Turns out that `+` and `-` are there for [whitespace control][1] purpose.

&gt; You can manually disable the lstrip_blocks behavior by putting a plus sign (+) at the start of a block  
&gt; [...]  
&gt; You can also strip whitespace in templates by hand. If you put an minus sign (-) to the start or end of an block (for example a for tag), a comment or variable expression you can remove the whitespaces after or before that block

  [1]: http://jinja.pocoo.org/docs/templates/#whitespace-control

Is it possible to use a navigation drawer in android but instead of updating fragments, i would like to switch between activities as my means of navigation within the app.

Navigation Drawer to switch activities instead of fragments

When I&#39;m writing code in intellij and make an errors, it highlists code with erros, when I put mouse over it, it displays detailed error message. The problem is I can&#39;t copy it. When i&#39;m moving mouse over pop-up baloon message and start selecting the message, baloon disappears. In eclipse there is a feature &#39;focus&#39; on F2 with allows you to focus it on pop-up so it becames a modal window and won&#39;t disappear when you move mouse away. is there such feature in intellij idea or is there any other way to copy error message?

**EDIT**: I just figured out that I need to:

 1. very carefully move mouse down to baloon,
 2. very carefully move mouse to the left side, but only to the left side of the text, not baloon
 3. press left mouse button, then very carefully move mouse to the right side of text, not baloon
 4. without releasing left mouse button press ctrl+c.

Come on! that&#39;s really annoying, is there a &#39;focus&#39; feature feature like F2 in Eclipse?

**EDIT2**: another way of doing this:

 1. carefully move mouse down to baloon message
 2. hold left mouse button
 3. without releasing left mouse button press ctrl and then really fast A then C

It&#39;ll make baloon message to go away, but if you&#39;re lucky enough you&#39;ll manage to select all text from baloon and copy it. With certain practice it&#39;s really faster then method #1.

Still no &quot;normal&quot; way to do this.

I found that if I compile class, I can get error messages, but they can be completely different and if my class doesn&#39;t compile, I won&#39;t get my error message at all.

how can I copy error message from intellij idea?

Found some of these in jinja files: 

    &lt;/extension&gt;
    {%- else -%}
    &lt;extension name=&quot;blabla&quot;&gt;

And also 

    {% if freeswitch_dispatcher -%}
    &lt;extension name=&quot;hold_unhold&quot;&gt;

See the dashes ?  Any idea what it&#39;s for ?

Dashes in jinja templates

Found some of these in jinja files:
<pre><code class="hljs language-bash">&#x3C;/extension>
{%- else -%}
&#x3C;extension name="blabla">
</code></pre>
And also
<pre><code class="hljs language-ini">{% if freeswitch_dispatcher -%}
&#x3C;extension name="hold_unhold">
</code></pre>
See the dashes ? Any idea what it's for ?

How to make a variable in jijna2 default to &quot;&quot; if object is None instead of doing something like this?

          {% if p %}   
			{{ p.User[&#39;first_name&#39;]}}
          {% else %}
			NONE
		  {%endif %}

So if object p is None I want to default the values of p (first_name and last_name) to &quot;&quot;.
Basically 

    nvl(p.User[first_name&#39;], &quot;&quot;)


Error receiving:

    Error:  jinja2.exceptions.UndefinedError
        UndefinedError: &#39;None&#39; has no attribute &#39;User&#39;

Jinja2 template variable if None Object set a default value

I have two files:

**base.html**

    &lt;!DOCTYPE html&gt;
    &lt;html&gt;
        &lt;head&gt;
           &lt;meta charset=&quot;UTF-8&quot;&gt;
           &lt;title&gt;{{title}}&lt;/title&gt;
        &lt;/head&gt;
        &lt;body&gt;
           {% block content %}
           {% endblock %}   
        &lt;/body&gt;
    &lt;/html&gt;

**register.html**

    {% extends &quot;base.html&quot; %}
    {% block content %}
    &lt;h1&gt;Register&lt;/h1&gt;
    &lt;form action=&quot;&quot; method=&quot;post&quot; name=&quot;register&quot;&gt;
        {{ form.hidden_tag() }}
        {{ form.login.label }} {{ form.login(size=20) }}
        {{ form.password.label }} {{ form.password(size=20) }}
        &lt;input type=&quot;submit&quot; value=&quot;Register&quot;&gt;
    &lt;/form&gt;
    {% endblock %}

