You can disable interpretation of tags inside a `{% raw %}` block:

&lt;!-- language: lang-none --&gt;

    {% raw %}

    Anything in this block is treated as raw text,
    including {{ curly braces }} and
    {% other block-like syntax %}
 
    {% endraw %}

See the [*Escaping* section](http://jinja.pocoo.org/docs/templates/#escaping) of the template documentation.

I&#39;m Trying to upload image on with jquery and ajax. But weird thing happened here. In console Log its showing 

&gt; TypeError: &#39;append&#39; called on an object that does not implement
&gt; interface FormData.

Please tell me what i did wrong here? 

**JS script**

    var prosrc=$(&quot;#pro_pix img&quot;).last().attr(&quot;src&quot;);
    $(&quot;#logoform&quot;).on(&#39;change&#39;,function(event){
    var postData = new FormData(this);
    $(&quot;#pro_pix img&quot;).last().hide();
    $(&quot;#pro_pix img&quot;).first().show();
    event.preventDefault();
    $.ajax(
        {
            url : &quot;/function/pro_pic_upload.php&quot;,
            type: &quot;POST&quot;,
            data : postData,
            success:function(data, textStatus, jqXHR)
            {
            $(&quot;#pro_pix img&quot;).last().show();
            $(&quot;#pro_pix img&quot;).first().hide();
            $(&quot;#pro_pix h6&quot;).text(data);
            },
            error: function(jqXHR, textStatus, errorThrown)
            {
                //if fails     
            }
        });
    });


My HTML Markup 

     &lt;div class=&quot;row&quot;&gt;
        &lt;!-- left column --&gt;
        &lt;div id=&quot;pro_pix&quot; class=&quot;col-md-4 col-sm-6 col-xs-12&quot;&gt;
          &lt;div class=&quot;text-center&quot;&gt;
            &lt;img src=&quot;template/image/725.GIF&quot; class=&quot;avatar img-circle img-thumbnail&quot; style=&quot;display:none&quot; alt=&quot;avatar&quot;&gt;
            &lt;img src=&quot;&lt;?php echo $rowuser[&#39;profile_logo&#39;]; ?&gt;&quot; class=&quot;avatar img-circle img-thumbnail&quot; alt=&quot;avatar&quot;&gt;
            &lt;h6&gt;Upload a different photo...&lt;/h6&gt;
            &lt;form role=&quot;form&quot; id=&quot;logoform&quot; enctype=&quot;multipart/form-data&quot;&gt;
            &lt;input id=&quot;logo&quot; name=&quot;logo&quot; type=&quot;file&quot; class=&quot;text-center center-block well well-sm&quot;&gt;
            &lt;/form&gt;
          &lt;/div&gt;
        &lt;/div&gt;

&#39;append&#39; called on an object that does not implement interface FormData

I want to use Gradle **1.10** instead of **1.9.** I cannot seem to find where to change this.

If I put this:

    task wrapper(type: Wrapper) {
        gradleVersion = &#39;1.10&#39;
    }

in my `build.gradle` and rebuild, it is built with Gradle **1.9** again (so nothing actually happens).

These seem to be all the settings: (and IntelliJ&#39;s [help section about Gradle](http://www.jetbrains.com/idea/webhelp/gradle-2.html) doesn&#39;t help at all :( )
![What does &quot;not configured for the current&quot; project mean?][1]



  [1]: http://i.stack.imgur.com/RBu0O.png

How to change the version of the &#39;default gradle wrapper&#39; in IntelliJ IDEA?

I serve dynamic pages from Jinja2 templates in Flask. Now I am defining client-side templates in say, Jinja2-clone Nunjucks inside a script tag. Problem is, the client-side templates has syntax like `&lt;% %&gt;` that *Flask&#39;s* Jinja2 interpreter may interpret instead of rendering *verbatim*.

How can I make the entire block of scripts render verbatim?

Escape jinja2 syntax in a jinja2 template

I serve dynamic pages from Jinja2 templates in Flask. Now I am defining client-side templates in say, Jinja2-clone Nunjucks inside a script tag. Problem is, the client-side templates has syntax like <code>&#x3C;% %></code> that Flask's Jinja2 interpreter may interpret instead of rendering verbatim.
How can I make the entire block of scripts render verbatim?

I tried:

    list1 = [{&quot;username&quot;: &quot;abhi&quot;, &quot;pass&quot;: 2087}]
    return render_template(&quot;file_output.html&quot;, list1=list1)

In the template:

    &lt;table border=2&gt;
      &lt;tr&gt;
        &lt;td&gt;
          Key
        &lt;/td&gt;
        &lt;td&gt;
          Value
        &lt;/td&gt;
      &lt;/tr&gt;
      {% for dictionary in list1 %}
        {% for key in dictionary %}
          &lt;tr&gt;
            &lt;td&gt;
              &lt;h3&gt;{{ key }}&lt;/h3&gt;
            &lt;/td&gt;
            &lt;td&gt;
              &lt;h3&gt;{{ dictionary[key] }}&lt;/h3&gt;
            &lt;/td&gt;
          &lt;/tr&gt;
        {% endfor %}
      {% endfor %}
    &lt;/table&gt;

The above code is splitting each element into multiple characters:

    [
    
    {
    
    &quot;
    
    u
    
    s
    
    e

    r

    ...

