I have an issue where I have a StrictBlock within a StreamField:
class DetailsTableBlock(StructBlock):
title = CharBlock(required=False)
description = RichTextBlock(required=False)
table = TableBlock(template="home/blocks/table.html")
class MainStreamBlock(StreamBlock):
....
table = DetailsTableBlock()
The problem occurs when I try to render the table using:
{{ child.value.table }}
all I get is:
{u'data': [[u'test', u'test', u'test'], [u'123', u'asd', u'asd'], [u'123', u'asd', u'asd']], u'first_row_is_table_header': True, u'first_col_is_header': False}
So the question is how can I render html using a StructBlock inside a StreamField? I am using Wagtail 1.7
You should use: {{ child.value.bound_blocks.table }}
The full explanation is given at wagtail documentation, but in short: when you're looping over the content of a StreamField to output it, you'll sometimes get the raw data value, and sometimes get a BoundBlock object which knows both the value and how to render it as HTML. When you access the child values of a StructBlock, you get the raw values (since this is usually the more useful thing to access inside a StructBlock template) - to get the BoundBlock object, you need to read it from the StructBlock's bound_blocks dictionary instead.
Related
I'm reading the react JS documentation and came across this:
Specifying Attributes with JSX:
You may use quotes to specify string literals as attributes:
const element = <div tabIndex="0"></div>;
I'm fairly comfortable with javascript but I'm not quite sure what the documentation means by "attributes". I know about object properties but this looks like a simple variable.
What exactly is a react js attribute if it is different from a property?
html elements have both attributes and properties
there are a few different scenarios for how they relate to each other. There doesn't necessarily have to be both an attribute or property for each value set on an element.
1. attributes
attributes can be set in html
<a id="mylink" href=""/>
where href is an attribute
or attributes can be set by using the set attribute method of an element
document.getElementById("mylink").setAttribute("href", "")
and read using
document.getElementById("mylink").getAttribute("href")
2. properties
properties can be set and read by retrieving the element as well
document.getElementById("mylink").href = ""
where href is a property
when they are set the first way, you are setting the attribute, the second sets the property.
Usually the underlying element attribute and property are
automatically synchronized, sometimes they are not.
Sometimes there is no matching attribute or property,
only one or the other exists.
Attributes and properties are part of native html elements, which React provides additional support and abstractions around.
Custom React components (such as <MyComponent prop=""/> or <MyComponent prop={someVar}/>), which you create yourself, accept props using the same syntax. The word props in this context refers purely to React props. React custom component props are just plain javascript values passed into your component. These custom components don't get added to the page. They are used to organize and render actual html elements.
When mounting a native component inside of a custom component (such as <div id=""/> or <div id={someVar}/>), the React library sets the underlying html attribute on the native browser element.
So there are two things to keep in mind here
html element attributes verse html element properties.
custom element props are neither of those, but setting a prop on a JSX
native element such as a div, set's the generated element's
attribute.
Now that's been established, the documentation above is saying: if you want to set an attribute value to a string you can use that specific syntax. That syntax only works for setting attribute values to strings.
You can use either:
<div id="myid"/>
or
<div id={'myid'} />
to set a string attribute value. They're probably just pointing out the syntax differences.
if you do:
<div tabIndex="0"/>
the value of tabIndex is the string 0 not the number zero
verses this:
<div tabIndex={0} />
which will pass the number zero to the tabindex attribute of the underlying html element
To me if we pass any parameter in function component then what we diclare in html is properties.But if you use (className/style/etc...) directecly in html then it will be attributes.
Working on a pre existing React JS project and the className attribute does not render in the DOM what is defined.
For example - here is what code looks like in the project:
<div className={styles.intro_inner}></div>
Here is the output in the DOM:
I'm expecting the class name "intro_inner" to appear within the DOM.
Within JSX, the syntax attribute={variable} on a component means that the attribute will be set with the value of the given variable, not it's name. I would assume that your code has an object named styles which has an attribute named intro_inner whose value is some random mash of characters that you see output in the inspector.
If you want the class to be set as "intro_inner" then you need to set it as a string, not a variable. The syntax for that would be className="intro_inner".
I have this element on my html page:
<div class="section-title" id="bladeSectionTitle"
ng-transclude="title">
</div>
I want to get the value displayed.
I have tried the following in my typescript page & only get null:
var title = document.getElementById("bladeSectionTitle").getAttribute('section-title');
The view source gives me this:
<dpn-blade-section is-checkbox-visible="true" is-checked="$component.showAll">
<section-title>
<h4>Show All</h4>
</section-title>
In this instance, the value I would be looking for is 'Show All'.
Which version of angular are you running? We really need more information here. Although accessing the DOM directly isn't the way to go with angular, you're looking at something like this
var title = document.querySelector('dpn-blade-section section-title h4').innerHTML;
I've managed to build a page that will display data from the database dynamically. However, this code which is saved in the database:
<p>This is the content for the radio page.</p>
Displays like this:
<p>This is the content for the radio page.</p>
The HTML tags aren't rendered. I understand that Symfony (for security purposes) renders any HTML code like this for security reasons. I want Symfony (obviously) to render these HTML tags. How can I achieve this just for this purpose only, so that Symfony still sanitises any HTML tag that is saved to the database elsewhere on the site?
For your information as well, this is the code that I am using to pull the data from the database:
public function mainpageAction($slug)
{
$content = $this->getDoctrine()
->getRepository('SiteMainBundle:Content')
->find($slug);
if (!$content) {
throw $this->createNotFoundException('No product found for slug '.$slug);
}
return $this->render('SiteMainBundle:Default:page.html.twig', array('content' => $content, 'slug' => $slug));
}
Also, just so I can learn more about Symfony, is the rendering of the HTML tags just the sole job of PHP or could it be rendered properly using Twig?
Many thanks!
If you want to do that, you need to use the raw filter in the twig template. Like described in the twig documentation, the raw filter marks the value as safe which means that in an environment with automatic escaping enabled this variable will not be escaped if raw is the last filter applied to it.
In your case, it's : {{ content | raw }}
In my "models.py" I have the following:
class Contact(models.Model):
type = models.IntegerField('Contact Type', choices=core.constants.CONTACT_TYPE_CHOICES)
In the HTML template, as per normal, I use the following to retrieve the "human-readable" value returned from a normal QuerySet:
{{ contact.get_type_display }}
However, when I make use of the "ValuesQuerySet" as described here:
http://docs.djangoproject.com/en/1.3/ref/models/querysets/#values
then the _"Model.get_FOO_display()"_ method does not work anymore.
Any ideas?
If you're using values() to retrieve a subset of all possible fields, you could try using only() instead since it works nicely with get_FOO_display()
Django documentation for only()