Twig call function

congratulate, very good idea suggest..

Twig call function

Twig Filters & Functions

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I have a function in my controller that returns array of entities so in my twig template I do this to iterate over elements:. It's possible access to the PHP function from Twig template in order to get all the possible combinations of elements in entity? What you can do is write a Twig extension. A common structure is, writing a service with some utility functions, write a Twig extension as bridge to access the service from twig.

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The Twig extension will use the service and your controller can use the service too. While I agree with the comments about passing in variables from your controller you can also register undefined functions when setting up the twig environment.

This is from the Twig recipe page. Symfony docs. If you really know what you do and you don't mind the evil ways, this is the only additional Twig extension you'll ever need:. Learn more. Asked 6 years, 7 months ago.

[Part 2] - Twig Extensions - Create a Twig Extension Function to Keep DRY

Active 1 year, 7 months ago. Viewed 95k times. Reynier Reynier 2, 9 9 gold badges 42 42 silver badges 81 81 bronze badges. ManuelGutierrez I try but don't know how to, any ideas on this? Active Oldest Votes. Its not possible to access any PHP function inside Twig directly. See official extension repository. Abhinav bhardwaj Abhinav bhardwaj 1, 16 16 silver badges 18 18 bronze badges. Thank you, this was very helpful for me!

I am surprised the code answer is not posted already, it's a one liner.Although Twig already provides an extensive list of filters, functions, and tagsGrav also provides a selection of useful additions to make the process of theming easier. Twig filters are applied to Twig variables by using the character followed by the filter name. Parameters can be passed in just like Twig functions using parenthesis. PHP 7 is getting more strict type checks, which means that passing a value of wrong type may now throw an exception.

To avoid this, you should use filters which ensure that the value passed to a method is valid:. Sometimes you want to check if some variable is defined, and if it's not, provide a default value.

For example:. Takes a needle and a haystack and determines if the haystack ends with the needle. Also now works with an array of needles and will return true if any haystack ends with the needle. Removes trailing spaces at the beginning of a string. Take an arbitrary string containing markdown and convert it to HTML using the markdown parser of Grav. It operates on a number by passing in a numeric divider and an optional array of items to select from.

Pads a string to a certain length with another character. Randomizes the list provided. If a value is provided as a parameter, it will skip those values and keep them in order. Removes trailing spaces at the end of a string. The safe email filter converts an email address into ASCII characters to make it harder for email spam bots to recognize and capture. You might not notice a difference at first, but examining the page source not using the Browser Developer Tools, the actual page source will reveal the underlying characters encoding.

Takes a needle and a haystack and determines if the haystack starts with the needle. Also now works with an array of needles and will return true if any haystack starts with the needle. This assumes you have these language strings translated in your site and have enabled multi-language support.Twig is a quick, optimized template engine for PHP.

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It is designed from the ground up to make creating templates easier on both the developer and the designer. Its easy-to-follow syntax and straightforward processes make it a natural fit for anyone familiar with Smarty, Django, Jinja, Liquid, or Stencil.

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We use it for our Grav templates in part because of its flexibility and inherent security. The fact that it is also one of the fastest template engines for PHP out there made choosing it for use in Grav a no brainer. Twig compiles templates down to plain PHP. This cuts the amount of PHP overhead down to a minimum, resulting in a faster, more streamlined user experience. It is also a very flexible engine thanks to its lexer and parser.

This enables the developer to create their own custom tags and filters. It also enables it to create its own domain-specific language DSL. When it comes to security, Twig doesn't cut any corners. It gives the developer a sandbox mode that enables them to examine any untrusted code. This gives you the ability to use Twig as a template language for applications while giving users the ability to modify the template design. Basically, it is a powerful engine that gives you control over the user interface.

When combined with YAML for configuration, it makes for a powerful and simple system for any developer or site manager to work with. Twig works by taking all the hocus pocus out of template design. Templates are basically just text files that contain variables or expressions that are replaced by values as the template is evaluated. Tags are also an important part of a template file, as these control the logic of the template itself.

In this example, we set the title of the site up as you would with any standard Web page. The difference is that we were able to use simple Twig syntax to present the author's name and create a dynamic list of types of items. A template is first loaded, then passed through the lexer where its source code is tokenized and broken up into small pieces.

twig call function

At this point, the parser takes the tokens and turns them into the abstract syntax tree. Once this is done, the compiler turns this into PHP code that can then be evaluated and displayed to the user. Twig can also be extended to add additional tags, filters, tests, operators, global variables, and functions.

More information about extending Twig can be found in its official documentation. A Twig template has several key components that help it to understand what it is you would like to do. These include tags, filters, functions, and variables. Let's take a closer look at these important tools and how they can help you build an incredible template.

Tags tell Twig what it needs to do.Macros are the Twig version of functions. Just like you would write a function in PHP to do something and return something, you can use a Twig macro to generate some output.

Macros are used for generating often used markup that might vary slightly each time. You put your skeleton markup in the macro and use parameters passed in to alter that markup and then output it.