It gets rendered like this:

    &lt;!DOCTYPE html&gt;
    &lt;html&gt;
        &lt;head&gt;
           &lt;meta charset=&quot;UTF-8&quot;&gt;
           &lt;title&gt;Register&lt;/title&gt;
        &lt;/head&gt;
        &lt;body&gt;
           
    &lt;h1&gt;Register&lt;/h1&gt;
    &lt;form action=&quot;&quot; method=&quot;post&quot; name=&quot;register&quot;&gt;
        &lt;div style=&quot;display:none;&quot;&gt;&lt;input id=&quot;csrf_token&quot; name=&quot;csrf_token&quot; type=&quot;hidden&quot; value=&quot;1393257771.168161##ce877b3519f192c05d3b409f3b7b07bb147dead7&quot;&gt;&lt;/div&gt;
        &lt;label for=&quot;login&quot;&gt;login&lt;/label&gt; &lt;input id=&quot;login&quot; name=&quot;login&quot; size=&quot;20&quot; type=&quot;text&quot; value=&quot;&quot;&gt;
        &lt;label for=&quot;password&quot;&gt;password&lt;/label&gt; &lt;input id=&quot;password&quot; name=&quot;password&quot; size=&quot;20&quot; type=&quot;password&quot; value=&quot;&quot;&gt;
        &lt;input type=&quot;submit&quot; value=&quot;Register&quot;&gt;
    &lt;/form&gt;
       
        &lt;/body&gt;
    &lt;/html&gt;

I would like to achieve this:

    &lt;!DOCTYPE html&gt;
    &lt;html&gt;
        &lt;head&gt;
           &lt;meta charset=&quot;UTF-8&quot;&gt;
           &lt;title&gt;Register&lt;/title&gt;
        &lt;/head&gt;
        &lt;body&gt;
            &lt;h1&gt;Register&lt;/h1&gt;
            &lt;form action=&quot;&quot; method=&quot;post&quot; name=&quot;register&quot;&gt;
                &lt;div style=&quot;display:none;&quot;&gt;&lt;input id=&quot;csrf_token&quot; name=&quot;csrf_token&quot; type=&quot;hidden&quot; value=&quot;1393257771.168161##ce877b3519f192c05d3b409f3b7b07bb147dead7&quot;&gt;&lt;/div&gt;
                &lt;label for=&quot;login&quot;&gt;login&lt;/label&gt; &lt;input id=&quot;login&quot; name=&quot;login&quot; size=&quot;20&quot; type=&quot;text&quot; value=&quot;&quot;&gt;
                &lt;label for=&quot;password&quot;&gt;password&lt;/label&gt; &lt;input id=&quot;password&quot; name=&quot;password&quot; size=&quot;20&quot; type=&quot;password&quot; value=&quot;&quot;&gt;
                &lt;input type=&quot;submit&quot; value=&quot;Register&quot;&gt;
            &lt;/form&gt;
        &lt;/body&gt;
    &lt;/html&gt;

Am I missing something? I tried Google and messing with the template indentations, also `indent` filter does not seem to apply here. I do not want to hard-code the indentation in the inner block, as that would break if I decide to change the formatting and elements in the base later.

Jinja2 correctly indent included block

I am trying to set the text color using css in a jinja2 template.  In the following code  I want to set the output string to print in a specific font color if the variable contains a string.  Everytime the template is generated though it prints in red due to the else statement, it never see the first two conditions even though the output should be matched, I can tell what the output from the variable is when the table generates and it is as expected.  I know my css is correct due to the printing of the string in red by default.

My first thought was to enclose the string I was checking for in quotes but that didn&#39;t work.  Next was that jinja was not expanding `RepoOutput[RepoName.index(repo)]` but the for loop above it works, `RepoName` is expanded upon properly.  I know if I add the braces it will print the variable which I am fairly certain will either break the template or just not work.