I tested the above nested loop in a simple Python script and it works fine but not in Jinja template.


How to iterate through a list of dictionaries in Jinja template?

I am debugging a microcontroller I&#39;ve built which is writing raw HTTP requests line by line.  I am using Flask for my backend and I would like to see the entire request as it appears in this format:

    GET / HTTP/1.1
    Content-length: 123
    User-agent: blah
    ...

I know Flask is based on WSGI. Is there anyway to get this to work with Flask?

Print raw HTTP request in Flask or WSGI

I&#39;m using [Flask][1] for developing a website and while in development I run flask using the following file:

    #!/usr/bin/env python
    from datetime import datetime
    from app import app
    import config
    
    if __name__ == &#39;__main__&#39;:
        print(&#39;################### Restarting @&#39;, datetime.utcnow(), &#39;###################&#39;)
        app.run(port=4004, debug=config.DEBUG, host=&#39;0.0.0.0&#39;)


When I start the server, or when it auto-restarts because files have been updated, it always shows the print line twice:

    ################### Restarting @ 2014-08-26 10:51:49.167062 ###################
    ################### Restarting @ 2014-08-26 10:51:49.607096 ###################

Although it is not really a problem (the rest works as expected), I simply wonder why it behaves like this? Any ideas?


  [1]: http://flask.pocoo.org/

Why does running the Flask dev server run itself twice?

I am trying to make a cross origin request using jquery but it keeps being reject with the message 

&gt; XMLHttpRequest cannot load http://... No &#39;Access-Control-Allow-Origin&#39;
&gt; header is present on the requested resource. Origin ... is therefore
&gt; not allowed access.

I am using flask, heroku, and jquery 

the client code looks like this:

    $(document).ready(function() {
        $(&#39;#submit_contact&#39;).click(function(e){
            e.preventDefault();
            $.ajax({
                type: &#39;POST&#39;,
                url: &#39;http://...&#39;,
                // data: [
			    // 		{ name: &quot;name&quot;, value: $(&#39;name&#39;).val()},
			    // 		{ name: &quot;email&quot;, value: $(&#39;email&#39;).val() },
			    // 		{ name: &quot;phone&quot;, value: $(&#39;phone&#39;).val()},
			    // 		{ name: &quot;description&quot;, value: $(&#39;desc&#39;).val()}
			    //
			    // ],
			    data:&quot;name=3&amp;email=3&amp;phone=3&amp;description=3&quot;,
			    crossDomain:true,
			    success: function(msg) {
            	    alert(msg);
                }
            });
        }); 
    });

on the heroku side i am using flask and it is like this

    from flask import Flask,request
    from flask.ext.mandrill import Mandrill
    try:
        from flask.ext.cors import CORS  # The typical way to import flask-cors
    except ImportError:
        # Path hack allows examples to be run without installation.
        import os
        parentdir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
        os.sys.path.insert(0, parentdir)
    
        from flask.ext.cors import CORS
    app = Flask(__name__)
    
    app.config[&#39;MANDRILL_API_KEY&#39;] = &#39;...&#39;
    app.config[&#39;MANDRILL_DEFAULT_FROM&#39;]= &#39;...&#39;
    app.config[&#39;QOLD_SUPPORT_EMAIL&#39;]=&#39;...&#39;
    app.config[&#39;CORS_HEADERS&#39;] = &#39;Content-Type&#39;
    
    mandrill = Mandrill(app)
    cors = CORS(app)

    @app.route(&#39;/email/&#39;,methods=[&#39;POST&#39;])
    def hello_world():
        name=request.form[&#39;name&#39;]
        email=request.form[&#39;email&#39;]
        phone=request.form[&#39;phone&#39;]
        description=request.form[&#39;description&#39;]
    
        mandrill.send_email(
            from_email=email,
            from_name=name,
            to=[{&#39;email&#39;: app.config[&#39;QOLD_SUPPORT_EMAIL&#39;]}],
            text=&quot;Phone=&quot;+phone+&quot;\n\n&quot;+description
        )
    
        return &#39;200 OK&#39;
    
    if __name__ == &#39;__main__&#39;:
        app.run()



How to enable CORS in flask

I am trying to make a many to many relation here in **Flask-SQLAlchemy**, but it seems that I don&#39;t know how to fill the *&quot;many to many identifier database&quot;*. Could you please help me understand what I am doing wrong and how it is supposed to look?

