Below is a reference for the expected results for numerous conditional tests you can perform in your Twig templates. For a broader discussion and examples on how and when to use these conditional tests, see Testing if something exists: is defined, length, is not null, is not empty.
Twig refers to associative arrays and multi-dimensional arrays as hashes an abbreviation for hash table. The results below use the EntryModel as an example. In Craft 2, the only reliable way to test for an attribute of your object such as a custom fieldis to use array syntax: object['attribute'].
Conditionals : All true results in the table above indicate that your variable exists or has a value. The default empty and null were updated to test for a value using not empty and not null so they can be easily compared to the results testing for a variable alone or using the length filter.
Objects : Objects and arrays in Twig can typically be accessed and tested in the same way, however, currently, the most reliable way to access your object attributes is using array syntax: object['attribute']. This is due to how PHP allows objects to be defined using magic methods and how Twig tests for the existence of variables and methods on those objects.
Optimization : No testing has been done to determine which of the above tests may be the most performant. In some cases, using the length or is not empty tests may add an additional query to your page load. Testing directly for the variable or using is not null appears to not add any additional queries to your page load.
Template Error: Impossible to access a key "nonExistentAttribute" on a null variable. Associative and multi-dimensional arrays Hashes Twig refers to associative arrays and multi-dimensional arrays as hashes an abbreviation for hash table. Objects The results below use the EntryModel as an example. Notes True : Test returns True. False : Test returns False.
True : Test only returns True. False results are wrong or throw errors. True : Test will incorrectly return True in some cases when results should be False. Don't miss any Craft tips, tricks, and community updates Email. Template Error: Key does not exist as the array is empty.Master list in progress of how to get parts of fields for use in Twig templates.
NOTE: These techniques are only tested in node. You can find the machine name of fields in the Manage Fields of your content type. To only show labels: scroll down to item The default body field on a content type is essentially a Text formatted, long, with summary field type. If the body field is set to Summary or Trimmedthis will show that.
This will parse any HTML. More on the Twig raw filter. These are fields with a key and label. The key is what is stored as the value. So you might want to do this by changing the Manage Display to Label.
These will show the first item in the field. For multi-value fields you can show a different item by changing the 0 to another number. Remember start counting at 0 ; the second item would be 1. To show all items see the Multi-Value section This works very much like List, but the key works a little differently. For boolean fields, the key are either 0 not selected or 1 selected. You can combine this multi-value technique with the techniques above.
Example 1: make a ul of List field keys. Example 2: get the names of tags in a ul. Pay attention to when content and node are used above. In a node template like node--page. I love doing as much in the UI as I can, but sometimes we need to get parts of the field before they get changed by those settings.
Subscribe to RSS
Here is a silly chart to demonstrate that flow. Read the Noteworthy in Tech newsletter. Sign in. Getting Drupal 8 Field Values in Twig. Sarah Carney Follow. Body The default body field on a content type is essentially a Text formatted, long, with summary field type. List List floatList integerList text These are fields with a key and label. Boolean This works very much like List, but the key works a little differently.
The 0 represents whichever item in the list, so I can replace that and everything before it with itemand look for [' title'].
Concepts Pay attention to when content and node are used above. A user adds information to the form. This adds lots of little pieces of discrete data to where the node is stored. Then Drupal 8 and Manage Display combine that data and show it in a nice little preformatted chunk.
Drupal Answers is a question and answer site for Drupal developers and administrators. It only takes a minute to sign up. I have a list field to let the user set a background color for a part of the site. In Drupal 7 I used this code. This can be done in a few ways, you can do it all in the node template with Twig or you can create a preprocess function and create a variable for use in the node template. The key to learning what is in the array is to use Devel Kint. Without that, you won't know what is in the array.
First install Kint which comes with the Devel module for Drupal 8. Next, pick your node template but this can be done in any kind of template and examine the content variable like so ideally at the bottom of the template. From this, we get debugging info printed on the page and if you expand the array, you'll see a whole slew of information. Right away, I see my background value and I can construct a path to print this out as. I've tested this ands it works great, the div rendered the background color I had selected in my field list on node edit.
One note for above, you should probably wrap this with an if statement to check if it's empty or not. The node object is always in a node template and in the page template, when the page is displaying a node.
Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Using a field value as Twig attribute Ask Question. Asked 4 years, 1 month ago. Active 3 years, 2 months ago. Viewed 11k times. I need to set a field value as CSS class in a page template. How can I do it the Twig way?
Dynamics 365 Integration
There are a number of ways you can do this in the template file with Twig either using the new set classes code, i. As the note above says, I think we need more info. If you want a field value as a class, it would help to use Kint and Twig debug as well and you might need to set a var with a preprocess function but perhaps not necessary. I edited my question. Which template is this, page, node, field? I think I only need some twig knowledge Active Oldest Votes. Danny Englander Danny Englander 3, 2 2 gold badges 34 34 silver badges 57 57 bronze badges.
Since you asked about the page template, we can't use content. As far as I can tell with tests I ran using Devel Kint, "value" does not work. This is hard to find out with kintyou will only see a fielditemlist. In a multivalue field you can access any item by inserting a number starting at zero: node. Sign up or log in Sign up using Google.
Sign up using Facebook. Sign up using Email and Password. Post as a guest Name.Twig is a template engine for the PHP programming language. Its syntax originates from Jinja and Django templates. The initial version was created by Armin Ronacher. In this article, we'll share a collection of 10 tips and basics that every developer should know how to manipulate in Twig. Twig allow you to manipulate multiple values in variables.
