> ## Documentation Index
> Fetch the complete documentation index at: https://docs.dify.ai/llms.txt
> Use this file to discover all available pages before exploring further.
# Template
> Transform and format data using Jinja2 templating
The Template node transforms and formats data from multiple sources into structured text using Jinja2 templating. Use it to combine variables, format outputs, and prepare data for downstream nodes or end users.
## Jinja2 Templating
Template nodes use Jinja2 templating syntax to create dynamic content that adapts based on workflow data. This provides programming-like capabilities including loops, conditionals, and filters for sophisticated text generation.
### Variable Substitution
Reference workflow variables using double curly braces: `{{ variable_name }}`. You can access nested object properties and array elements using dot notation and bracket syntax.
```jinja theme={null}
{{ user.name }}
{{ items[0].title }}
{{ data.metrics.score }}
```
### Conditional Logic
Show different content based on data values using if-else statements:
```jinja theme={null}
{% if user.subscription == 'premium' %}
Welcome back, Premium Member! You have access to all features.
{% else %}
Consider upgrading to Premium for additional capabilities.
{% endif %}
```
### Loops and Iteration
Process arrays and objects with for loops to generate repetitive content:
```jinja theme={null}
{% for item in search_results %}
### Result {{ loop.index }}
**Score**: {{ item.score | round(2) }}
{{ item.content }}
---
{% endfor %}
```
## Data Formatting
### Filters
Jinja2 filters transform data during template rendering:
```jinja theme={null}
{{ name | upper }}
{{ price | round(2) }}
{{ content | replace('\n', '
') }}
{{ tags | join(', ') }}
{{ score | default('No score available') }}
```
### Error Handling
Handle missing or invalid data gracefully using default values and conditional checks:
```jinja theme={null}
{{ user.email | default('No email provided') }}
{{ metrics.accuracy | round(2) if metrics.accuracy else 'Not calculated' }}
```
## Interactive Forms
Templates can generate interactive HTML forms for structured data collection in Chatflows.
On submit, the form values are sent to the chat as the end user's next message. The format depends on the `