&lt;!-- language: lang-python --&gt;

    class User(db.Model):
        __tablename__ = &#39;users&#39;
        user_id = db.Column(db.Integer, primary_key=True)
        user_fistName = db.Column(db.String(64))
        user_lastName = db.Column(db.String(64))
        user_email = db.Column(db.String(128), unique=True)


    class Class(db.Model):
        __tablename__ = &#39;classes&#39;
        class_id = db.Column(db.Integer, primary_key=True)
        class_name = db.Column(db.String(128), unique=True)

and then my identifier database:

    student_identifier = db.Table(&#39;student_identifier&#39;,
        db.Column(&#39;class_id&#39;, db.Integer, db.ForeignKey(&#39;classes.class_id&#39;)),
        db.Column(&#39;user_id&#39;, db.Integer, db.ForeignKey(&#39;users.user_id&#39;))
    )

so far it looks like this when I try to insert the data into the database. 


    # User
    user1 = User(
                user_fistName=&#39;John&#39;,
                user_lastName=&#39;Doe&#39;,
                user_email=&#39;john@doe.es&#39;)
    
    user2 = User(
                user_fistName=&#39;Jack&#39;,
                user_lastName=&#39;Doe&#39;,
                user_email=&#39;jack@doe.es&#39;)
    
    user3 = User(
                user_fistName=&#39;Jane&#39;,
                user_lastName=&#39;Doe&#39;,
                user_email=&#39;jane@doe.es&#39;)

    db.session.add_all([user1, user2, user3])
    db.session.commit()

    # Class
    cl1 = Class(class_name=&#39;0A&#39;)
    cl2 = Class(class_name=&#39;0B&#39;)
    cl3 = Class(class_name=&#39;0C&#39;)
    cl4 = Class(class_name=&#39;Math&#39;)
    cl5 = Class(class_name=&#39;Spanish&#39;)
    db.session.add_all([cl1, cl2, cl3, cl4, cl5])
    db.session.commit()

Now my problem is, how do I add to the many to many database, since I really can&#39;t create a &#39;student_identifier&#39; object? If I could it could perhaps have looked like this:

    # Student Identifier
    sti1  = StiClass(class_id=cl1.class_id, class_name=user1.user_id)
    sti2  = StiClass(class_id=cl3.class_id, class_name=user1.user_id)
    sti3  = StiClass(class_id=cl4.class_id, class_name=user1.user_id)
    sti4  = StiClass(class_id=cl2.class_id, class_name=user2.user_id)
    db.session.add_all([sti1, sti2, sti3, sti4])
    db.session.commit()

How I am supposed to insert into a many to many table with ORM?
    

Flask sqlalchemy many-to-many insert data

I have a method that returns data which is needed in my base template (content for a global footer).

How do either (1) pass a variable into the base template (which other templates extend) or (2) pass a variable to all templates globally without explicitly adding it in a call to `render_template`?

Flask + Jinja: Pass Data to a Base Template/All Templates

I have a python dictionary:

    settings = {
       &quot;foo&quot; : &quot;baz&quot;,
       &quot;hello&quot; : &quot;world&quot;
    }

This variable `settings` is then available in the Jinja2 template. 

I want to check if a key `myProperty` exists in the `settings` dict within my template, and if so take some action: 

    {% if settings.hasKey(myProperty) %}
       takeSomeAction();
    {% endif %}

What is the equivalent of `hasKey` that I can use?

Check if key exists in a Python dict in Jinja2 templates

I need to programatically distinguish between Jinja template files, other template files (such as ERB), and template-less plain text files.

According to [Jinja documentation]:

&gt; A Jinja template doesn’t need to have a specific extension: .html, .xml, or any other extension is just fine.

But what should I use when an explicit extension is required? `.py` is misleading, and any search including the words &quot;jinja&quot; and &quot;extension&quot; are badly searchwashed by discussion around [Jinja Extensions].

I could easily dictate a project-wide convention (`.jnj` or `.ja` come to mind) but this is for open source so I don&#39;t want to buck the trend if there&#39;s already established practice somewhere.

---
**EDIT 1:** Again, I understand that the Jinja project &amp;mdash; purposefully &amp;mdash; does not define a default file extension. I&#39;m asking if there are any unofficial conventions that have emerged for circumstances where one is desired for some project-specific reason.

---
**EDIT 2:** Clarification: This is not for HTML content.

[jinja documentation]: http://jinja.pocoo.org/docs/dev/templates/
[jinja extensions]: http://jinja.pocoo.org/docs/dev/extensions/

Is there an idiomatic file extension for Jinja templates?

I want to make a **for-loop** that goes from 0 to 10 in **Jinja**.  
 
How do I do it?   
All I know to do is the advanced for, but this does not help me now.



Content Type	Original Author	Original Content on Stackoverflow
Question	Jesvin Jose	View Question on Stackoverflow
Solution 1 - Flask	Martijn Pieters	View Answer on Stackoverflow

Escape jinja2 syntax in a jinja2 template

Flask Problem Overview

Flask Solutions

Solution 1 - Flask

How to change the version of the 'default gradle wrapper' in IntelliJ IDEA?

'append' called on an object that does not implement interface FormData

Attributions