | option 2 |
|---|
| collapse | true |
|---|
| import jinja2
def render_j2():
templateLoader = jinja2.FileSystemLoader(searchpath = r"C:\Users\jkriker\Documents\GitHub\JAUT_Training\Basic-python-with-Juniper\Napalm" )
templateEnv = jinja2.Environment(loader=templateLoader)
TEMPLATE_FILE = "config_unit.j2"
template = templateEnv.get_template(TEMPLATE_FILE)
outputText = template.render(unit_id=5, vlan_id=5, subnet="0.5")
print(outputText)
|
|
|
| Code Block |
|---|
| title | Option 3 |
|---|
| collapse | true |
|---|
| from jinja2 import Environment, FileSystemLoader
def render_config(config_template):
file_loader = FileSystemLoader(r"C:\Users\jkriker\Documents\GitHub\JAUT_Training\Basic-python-with-Juniper\Napalm")
env = Environment(loader=file_loader)
template = env.get_template("config_unit.j2")
output = template.render(unit_id="5", vlan_id="5", subnet="0.5")
print(output) |
|
|
|
|
|
|
|
...