Twig & Doctrine Archives - Belchamber Web Tools, AI Guidance & Code

Rendering Twig templates from Symfony Repository without Using Dependency Injection (DIC)

Aaron Belchamber — Thu, 04 Jul 2019 17:25:09 +0000

Sometimes it’s useful to access Twig templates from a Symfony repository, one could argue that this goes against a repository’s role, but if you think of Twig template files or Twig strings perhaps grabbed from a database as data, then this coincides nicely with the function of a repo. These arguments aside, whatever your situation, […]

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Symfony Twig: Accessing global values reference

Aaron Belchamber — Sun, 06 Dec 2015 16:43:00 +0000

Here is a reference list to access global values within Twig: For $_POST variables use this : {{ app.request.parameter.get("page") }} For $_GET variables use this : {{ app.request.query.get("page") }} For $_COOKIE variables use this : {{ app.request.cookies.get("page") }} For $_SESSION variables use this : {{ app.request.session.get("page") }} For more Symfony Twig shortcuts, view the Twig […]

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Accessing Symfony global and server variables in Twig views through the “app” variable

Aaron Belchamber — Wed, 10 Jun 2015 11:31:55 +0000

In Symfony, you don’t always have to actually pass values from your controllers to your Twig views. Twig can actually pull global and server values directly through the super global “app” variable. Most frequently, you can access these corresponding objects like Kernel, Request, Security and Session variables like so: {{app.kernel.cachedir}} {{app.kernel.logdir}} {{app.kernel.rootdir}} {{app.request.basepath}} {{app.request.baseurl}} {{app.request.uri}} […]

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How to show or access cookie values in Symfony Twig views

Aaron Belchamber — Thu, 02 Apr 2015 15:09:39 +0000

Strange how obscure it is to find a clear example of how to just access or show the value of a cookie in Twig, so here it is! {{ app.request.cookies.get('yourCookieHere') }} Twig is the templating engine that powers Symfony views. Symfony is the PHP framework from Sensio Labs. If you are a company that uses […]

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Example of basic looping through array values in Symfony Twig

Aaron Belchamber — Sat, 03 Jan 2015 13:31:08 +0000

Cycle through an array of values for current year and 5 years into the future: {% set start_yr = date() | date('Y') %} {% set end_yr = start_yr + 5 %} {% for yr in start_yr..end_yr %} {{ cycle(['odd', 'even'], loop.index0) }} {% endfor %} The array “colors” would probably be better off defined in […]

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Cookie basics for Symfony, Sensio Labs PHP framework

Aaron Belchamber — Fri, 19 Sep 2014 05:13:16 +0000

In Symfony, here is how you “get cookies”: $response->headers->getCookies(); Don’t forget to include the class path: use Symfony\Component\HttpFoundation\Cookie; Setting cookie values in Symfony is pretty straight forward, the thing to know is that since Symfony processes so much in its front controllers you can set cookies deeper into your code than other methods where headers […]

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Symfony Doctrine’s version of MySQL’s “IN” — as in “values contained in”

Aaron Belchamber — Fri, 05 Sep 2014 03:01:36 +0000

MySQL’s “IN” query filter is very useful. Basically, if you have a list of record ID numbers, you can query them all neatly like so: $query="SELECT field_name,field_name FROM table_name WHERE id IN (3,7,11,13,17)" The containing comma-delimited list is a simple and neat query that can be assembled in your code quickly. Duplicating MySQL’s “IN( )” […]

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Symfony and Doctrine’s version of MySQL’s “SELECT FOR UPDATE” queries

Aaron Belchamber — Sun, 24 Aug 2014 15:31:33 +0000

Sometimes, you may find yourself needing to select a value or record from a database and hold that record so you can update it without any other process intervening. There are a lot of instances you may need to “lock” the record to a process to ensure no other process can “claim” it as well. […]

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Creating a credit card month/year form field input in Symfony 2.5

Aaron Belchamber — Fri, 22 Aug 2014 02:30:43 +0000

Creating a credit card month/year input can be accomplished with a single database field but Symfony is smart enough to create multiple pull downs for each. It is NOT smart enough to not require the programmer to exclude the “day” value. So, what do you do? There are many workarounds, including using some post rendering […]

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Symfony2 Twig: Conditionally display form errors in Twig views

Aaron Belchamber — Wed, 02 Jul 2014 12:50:43 +0000

This will only show form errors if there are any in your form view. {% if form_errors(form)!='' %} {{ form_errors(form) }} {% endif %}

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