I tried looking at these sites and went through the list of global expressions as well but couldn&#39;t find any examples similar to mine or a direction in which to look further.

http://jinja.pocoo.org/docs/templates/#if

http://wsgiarea.pocoo.org/jinja/docs/conditions.html

   
       {% for repo in RepoName %}
           &lt;tr&gt;
              &lt;td&gt; &lt;a href=&quot;http://mongit201.be.monster.com/icinga/{{ repo }}&quot;&gt;{{ repo }}&lt;/a&gt; &lt;/td&gt;
           {% if error in RepoOutput[RepoName.index(repo)] %}
              &lt;td id=error&gt; {{ RepoOutput[RepoName.index(repo)] }} &lt;/td&gt; &lt;!-- I want this in green if it is up-to-date, otherwise I want it in red --&gt;
           {% elif Already in RepoOutput[RepoName.index(repo)] %}
              &lt;td id=good&gt; {{ RepoOutput[RepoName.index(repo)] }} &lt;/td&gt;   &lt;!-- I want this in green if it is up-to-date, otherwise I want it in red --&gt;
           {% else %}
                &lt;td id=error&gt; {{ RepoOutput[RepoName.index(repo)] }} &lt;/td&gt; &lt;!-- I want this in green if it is up-to-date, otherwise I want it in red --&gt;
           &lt;/tr&gt;

           {% endif %}
       {% endfor %}

Thanks

Jinja2 template not rendering if-elif-else statement properly

I am trying to use an `if` to determine which block should fill my `{% block content %}`.

I have a `base.html` which has a default `{% block content %}` and this template is extending `base.html`. So I tried this:

    {% extends &quot;base.html&quot; %}
    {% if condition == True %}
        {% block content %}
        &lt;div&gt;blah blah blah blah&lt;/div&gt;
        {% endblock content %}
    {% endif %}

and I was expecting to see `blah blah blah blah` if condition was true and see the default block if it wasn&#39;t true.

But both times I got `blah blah blah blah`.

Then I tried this one:

    {% extends &quot;base.html&quot; %}
    {% if condition == True %}
        {% block content %}
        &lt;div&gt;blah blah blah blah&lt;/div&gt;
        {% endblock content %}
    {% else %}
        {% block content %}
        &lt;div&gt;The Default Thing&lt;/div&gt;
        {% endblock content %}
    {% endif %}

and I got this error:

    TemplateAssertionError: block &#39;content&#39; defined twice

How can I put a block inside an `if` statement?

jinja2 - how to put a block in an if statement?

I am using Flask micro-framework for my server which uses Jinja templates.

I have a parent `template.html` and some children templates called `child1.html` and `child2.html`, some of these children templates are pretty large HTML files and I would like to somehow split them for better lucidity over my work.

Contents of my `main.py` script:

    from flask import Flask, request, render_template
    
    app = Flask(__name__)
    
    @app.route(&#39;/&#39;)
    @app.route(&#39;/&lt;task&gt;&#39;)
    def home(task=&#39;&#39;):
      return render_template(&#39;child1.html&#39;, task=task)

    app.run()

The simplified `template.html`:

    &lt;!DOCTYPE html&gt;
    &lt;html&gt;
      &lt;head&gt;&lt;/head&gt;
      &lt;body&gt;
        &lt;div class=&quot;container&quot;&gt;
          {% block content %}{% endblock %}
        &lt;/div&gt;
      &lt;/body&gt;
    &lt;/html&gt;

The magic is in `child1.html`:

    {% extends &#39;template.html&#39; %}
    {% block content %}
      {% if task == &#39;content1&#39; %}
        &lt;!-- include content1.html --&gt;
      {% endif %}
      {% if task == &#39;content2&#39; %}
        &lt;!-- include content2.html --&gt;
      {% endif %}
    {% endblock %}
    
Instead of the comments:

    &lt;!-- include content1.html --&gt;

I have a lot of html text, and it is very hard to keep track of changes and not to make some mistakes, which are then pretty hard to find and correct.

I&#39;d like to just load the `content1.html` instead of writing it all in `child1.html`.

I came across [this question](https://stackoverflow.com/questions/8988855/include-another-html-file-in-a-html-file), but I had problems implementing it.

I think Jinja2 might have a better tool for that.

**NOTE:** The code above might not be working properly, I just wrote it to illustrate the problem.

Content Type	Original Author	Original Content on Stackoverflow
Question	Anto	View Question on Stackoverflow
Solution 1 - Jinja2	Anto	View Answer on Stackoverflow

Dashes in jinja templates

Jinja2 Problem Overview

Jinja2 Solutions

Solution 1 - Jinja2

how can I copy error message from intellij idea?

Navigation Drawer to switch activities instead of fragments

Attributions