The first thing we need to do is define the data that we want to pass in to the macro. The hash contains the information about each social network that we want to include in the list. Each network has a name and a URL. We set the hash to the variable networks.

It takes two parameters; the first one is a hash of the networks we want to include, and the second one is the class name for the ul element.

The class name is optional, and we add a conditional to only output a class name if one is passed in.

Drupal 8 create Twig function (no audio)

We use a for -loop to iterate over the hash passed in to the macro and then output a li element with the social network information for each social network. In case we want to add additional styling or an icon, we populate the li elements with a class of the network name.

We are taking the network name and passing it to the lower filter to make the name lowercase another option would be to use the key name instead of lowercasing the network name.

So the links are clickable, the link to the social network is populated using the URL that is in the hash. To wrap up, we close the for -loop and then close our ul element and, finally, close our macro tag.

This will call the socialList macro, passing in the networks hash, and the class name of three-share. To centralize our macros, we can put them in their own template and import it.

And now not only do we have a macro that will generate a list of social networks for us, we also have it abstracted out into its own macros template so we can use it in any of our templates.

twig call function

Get Immediate Access. Courses Lessons About Support Blog. The Mijingo Blog Latest news, updates, free tutorials, and more from Mijingo.Towards the end of the previous video we had a basic working implementation that allowed us to add a CSS class error if we had one or more validation errors for the current form field.

In this video we will look at a way to customise the CSS class to be either error by default, or some other custom value if we prefer. Throwing custom CSS into the mix bumps up the amount of cases we need to cover.

We now want to augment the attr variable to have one of the following values:. Twig allows us to do this with Twig Extensions. Heads up: We're using Symfony 3.

This means with the default autoconfiguration setting, we don't need to do any service configuration here. If you're not using Symfony 3. This function tells Symfony what custom Twig functions we want to make available inside our Twig templates. Notice this function is getFunctions. If we were creating a custom Twig filter we would need getFilters.

If creating a custom Twig test we'd need getTestsand so on. This means this one FormFieldErrorExtension file can contain multiple custom functions. Here we only define one, but we still need to return an array. Note here if we were using a filter then we would use different syntax, e.

What this means is we can update the data-custom-error-css-class inside WidgetType to allow us to pass through custom CSS on a per field basis:. Add this in any template, refresh the page, and your web debug toolbar will contain the output of all available variables. Remember to remove any extraneous dump statements before deploying, as its use will cause a error in production app. Once you know you can dump out all the variables, you can start figuring out interesting ways to achieve your goals.

How can I create a Maintenance Page in Symfony?Calls the callback given by the first parameter and passes the remaining parameters as arguments.

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Version Description 5. Edit Report a Bug. Parameters callback The callable to be called. Zero or more parameters to be passed to the callback. Warning: Parameter 1 to increment expected to be a reference, value given in … 0 1.

Return Values Returns the return value of the callback. Changelog Version Description 5. You wanted a mushroom haircut, no problem You wanted a shave haircut, no problem. My results are below: Variable functions took 0. Regards, -- Greg.

Twig Extensions Defined by Symfony

I don't know of many processes that would actually suffer from this kind of overhead. Iterations: Averaged over: 10 PHP 5. If you're distributing code, you will often come across users who will rename functions and break the code.

With this class, you can dynamicly add and remove classes by calling register or unregister. Register will store the object in an associative array by calling toString as defined by ProductPlugin and saving the method under the returned string in the array.

In this case the name of the method the class adds. I restricted the user provided argument to 1, because I want to force the user to use associative arrays.

Because I chose an array to store my classes, removing a function is quite simple. However the unregister function isn't optimal, I better pass a string instead of a plugin object.

twig call function

I didn't test it yet on performance. You don't need to use this function to call a variable class function.Twig Extensions allow to create custom functions, filters and more to use them in your Twig templates.

Suppose you want to create a new filter called price that formats a number into money:. Create a class that extends AbstractExtension and fill in the logic:. If you want to create a function instead of a filter, define the getFunctions method:.

Along with custom filters and functions, you can also register global variables. Next, register your class as a service and tag it with twig. If you're using the default services. Symfony will automatically know about your new service and add the tag.

Unlocking the Mystery of Custom Twig Functions

You can now start using your filter in any Twig template. Optionally, execute this command to confirm that your new filter was successfully registered:. New in version 1. However, Twig must initialize all extensions before rendering any template, even if the template doesn't use an extension.

If extensions don't define dependencies i. However, if extensions define lots of complex dependencies e. That's why Twig allows to decouple the extension definition from its implementation. Following the same example as before, the first change would be to remove the formatPrice method from the extension and update the PHP callable defined in getFilters :.

Then, create the new AppRuntime class it's not required but these classes are suffixed with Runtime by convention and include the logic of the previous formatPrice method:.

Otherwise, create a service for this class and tag your service with twig. Disneyland Paris Dec. Lille France February 28 Paris France TBA.

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Tip Along with custom filters and functions, you can also register global variables. Optionally, execute this command to confirm that your new filter was successfully registered: 1 2 3 4 5.


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