You can use a dot. Note that if a property contains special characters as dots or minus : myVariable. Twig support this feature too and you can even execute inline operations with variable as concatenation and math :. Note: If you want to interpolate use always double quotes ""if you use single quotes '' the interpolation will be not used.
They are also not available when looping with a condition. Although the else tag is useful, you can check if a variable is iterable using the is iterable statement:. Sometimes, when using nested loops, you need to access the parent context. The parent context is always accessible via the loop. For instance, if you have the following template data:. If you have an existing block which is located in other file i. If you don't still get it, read the following article to understand completely how parent works.
Twig supports awesome string shortcuts for basic and frequently tasks with strings and cool functions like starts and ends with :. However, not all in the life is starts or ends with.
Sometimes there are more complex mechanisms of comparison that you'll need to implement according to your needs and you'll probably solve with Regex. However, you can prevent this behaviour easily. Twig allow you to clean unnecessary spaces between tags of 2 ways :.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Have a question about this project?
Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub? Sign in to your account. Only I am not accessing such attributes, I am simply calling a macro on the template line that triggers this. More specifically, the generated call throwing this is:. But I am still investigating on their exact cause. As for the second thing, just checked the changelog for 1.
As for the first one though, still confused. In case someone else comes across this problem, the "solution" is to reimport the macros again in the included file. Perhaps this is intended or then it isn't. Either way, props for a very confusing error message. Not to mention behavior that is not intuitive in the slightest. Per include docs, the context of the parent is inherited by the included file barring the use of only and with etc.
Looks like a duplicate of If you treat this as a duplicate ofthen there is still an issue here. The behavior and documentation do not match, regardless of whether 1. The above phrasing is implicitly the same as " So, the now deprecated 1. Ignoring the unhelpful error message here as it is both not descriptive, and is shown for the wrong file and line. Not to mention this new intended behavior reduces the utility of macros and increases boilerplate template code.
Error message were improved a while ago, and makes the documentation clearer about the expectations. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.
Sign up. New issue. Jump to bottom. Labels Macros. Copy link Quote reply. This comment has been minimized. Sign in to view. From include documentation; Included templates have access to the variables of the active context.
From import documentation: The easiest and most flexible is importing the whole module into a variable. CriseX mentioned this issue Jan 18, EasyAdminBundle v1. Tweak macro docs This PR was merged into the 1.Twig templates give you a powerful tool to create a custom experience for your users.
Twig syntax is explained in Twig documentation.
10 Twig tips and basic features that every developer should know
Configure entity binding for the page as described in Entity binding. If the page is bound to an entity, and the respective entity record is found in the CRM, that record will be available as a global currentrecord object in Twig templates.
Configure authentication for the site as described in Authentication. If the current user is an identity user, then the global user object will be available in Twig templates. The view tag allows you to fetch structured data from CRM and display it as a table. You can customize the template or write your own one and create a unique experience. Inside the template the tag exposes entityview object with a collection of fields:.
Please note that personal views must be shared with the user you use to connect WordPress to Dynamics before you start surfacing them with Twig.
The user must have read access to that view in order to surface it in WordPress. In order to use parameters attribute, you need to create a view with placeholders. When you construct a view, enter these placeholders into field values you want to filter. See the example below. Alternatively, you can specify a placeholder label in the view instead of a number, e. You can substitute lookup conditions in the view.
The result of the view query will be fetched for 30 minutes. Please refer to MSDN documentation regarding the technology. The FetchXML query is contained between the fetchxml and endfetchxml tags. Variable contacts would contain an object with the following fields:. If the name attribute is specified, the plugin will render a CRM form, and expose a form object to the inner template.
This object has the following structure:. If you need to create a new form template, please refer to it. You can design your own form, and data received from it will be sent to Dynamics the same way if you had a CRM form. You need to specify the entity name, and you must not include the name attribute. You can enforce required fields on your custom form with the required attribute.In your Twig templates, it is often good practice to test if a variable or value exists before trying to display it on your page.
There are several different tests you can use. At first glance, it can be quite confusing which is the appropriate test for your needs. As you prepare to output a variable in your template, you need to ask two questions: 1. Does the variablewhich holds the value you want to use, exist? If the variable exists, does the variable have a value for you to display?
In the next section, we will go into several ways to test for the existence of content within a variable. To test if an attribute exists within a variableuse the defined test and be sure to use array syntax for your variable :. Craft does a good job at suppressing these warnings on your live site when devMode is disabled but you have higher standards. Enable devMode to see all the warnings your code is throwing and get them corrected.
However, variables may not exist for several reasons. Becoming comfortable with when you need to test for existence will help you understand the data you are working with more intimately; write clean, DRY code; and create less problems for yourself down the road. There are more options to choose from when trying to determine if a variable has a value. We use the term value here to mean any type of content that your variable may contain.
This includes strings, numbers, arrays, objects, booleans, and null. We can combine the above tests to first check if a variable exists and then confirm the variable has a value:. How can you tell if a variable exists? To test if a variable exists, use the defined test.
How can you tell if a variable has a value? This can help you determine if a variable has a value or not. The results of length filter and empty tests are the same.How to Create a Drupal 8 Theme Using Bootstrap
Don't miss any Craft tips, tricks, and community updates Email.